---
OA_place: publisher
OA_type: hybrid
_id: '21839'
abstract:
- lang: eng
  text: "Background & Aims: To develop and validate a CT-based radiomics model to
    assess HVPG and predict a composite endpoint of liver-related events (LRE: decompensation
    and liver-related death) in patients with cirrhosis.\r\n\r\nMethods: This retrospective
    study included 357 cirrhosis patients, who received invasive HVPG measurements,
    120 liver-healthy controls (training cohort) and 85 and 100 cirrhosis patients
    (internal and external validation cohorts, respectively), and contrast-enhanced
    abdominal CTs. After volumetric segmentation of the liver and spleen on CT, Bayesian
    parameter optimization was used for selection of extracted features and hyperparameter
    tuning in random forest or elastic net models. Prediction accuracy was evaluated
    using Pearson correlation coefficients of predicted (’radio-HVPG’) and invasive
    HVPG. Discrimination between relevant HVPG cut-offs was determined by receiver
    operating characteristic (ROC) analysis. The predictive value of radio-HVPG and
    invasive-HVPG for LRE was compared using Cox regression models.\r\n\r\nResults:
    Radio-HVPG, predicted by an optimized random forest model based on 74 selected
    CT features, correlated with invasive-HVPG and detected clinically significant
    portal hypertension (CSPH: HVPG ≥ 10 mmHg) on the internal (Pearson r = 0.63,
    AUC 0.89 [95% CI: 0.81–0.96]) and external (Pearson r = 0.62, AUC 0.80 [95% CI:
    0.64–0.91]) validation cohorts. Radio-HVPG predicted LRE when adjusting for MELD
    and albumin (adjusted HR: 1.14 [95% CI: 1.04–1.25], p = 0.005) and performed similarly
    to invasive-HVPG.\r\n\r\nConclusions: Radiomic features accurately predict HVPG
    in patients with cirrhosis and allow risk stratification for LRE in a radiomics-clinical
    signature."
acknowledgement: "The computational results presented were partly obtained using the
  CLIP cluster (https://clip.science/). The authors thank Clemens Watzenboeck from
  the Medical University of Vienna for the assistance in code upload and repository
  maintenance. The authors dedicate this work to the memory of Martin Watzenboeck,
  who served as first author and whose vision and scientific rigor were fundamental
  to the conception and completion of this study. Open Access funding provided by
  Medizinische Universitat Wien/KEMÖ. This work was supported by the Vienna Science
  and Technology Fund (WWTF) through projects VRG15-005 and NXT 19-008 granted to
  J.M and the Clinical Research Group MOTION, Medical University of Vienna, Vienna,
  Austria – a Clinical Research Group Programme project funded by the Ludwig Boltzmann
  Gesellschaft (Grant Nr LBG_KFG_22_32) with funds from the Fonds Zukunft Österreich.\r\n\r\nP-E.R.'s
  research laboratory is supported by the Fondation pour la Recherche Médicale (FRM
  EQU202303016287), “Institut National de la Santé et de la Recherche Médicale” (ATIP
  AVENIR), the “Agence Nationale de la Recherche” (ANR-18-CE14-0006-01, RHU QUID-NASH,
  ANR-18-IDEX-0001, ANR-22-CE14-0002) by « Émergence, Ville de Paris », by Fondation
  ARC, by the European Union's Horizon 2020 research and innovation programme under
  grant agreement No 847949 and by France 2030 RHU LIVER-TRACK."
article_number: e70633
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Celine
  full_name: Sin, Celine
  last_name: Sin
- first_name: Martin Luther
  full_name: Watzenboeck, Martin Luther
  last_name: Watzenboeck
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Lorenz
  full_name: Balcar, Lorenz
  last_name: Balcar
- first_name: Georg
  full_name: Semmler, Georg
  last_name: Semmler
- first_name: Bernhard
  full_name: Scheiner, Bernhard
  last_name: Scheiner
- first_name: Katharina
  full_name: Lampichler, Katharina
  last_name: Lampichler
- first_name: Mattias
  full_name: Mandorfer, Mattias
  last_name: Mandorfer
- first_name: Lucile
  full_name: Moga, Lucile
  last_name: Moga
- first_name: Pierre‐Emmanuel
  full_name: Rautou, Pierre‐Emmanuel
  last_name: Rautou
- first_name: Maxime
  full_name: Ronot, Maxime
  last_name: Ronot
- first_name: Jörg
  full_name: Menche, Jörg
  last_name: Menche
- first_name: Thomas
  full_name: Reiberger, Thomas
  last_name: Reiberger
- first_name: Martina
  full_name: Scharitzer, Martina
  last_name: Scharitzer
citation:
  ama: Sin C, Watzenboeck ML, Iofinova EB, et al. Radiomics‐based assessment of portal
    hypertension severity and risk stratification of cirrhotic patients using routine
    CT scans. <i>Liver International</i>. 2026;46(5). doi:<a href="https://doi.org/10.1111/liv.70633">10.1111/liv.70633</a>
  apa: Sin, C., Watzenboeck, M. L., Iofinova, E. B., Balcar, L., Semmler, G., Scheiner,
    B., … Scharitzer, M. (2026). Radiomics‐based assessment of portal hypertension
    severity and risk stratification of cirrhotic patients using routine CT scans.
    <i>Liver International</i>. Wiley. <a href="https://doi.org/10.1111/liv.70633">https://doi.org/10.1111/liv.70633</a>
  chicago: Sin, Celine, Martin Luther Watzenboeck, Eugenia B Iofinova, Lorenz Balcar,
    Georg Semmler, Bernhard Scheiner, Katharina Lampichler, et al. “Radiomics‐based
    Assessment of Portal Hypertension Severity and Risk Stratification of Cirrhotic
    Patients Using Routine CT Scans.” <i>Liver International</i>. Wiley, 2026. <a
    href="https://doi.org/10.1111/liv.70633">https://doi.org/10.1111/liv.70633</a>.
  ieee: C. Sin <i>et al.</i>, “Radiomics‐based assessment of portal hypertension severity
    and risk stratification of cirrhotic patients using routine CT scans,” <i>Liver
    International</i>, vol. 46, no. 5. Wiley, 2026.
  ista: Sin C, Watzenboeck ML, Iofinova EB, Balcar L, Semmler G, Scheiner B, Lampichler
    K, Mandorfer M, Moga L, Rautou P, Ronot M, Menche J, Reiberger T, Scharitzer M.
    2026. Radiomics‐based assessment of portal hypertension severity and risk stratification
    of cirrhotic patients using routine CT scans. Liver International. 46(5), e70633.
  mla: Sin, Celine, et al. “Radiomics‐based Assessment of Portal Hypertension Severity
    and Risk Stratification of Cirrhotic Patients Using Routine CT Scans.” <i>Liver
    International</i>, vol. 46, no. 5, e70633, Wiley, 2026, doi:<a href="https://doi.org/10.1111/liv.70633">10.1111/liv.70633</a>.
  short: C. Sin, M.L. Watzenboeck, E.B. Iofinova, L. Balcar, G. Semmler, B. Scheiner,
    K. Lampichler, M. Mandorfer, L. Moga, P. Rautou, M. Ronot, J. Menche, T. Reiberger,
    M. Scharitzer, Liver International 46 (2026).
date_created: 2026-05-07T08:51:47Z
date_published: 2026-05-01T00:00:00Z
date_updated: 2026-05-18T07:20:20Z
day: '01'
ddc:
- '570'
doi: 10.1111/liv.70633
external_id:
  pmid:
  - '41943460'
file:
- access_level: open_access
  checksum: fafcc0b88b8e8caed85849627305d9ba
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  creator: dernst
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  relation: main_file
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has_accepted_license: '1'
intvolume: '        46'
issue: '5'
keyword:
- computed tomography
- liver
- portal hypertension
- radiomics
- spleen
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '05'
oa: 1
oa_version: Published Version
pmid: 1
publication: Liver International
publication_identifier:
  eissn:
  - 1478-3231
  issn:
  - 1478-3223
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Radiomics‐based assessment of portal hypertension severity and risk stratification
  of cirrhotic patients using routine CT scans
tmp:
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  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 46
year: '2026'
...
---
OA_place: publisher
_id: '21854'
abstract:
- lang: eng
  text: "As neural-network-based models grow both in size and popularity, interest
    has grown in making the models smaller and more efficient to train. To that end,
    many methods have been proposed to prune models by reducing their number of nonzero
    parameters. Additionally, parameter-efficient fine-tuning, in which a much smaller
    number of parameters than the total contained in the model is updated during training,
    has become very popular, especially in the space of Large Language Models. At
    the same time, the increasingly routine deployment of machine learning in real-world
    applications has spurred a drive to make them more trustworthy - in the sense
    of, among other things, being unbiased, interpretable, and editable. In this thesis,
    we examine the interplay between efficiency and trustworthiness.\r\n\r\nFirst,
    we analyze the effects of model pruning on bias in computer vision models, demonstrating
    that increased sparsity leads to greater bias, largely as a function of increased
    model uncertainty in marginal cases. Based on this observation, we propose several
    bias mitigation techniques. Then, we demonstrate that example-specific model pruning
    can improve model interpretation methods while improving pruning efficiency to
    make example-specific model pruning feasible in real time. Then, we investigate
    the effectiveness of parameter-efficient and data-efficient model personalization
    via fine-tuning, demonstrating that it is highly feasible with very small computational
    and data resources. Finally, we consider efficiency in editing model knowledge
    using a custom synthetic data framework, demonstrating that parameter-efficient,
    low-rank fine-tuning frequently outperforms full-rank fine-tuning, and, additionally,
    that restricting which model blocks are fine-tuned frequently improves results.
    Together, the results in this thesis provide new insights and techniques for combining
    trustworthiness and efficiency during neural network inference and training.\r\n\r\n-----------------“In
    reference to IEEE copyrighted material which is used with permission in this thesis,
    the IEEE does not endorse any of [name of university or educational entity]’s
    products or services. Internal or personal use of this material is permitted.
    If interested in reprinting/republishing IEEE copyrighted material for advertising
    or promotional purposes or for creating new collective works for resale or redistribution,
    please go to http://www.ieee.org/publications_standards/publications/rights/rights_link.html
    to learn how to obtain a License from RightsLink. If applicable, University Microfilms
    and/or ProQuest Library, or the Archives of Canada may supply single copies of
    the dissertation.”"
acknowledged_ssus:
- _id: ScienComp
acknowledgement: "The research in this Ph.D. was funded in whole\r\nor in part by
  the Austrian Science Fund (FWF) W1260-N35 (Vienna Graduate School for\r\nComputational
  Optimization). For open access purposes the author has applied a CC BY\r\npublic
  copyright license to any author accepted manuscript version arising from this submission\r\nwherever
  possible. Additionally, I am grateful to Alois Schlögl, Waleed Khalid, and the rest
  of\r\nthe ISTA Scientific Computing team for building and maintaining the infrastructure
  I used\r\nto run experiments. I’m also deeply grateful to the Alistarh group’s administrative
  assistant,\r\nChristine Francois, who always deals with our nonsense with common
  sense and a smile.\r\n"
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
citation:
  ama: Iofinova EB. On the utility and effects of efficiency in artificial neural
    networks. 2026. doi:<a href="https://doi.org/10.15479/AT-ISTA-21854">10.15479/AT-ISTA-21854</a>
  apa: Iofinova, E. B. (2026). <i>On the utility and effects of efficiency in artificial
    neural networks</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-21854">https://doi.org/10.15479/AT-ISTA-21854</a>
  chicago: Iofinova, Eugenia B. “On the Utility and Effects of Efficiency in Artificial
    Neural Networks.” Institute of Science and Technology Austria, 2026. <a href="https://doi.org/10.15479/AT-ISTA-21854">https://doi.org/10.15479/AT-ISTA-21854</a>.
  ieee: E. B. Iofinova, “On the utility and effects of efficiency in artificial neural
    networks,” Institute of Science and Technology Austria, 2026.
  ista: Iofinova EB. 2026. On the utility and effects of efficiency in artificial
    neural networks. Institute of Science and Technology Austria.
  mla: Iofinova, Eugenia B. <i>On the Utility and Effects of Efficiency in Artificial
    Neural Networks</i>. Institute of Science and Technology Austria, 2026, doi:<a
    href="https://doi.org/10.15479/AT-ISTA-21854">10.15479/AT-ISTA-21854</a>.
  short: E.B. Iofinova, On the Utility and Effects of Efficiency in Artificial Neural
    Networks, Institute of Science and Technology Austria, 2026.
corr_author: '1'
date_created: 2026-05-11T08:43:22Z
date_published: 2026-05-11T00:00:00Z
date_updated: 2026-05-19T11:20:28Z
day: '11'
ddc:
- '000'
degree_awarded: PhD
department:
- _id: GradSch
- _id: DaAl
doi: 10.15479/AT-ISTA-21854
file:
- access_level: closed
  checksum: 2e148dad920e3f9b7c32796e0ba2e5f7
  content_type: application/zip
  creator: eiofinov
  date_created: 2026-05-11T08:36:01Z
  date_updated: 2026-05-11T08:36:01Z
  file_id: '21856'
  file_name: EIofinova_thesis_FinalVersion.zip
  file_size: 28479571
  relation: source_file
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  checksum: b10c2933f386f532b2dbf28b19c5525c
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  creator: eiofinov
  date_created: 2026-05-13T13:10:48Z
  date_updated: 2026-05-13T13:10:48Z
  file_id: '21877'
  file_name: 2026_Iofinova_Eugenia_Thesis.pdf
  file_size: 18137757
  relation: main_file
  success: 1
file_date_updated: 2026-05-13T13:10:48Z
has_accepted_license: '1'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '237'
project:
- _id: 9B9290DE-BA93-11EA-9121-9846C619BF3A
  grant_number: W1260-N35
  name: Vienna Graduate School on Computational Optimization
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '14771'
    relation: part_of_dissertation
    status: public
  - id: '18121'
    relation: part_of_dissertation
    status: public
  - id: '21858'
    relation: part_of_dissertation
    status: public
  - id: '21859'
    relation: part_of_dissertation
    status: public
  - id: '21857'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
title: On the utility and effects of efficiency in artificial neural networks
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2026'
...
---
OA_place: publisher
OA_type: green
_id: '21857'
abstract:
- lang: eng
  text: "The availability of powerful open-source large language models (LLMs) opens
    exciting use cases, such as using personal data to fine-tune these models to imitate
    a user’s unique writing style. Two key requirements for this functionality are
    personalization–in the sense that the output should recognizably reflect the user’s
    own writing style—and privacy–users may justifiably be wary of uploading extremely
    personal data, such as their email archive, to a third-party service. In this
    paper, we demonstrate the feasibility of training and running such an assistant,
    which we call Panza, on commodity hardware, for the specific use case of email
    generation. Panza’s personalization features are based on a combination of parameter-efficient
    fine-tuning using a variant of the Reverse Instructions technique [1] and Retrieval-Augmented
    Generation (RAG) [2]. We demonstrate that this combination allows us to fine-tune
    an LLM to reflect a user’s writing style using limited data, while executing on
    extremely limited resources, e.g. on a free Google Colab instance. Our key methodological
    contribution is the first detailed study of evaluation metrics for this task,
    and\r\nof how different choices of system components–the use of RAG and of different
    fine-tuning approaches–impact the system’s performance. Additionally, we demonstrate
    that very little data - under 100 email samples - are sufficient to create models
    that convincingly imitate humans, showcasing a previously unknown attack vector
    in language models. We are releasing the full Panza code as well as three new
    email datasets licensed for research use."
article_number: '81'
article_processing_charge: No
author:
- first_name: Armand
  full_name: Nicolicioiu, Armand
  last_name: Nicolicioiu
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Andrej
  full_name: Jovanovic, Andrej
  last_name: Jovanovic
- first_name: Eldar
  full_name: Kurtic, Eldar
  id: 47beb3a5-07b5-11eb-9b87-b108ec578218
  last_name: Kurtic
- first_name: Mahdi
  full_name: Nikdan, Mahdi
  id: 66374281-f394-11eb-9cf6-869147deecc0
  last_name: Nikdan
- first_name: Andrei
  full_name: Panferov, Andrei
  id: 2c18daae-4dbe-11ef-8491-98ce2d960f09
  last_name: Panferov
- first_name: Ilia
  full_name: Markov, Ilia
  id: D0CF4148-C985-11E9-8066-0BDEE5697425
  last_name: Markov
- first_name: Nir
  full_name: Shavit, Nir
  last_name: Shavit
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
citation:
  ama: 'Nicolicioiu A, Iofinova EB, Jovanovic A, et al. <i>Panza: Investigating the
    Feasibility of Fully-Local Personalized Text Generation</i>. OpenReview; 2026.'
  apa: 'Nicolicioiu, A., Iofinova, E. B., Jovanovic, A., Kurtic, E., Nikdan, M., Panferov,
    A., … Alistarh, D.-A. (2026). <i>Panza: Investigating the feasibility of fully-local
    personalized text generation</i>. <i>Third Conference on Parsimony and Learning
    (Proceedings Track)</i>. Tübíngen, Germany: OpenReview.'
  chicago: 'Nicolicioiu, Armand, Eugenia B Iofinova, Andrej Jovanovic, Eldar Kurtic,
    Mahdi Nikdan, Andrei Panferov, Ilia Markov, Nir Shavit, and Dan-Adrian Alistarh.
    <i>Panza: Investigating the Feasibility of Fully-Local Personalized Text Generation</i>.
    <i>Third Conference on Parsimony and Learning (Proceedings Track)</i>. OpenReview,
    2026.'
  ieee: 'A. Nicolicioiu <i>et al.</i>, <i>Panza: Investigating the feasibility of
    fully-local personalized text generation</i>. OpenReview, 2026.'
  ista: 'Nicolicioiu A, Iofinova EB, Jovanovic A, Kurtic E, Nikdan M, Panferov A,
    Markov I, Shavit N, Alistarh D-A. 2026. Panza: Investigating the feasibility of
    fully-local personalized text generation, OpenReview,p.'
  mla: 'Nicolicioiu, Armand, et al. “Panza: Investigating the Feasibility of Fully-Local
    Personalized Text Generation.” <i>Third Conference on Parsimony and Learning (Proceedings
    Track)</i>, 81, OpenReview, 2026.'
  short: 'A. Nicolicioiu, E.B. Iofinova, A. Jovanovic, E. Kurtic, M. Nikdan, A. Panferov,
    I. Markov, N. Shavit, D.-A. Alistarh, Panza: Investigating the Feasibility of
    Fully-Local Personalized Text Generation, OpenReview, 2026.'
conference:
  end_date: 2026-03-26
  location: Tübíngen, Germany
  name: 'CPAL: Conference on Parsimony and Learning'
  start_date: 2026-03-23
corr_author: '1'
date_created: 2026-05-11T08:50:28Z
date_published: 2026-03-06T00:00:00Z
date_updated: 2026-05-19T11:20:27Z
day: '06'
department:
- _id: GradSch
- _id: DaAl
keyword:
- LLMs
- PEFT
- LoRA
- personalization
- efficient ML
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
main_file_link:
- open_access: '1'
  url: https://openreview.net/pdf?id=soFWnTqd23
month: '03'
oa: 1
oa_version: Accepted Version
publication: Third Conference on Parsimony and Learning (Proceedings Track)
publication_status: published
publisher: OpenReview
quality_controlled: '1'
related_material:
  record:
  - id: '21854'
    relation: dissertation_contains
    status: public
status: public
title: 'Panza: Investigating the feasibility of fully-local personalized text generation'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference_poster
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '21859'
abstract:
- lang: eng
  text: As artificial neural networks, and specifically large language models, have
    improved rapidly in capabilities and quality, they have increasingly been deployed
    in real-world applications, from customer service to Google search, despite the
    fact that they frequently make factually incorrect or undesirable statements.
    This trend has inspired practical and academic interest in model editing, that
    is, in adjusting the weights of the model to modify its likely outputs for queries
    relating to a specific fact or set of facts. This may be done either to amend
    a fact or set of facts, for instance, to fix a frequent error in the training
    data, or to suppress a fact or set of facts entirely, for instance, in case of
    dangerous knowledge. Multiple methods have been proposed to do such edits. However,
    at the same time, it has been shown that such model editing can be brittle and
    incomplete. Moreover the effectiveness of any model editing method necessarily
    depends on the data on which the model is trained, and, therefore, a good understanding
    of the interaction of the training data distribution and the way it is stored
    in the network is necessary and helpful to reliably perform model editing. However,
    working with large language models trained on real-world data does not allow us
    to understand this relationship or fully measure the effects of model editing.
    We therefore propose Behemoth, a fully synthetic data generation framework. To
    demonstrate the practical insights from the framework, we explore model editing
    in the context of simple tabular data, demonstrating surprising findings that,
    in some cases, echo real-world results, for instance, that in some cases restricting
    the update rank results in a more effective update.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: "EI thanks Weiwei Yang, Janardhan Kulkani, and Kate Lytvynets for
  their advice and support in\r\ndeveloping an earlier version of the Behemoth library.
  This research was supported by the Scientific\r\nService Units (SSU) of IST Austria
  through resources provided by Scientific Computing (SciComp).\r\nEI was supported
  in part by the FWF DK VGSCO, grant agreement number W1260-N35.\r\n"
article_processing_charge: No
arxiv: 1
author:
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
citation:
  ama: 'Iofinova EB, Alistarh D-A. Behemoth: Benchmarking unlearning in LLMs using
    fully synthetic data. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/arXiv.2601.23153">10.48550/arXiv.2601.23153</a>'
  apa: 'Iofinova, E. B., &#38; Alistarh, D.-A. (n.d.). Behemoth: Benchmarking unlearning
    in LLMs using fully synthetic data. <i>arXiv</i>. <a href="https://doi.org/10.48550/arXiv.2601.23153">https://doi.org/10.48550/arXiv.2601.23153</a>'
  chicago: 'Iofinova, Eugenia B, and Dan-Adrian Alistarh. “Behemoth: Benchmarking
    Unlearning in LLMs Using Fully Synthetic Data.” <i>ArXiv</i>, n.d. <a href="https://doi.org/10.48550/arXiv.2601.23153">https://doi.org/10.48550/arXiv.2601.23153</a>.'
  ieee: 'E. B. Iofinova and D.-A. Alistarh, “Behemoth: Benchmarking unlearning in
    LLMs using fully synthetic data,” <i>arXiv</i>. .'
  ista: 'Iofinova EB, Alistarh D-A. Behemoth: Benchmarking unlearning in LLMs using
    fully synthetic data. arXiv, <a href="https://doi.org/10.48550/arXiv.2601.23153">10.48550/arXiv.2601.23153</a>.'
  mla: 'Iofinova, Eugenia B., and Dan-Adrian Alistarh. “Behemoth: Benchmarking Unlearning
    in LLMs Using Fully Synthetic Data.” <i>ArXiv</i>, doi:<a href="https://doi.org/10.48550/arXiv.2601.23153">10.48550/arXiv.2601.23153</a>.'
  short: E.B. Iofinova, D.-A. Alistarh, ArXiv (n.d.).
corr_author: '1'
date_created: 2026-05-11T08:58:07Z
date_published: 2026-01-30T00:00:00Z
date_updated: 2026-05-19T11:20:27Z
day: '30'
department:
- _id: GradSch
- _id: DaAl
doi: 10.48550/arXiv.2601.23153
external_id:
  arxiv:
  - '2601.23153'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2601.23153
month: '01'
oa: 1
oa_version: Preprint
project:
- _id: 9B9290DE-BA93-11EA-9121-9846C619BF3A
  grant_number: W1260-N35
  name: Vienna Graduate School on Computational Optimization
publication: arXiv
publication_status: draft
related_material:
  record:
  - id: '21854'
    relation: dissertation_contains
    status: public
status: public
title: 'Behemoth: Benchmarking unlearning in LLMs using fully synthetic data'
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '21858'
abstract:
- lang: eng
  text: "The recent surge in high-quality open-source Generative AI text models (colloquially:
    LLMs), as well as efficient finetuning techniques, have opened the possibility
    of creating high-quality personalized models that generate text attuned to a specific
    individual’s needs and are capable of credibly imitating their writing style by
    refining an open-source model with that person’s own data. The technology to create
    such models is accessible to private individuals, and training and running such
    models can be done cheaply on consumer-grade hardware. While these advancements
    are a huge gain for usability and privacy, this position paper argues that the
    practical feasibility of impersonating specific individuals also introduces novel
    safety risks. For instance, this technology enables the creation of phishing emails\r\nor
    fraudulent social media accounts, based on small amounts of publicly available
    text, or by the individuals themselves to escape AI text detection. We further
    argue that these risks are complementary to—and distinct from—the much-discussed
    risks of other impersonation attacks such as image, voice, or video deepfakes,
    and are not adequately addressed by the larger research community, or the current
    generation of open- and closed-source models."
acknowledgement: "This research was supported by the Scientific Service Units (SSU)
  of IST Austria through resources\r\nprovided by Scientific Computing (SciComp).
  EI was supported in part by the FWF DK VGSCO,\r\ngrant agreement number W1260-N35.
  AJ was supported in part by ERC Proof-of-Concept Grant\r\nFastML, grant agreement
  101158077."
article_processing_charge: No
arxiv: 1
author:
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Andrej
  full_name: Jovanovic, Andrej
  last_name: Jovanovic
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
citation:
  ama: 'Iofinova EB, Jovanovic A, Alistarh D-A. Position: It’s time to act on the
    risk of efficient personalized text generation. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/arXiv.2502.06560">10.48550/arXiv.2502.06560</a>'
  apa: 'Iofinova, E. B., Jovanovic, A., &#38; Alistarh, D.-A. (n.d.). Position: It’s
    time to act on the risk of efficient personalized text generation. <i>arXiv</i>.
    <a href="https://doi.org/10.48550/arXiv.2502.06560">https://doi.org/10.48550/arXiv.2502.06560</a>'
  chicago: 'Iofinova, Eugenia B, Andrej Jovanovic, and Dan-Adrian Alistarh. “Position:
    It’s Time to Act on the Risk of Efficient Personalized Text Generation.” <i>ArXiv</i>,
    n.d. <a href="https://doi.org/10.48550/arXiv.2502.06560">https://doi.org/10.48550/arXiv.2502.06560</a>.'
  ieee: 'E. B. Iofinova, A. Jovanovic, and D.-A. Alistarh, “Position: It’s time to
    act on the risk of efficient personalized text generation,” <i>arXiv</i>. .'
  ista: 'Iofinova EB, Jovanovic A, Alistarh D-A. Position: It’s time to act on the
    risk of efficient personalized text generation. arXiv, <a href="https://doi.org/10.48550/arXiv.2502.06560">10.48550/arXiv.2502.06560</a>.'
  mla: 'Iofinova, Eugenia B., et al. “Position: It’s Time to Act on the Risk of Efficient
    Personalized Text Generation.” <i>ArXiv</i>, doi:<a href="https://doi.org/10.48550/arXiv.2502.06560">10.48550/arXiv.2502.06560</a>.'
  short: E.B. Iofinova, A. Jovanovic, D.-A. Alistarh, ArXiv (n.d.).
corr_author: '1'
date_created: 2026-05-11T08:55:23Z
date_published: 2025-06-02T00:00:00Z
date_updated: 2026-05-19T11:20:27Z
day: '02'
department:
- _id: GradSch
- _id: DaAl
doi: 10.48550/arXiv.2502.06560
external_id:
  arxiv:
  - '2502.06560'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2502.06560
month: '06'
oa: 1
oa_version: Preprint
project:
- _id: 8e35c14b-16d5-11f0-9cad-a3fc35339161
  grant_number: '101158077'
  name: 'FastML: Efficient and Cost-Effective Distributed Machine Learning'
- _id: 9B9290DE-BA93-11EA-9121-9846C619BF3A
  grant_number: W1260-N35
  name: Vienna Graduate School on Computational Optimization
publication: arXiv
publication_status: draft
related_material:
  record:
  - id: '21854'
    relation: dissertation_contains
    status: public
status: public
title: 'Position: It''s time to act on the risk of efficient personalized text generation'
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2025'
...
---
_id: '18121'
abstract:
- lang: eng
  text: It is known that sparsity can improve interpretability for deep neural networks.
    However, existing methods in the area either require networks that are pre-trained
    with sparsity constraints, or impose sparsity after the fact, altering the network’s
    general behavior. In this paper, we demonstrate, for the first time, that sparsity
    can instead be incorporated into the interpretation process itself, as a sample-specific
    preprocessing step. Unlike previous work, this approach, which we call SPADE,
    does not place constraints on the trained model and does not affect its behavior
    during inference on the sample. Given a trained model and a target sample, SPADE
    uses sample-targeted pruning to provide a "trace" of the network’s execution on
    the sample, reducing the network to the most important connections prior to computing
    an interpretation. We demonstrate that preprocessing with SPADE significantly
    increases the accuracy of image saliency maps across several interpretability
    methods. Additionally, SPADE improves the usefulness of neuron visualizations,
    aiding humans in reasoning about network behavior. Our code is available at https://github.com/IST-DASLab/SPADE.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: The authors would like to thank Stephen Casper and Tony Wang for
  their feedback on this work, and Eldar Kurtic for his advice on aspects of the project.
  This research was supported by the Scientific Service Units (SSU) of IST Austria
  through resources provided by Scientific Computing (SciComp). EI was supported in
  part by the FWF DK VGSCO, grant agreement number W1260-N35.
alternative_title:
- PMLR
article_processing_charge: No
arxiv: 1
author:
- first_name: Arshia Soltani
  full_name: Moakhar, Arshia Soltani
  last_name: Moakhar
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Elias
  full_name: Frantar, Elias
  id: 09a8f98d-ec99-11ea-ae11-c063a7b7fe5f
  last_name: Frantar
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
citation:
  ama: 'Moakhar AS, Iofinova EB, Frantar E, Alistarh D-A. SPADE: Sparsity-guided debugging
    for deep neural networks. In: <i>Proceedings of the 41st International Conference
    on Machine Learning</i>. Vol 235. ML Research Press; 2024:45955-45987.'
  apa: 'Moakhar, A. S., Iofinova, E. B., Frantar, E., &#38; Alistarh, D.-A. (2024).
    SPADE: Sparsity-guided debugging for deep neural networks. In <i>Proceedings of
    the 41st International Conference on Machine Learning</i> (Vol. 235, pp. 45955–45987).
    Vienna, Austria: ML Research Press.'
  chicago: 'Moakhar, Arshia Soltani, Eugenia B Iofinova, Elias Frantar, and Dan-Adrian
    Alistarh. “SPADE: Sparsity-Guided Debugging for Deep Neural Networks.” In <i>Proceedings
    of the 41st International Conference on Machine Learning</i>, 235:45955–87. ML
    Research Press, 2024.'
  ieee: 'A. S. Moakhar, E. B. Iofinova, E. Frantar, and D.-A. Alistarh, “SPADE: Sparsity-guided
    debugging for deep neural networks,” in <i>Proceedings of the 41st International
    Conference on Machine Learning</i>, Vienna, Austria, 2024, vol. 235, pp. 45955–45987.'
  ista: 'Moakhar AS, Iofinova EB, Frantar E, Alistarh D-A. 2024. SPADE: Sparsity-guided
    debugging for deep neural networks. Proceedings of the 41st International Conference
    on Machine Learning. ICML: International Conference on Machine Learning, PMLR,
    vol. 235, 45955–45987.'
  mla: 'Moakhar, Arshia Soltani, et al. “SPADE: Sparsity-Guided Debugging for Deep
    Neural Networks.” <i>Proceedings of the 41st International Conference on Machine
    Learning</i>, vol. 235, ML Research Press, 2024, pp. 45955–87.'
  short: A.S. Moakhar, E.B. Iofinova, E. Frantar, D.-A. Alistarh, in:, Proceedings
    of the 41st International Conference on Machine Learning, ML Research Press, 2024,
    pp. 45955–45987.
conference:
  end_date: 2024-07-27
  location: Vienna, Austria
  name: 'ICML: International Conference on Machine Learning'
  start_date: 2024-07-21
corr_author: '1'
date_created: 2024-09-22T22:01:46Z
date_published: 2024-09-01T00:00:00Z
date_updated: 2026-05-19T11:20:27Z
day: '01'
department:
- _id: DaAl
external_id:
  arxiv:
  - '2310.04519'
intvolume: '       235'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2310.04519
month: '09'
oa: 1
oa_version: Preprint
page: 45955-45987
project:
- _id: 9B9290DE-BA93-11EA-9121-9846C619BF3A
  grant_number: W1260-N35
  name: Vienna Graduate School on Computational Optimization
publication: Proceedings of the 41st International Conference on Machine Learning
publication_identifier:
  eissn:
  - 2640-3498
publication_status: published
publisher: ML Research Press
quality_controlled: '1'
related_material:
  link:
  - relation: software
    url: https://github.com/IST-DASLab/SPADE
  record:
  - id: '21854'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: 'SPADE: Sparsity-guided debugging for deep neural networks'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 235
year: '2024'
...
---
_id: '14460'
abstract:
- lang: eng
  text: We provide an efficient implementation of the backpropagation algorithm, specialized
    to the case where the weights of the neural network being trained are sparse.
    Our algorithm is general, as it applies to arbitrary (unstructured) sparsity and
    common layer types (e.g., convolutional or linear). We provide a fast vectorized
    implementation on commodity CPUs, and show that it can yield speedups in end-to-end
    runtime experiments, both in transfer learning using already-sparsified networks,
    and in training sparse networks from scratch. Thus, our results provide the first
    support for sparse training on commodity hardware.
acknowledgement: 'We would like to thank Elias Frantar for his valuable assistance
  and support at the outset of this project, and the anonymous ICML and SNN reviewers
  for very constructive feedback. EI was supported in part by the FWF DK VGSCO, grant
  agreement number W1260-N35. DA acknowledges generous ERC support, via Starting Grant
  805223 ScaleML. '
alternative_title:
- PMLR
article_processing_charge: No
arxiv: 1
author:
- first_name: Mahdi
  full_name: Nikdan, Mahdi
  id: 66374281-f394-11eb-9cf6-869147deecc0
  last_name: Nikdan
- first_name: Tommaso
  full_name: Pegolotti, Tommaso
  last_name: Pegolotti
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Eldar
  full_name: Kurtic, Eldar
  id: 47beb3a5-07b5-11eb-9b87-b108ec578218
  last_name: Kurtic
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
citation:
  ama: 'Nikdan M, Pegolotti T, Iofinova EB, Kurtic E, Alistarh D-A. SparseProp: Efficient
    sparse backpropagation for faster training of neural networks at the edge. In:
    <i>Proceedings of the 40th International Conference on Machine Learning</i>. Vol
    202. ML Research Press; 2023:26215-26227.'
  apa: 'Nikdan, M., Pegolotti, T., Iofinova, E. B., Kurtic, E., &#38; Alistarh, D.-A.
    (2023). SparseProp: Efficient sparse backpropagation for faster training of neural
    networks at the edge. In <i>Proceedings of the 40th International Conference on
    Machine Learning</i> (Vol. 202, pp. 26215–26227). Honolulu, Hawaii, HI, United
    States: ML Research Press.'
  chicago: 'Nikdan, Mahdi, Tommaso Pegolotti, Eugenia B Iofinova, Eldar Kurtic, and
    Dan-Adrian Alistarh. “SparseProp: Efficient Sparse Backpropagation for Faster
    Training of Neural Networks at the Edge.” In <i>Proceedings of the 40th International
    Conference on Machine Learning</i>, 202:26215–27. ML Research Press, 2023.'
  ieee: 'M. Nikdan, T. Pegolotti, E. B. Iofinova, E. Kurtic, and D.-A. Alistarh, “SparseProp:
    Efficient sparse backpropagation for faster training of neural networks at the
    edge,” in <i>Proceedings of the 40th International Conference on Machine Learning</i>,
    Honolulu, Hawaii, HI, United States, 2023, vol. 202, pp. 26215–26227.'
  ista: 'Nikdan M, Pegolotti T, Iofinova EB, Kurtic E, Alistarh D-A. 2023. SparseProp:
    Efficient sparse backpropagation for faster training of neural networks at the
    edge. Proceedings of the 40th International Conference on Machine Learning. ICML:
    International Conference on Machine Learning, PMLR, vol. 202, 26215–26227.'
  mla: 'Nikdan, Mahdi, et al. “SparseProp: Efficient Sparse Backpropagation for Faster
    Training of Neural Networks at the Edge.” <i>Proceedings of the 40th International
    Conference on Machine Learning</i>, vol. 202, ML Research Press, 2023, pp. 26215–27.'
  short: M. Nikdan, T. Pegolotti, E.B. Iofinova, E. Kurtic, D.-A. Alistarh, in:, Proceedings
    of the 40th International Conference on Machine Learning, ML Research Press, 2023,
    pp. 26215–26227.
conference:
  end_date: 2023-07-29
  location: Honolulu, Hawaii, HI, United States
  name: 'ICML: International Conference on Machine Learning'
  start_date: 2023-07-23
corr_author: '1'
date_created: 2023-10-29T23:01:17Z
date_published: 2023-07-30T00:00:00Z
date_updated: 2025-04-14T07:49:12Z
day: '30'
department:
- _id: DaAl
ec_funded: 1
external_id:
  arxiv:
  - '2302.04852'
intvolume: '       202'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2302.04852
month: '07'
oa: 1
oa_version: Preprint
page: 26215-26227
project:
- _id: 268A44D6-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '805223'
  name: Elastic Coordination for Scalable Machine Learning
publication: Proceedings of the 40th International Conference on Machine Learning
publication_identifier:
  eissn:
  - 2640-3498
publication_status: published
publisher: ML Research Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'SparseProp: Efficient sparse backpropagation for faster training of neural
  networks at the edge'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 202
year: '2023'
...
---
_id: '14771'
abstract:
- lang: eng
  text: Pruning—that is, setting a significant subset of the parameters of a neural
    network to zero—is one of the most popular methods of model compression. Yet,
    several recent works have raised the issue that pruning may induce or exacerbate
    bias in the output of the compressed model. Despite existing evidence for this
    phenomenon, the relationship between neural network pruning and induced bias is
    not well-understood. In this work, we systematically investigate and characterize
    this phenomenon in Convolutional Neural Networks for computer vision. First, we
    show that it is in fact possible to obtain highly-sparse models, e.g. with less
    than 10% remaining weights, which do not decrease in accuracy nor substantially
    increase in bias when compared to dense models. At the same time, we also find
    that, at higher sparsities, pruned models exhibit higher uncertainty in their
    outputs, as well as increased correlations, which we directly link to increased
    bias. We propose easy-to-use criteria which, based only on the uncompressed model,
    establish whether bias will increase with pruning, and identify the samples most
    susceptible to biased predictions post-compression. Our code can be found at https://github.com/IST-DASLab/pruned-vision-model-bias.
acknowledgement: The authors would like to sincerely thank Sara Hooker for her feedback
  during the development of this work. EI was supported in part by the FWF DK VGSCO,
  grant agreement number W1260-N35. AP and DA acknowledge generous ERC support, via
  Starting Grant 805223 ScaleML.
article_processing_charge: No
arxiv: 1
author:
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Elena-Alexandra
  full_name: Peste, Elena-Alexandra
  id: 32D78294-F248-11E8-B48F-1D18A9856A87
  last_name: Peste
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
citation:
  ama: 'Iofinova EB, Krumes A, Alistarh D-A. Bias in pruned vision models: In-depth
    analysis and countermeasures. In: <i>2023 IEEE/CVF Conference on Computer Vision
    and Pattern Recognition</i>. IEEE; 2023:24364-24373. doi:<a href="https://doi.org/10.1109/cvpr52729.2023.02334">10.1109/cvpr52729.2023.02334</a>'
  apa: 'Iofinova, E. B., Krumes, A., &#38; Alistarh, D.-A. (2023). Bias in pruned
    vision models: In-depth analysis and countermeasures. In <i>2023 IEEE/CVF Conference
    on Computer Vision and Pattern Recognition</i> (pp. 24364–24373). Vancouver, BC,
    Canada: IEEE. <a href="https://doi.org/10.1109/cvpr52729.2023.02334">https://doi.org/10.1109/cvpr52729.2023.02334</a>'
  chicago: 'Iofinova, Eugenia B, Alexandra Krumes, and Dan-Adrian Alistarh. “Bias
    in Pruned Vision Models: In-Depth Analysis and Countermeasures.” In <i>2023 IEEE/CVF
    Conference on Computer Vision and Pattern Recognition</i>, 24364–73. IEEE, 2023.
    <a href="https://doi.org/10.1109/cvpr52729.2023.02334">https://doi.org/10.1109/cvpr52729.2023.02334</a>.'
  ieee: 'E. B. Iofinova, A. Krumes, and D.-A. Alistarh, “Bias in pruned vision models:
    In-depth analysis and countermeasures,” in <i>2023 IEEE/CVF Conference on Computer
    Vision and Pattern Recognition</i>, Vancouver, BC, Canada, 2023, pp. 24364–24373.'
  ista: 'Iofinova EB, Krumes A, Alistarh D-A. 2023. Bias in pruned vision models:
    In-depth analysis and countermeasures. 2023 IEEE/CVF Conference on Computer Vision
    and Pattern Recognition. CVPR: Conference on Computer Vision and Pattern Recognition,
    24364–24373.'
  mla: 'Iofinova, Eugenia B., et al. “Bias in Pruned Vision Models: In-Depth Analysis
    and Countermeasures.” <i>2023 IEEE/CVF Conference on Computer Vision and Pattern
    Recognition</i>, IEEE, 2023, pp. 24364–73, doi:<a href="https://doi.org/10.1109/cvpr52729.2023.02334">10.1109/cvpr52729.2023.02334</a>.'
  short: E.B. Iofinova, A. Krumes, D.-A. Alistarh, in:, 2023 IEEE/CVF Conference on
    Computer Vision and Pattern Recognition, IEEE, 2023, pp. 24364–24373.
conference:
  end_date: 2023-06-24
  location: Vancouver, BC, Canada
  name: 'CVPR: Conference on Computer Vision and Pattern Recognition'
  start_date: 2023-06-17
corr_author: '1'
date_created: 2024-01-10T08:42:40Z
date_published: 2023-08-22T00:00:00Z
date_updated: 2026-05-19T11:20:27Z
day: '22'
department:
- _id: DaAl
- _id: ChLa
doi: 10.1109/cvpr52729.2023.02334
ec_funded: 1
external_id:
  arxiv:
  - '2304.12622'
  isi:
  - '001062531308068'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2304.12622
month: '08'
oa: 1
oa_version: Preprint
page: 24364-24373
project:
- _id: 9B9290DE-BA93-11EA-9121-9846C619BF3A
  grant_number: W1260-N35
  name: Vienna Graduate School on Computational Optimization
- _id: 268A44D6-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '805223'
  name: Elastic Coordination for Scalable Machine Learning
publication: 2023 IEEE/CVF Conference on Computer Vision and Pattern Recognition
publication_identifier:
  eisbn:
  - '9798350301298'
  eissn:
  - 2575-7075
publication_status: published
publisher: IEEE
quality_controlled: '1'
related_material:
  link:
  - relation: software
    url: https://github.com/IST-DASLab/pruned-vision-model-bias
  record:
  - id: '21854'
    relation: dissertation_contains
    status: public
status: public
title: 'Bias in pruned vision models: In-depth analysis and countermeasures'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '12299'
abstract:
- lang: eng
  text: 'Transfer learning is a classic paradigm by which models pretrained on large
    “upstream” datasets are adapted to yield good results on “downstream” specialized
    datasets. Generally, more accurate models on the “upstream” dataset tend to provide
    better transfer accuracy “downstream”. In this work, we perform an in-depth investigation
    of this phenomenon in the context of convolutional neural networks (CNNs) trained
    on the ImageNet dataset, which have been pruned-that is, compressed by sparsifiying
    their connections. We consider transfer using unstructured pruned models obtained
    by applying several state-of-the-art pruning methods, including magnitude-based,
    second-order, regrowth, lottery-ticket, and regularization approaches, in the
    context of twelve standard transfer tasks. In a nutshell, our study shows that
    sparse models can match or even outperform the transfer performance of dense models,
    even at high sparsities, and, while doing so, can lead to significant inference
    and even training speedups. At the same time, we observe and analyze significant
    differences in the behaviour of different pruning methods. The code is available
    at: https://github.com/IST-DASLab/sparse-imagenet-transfer.'
acknowledgement: he authors would like to sincerely thank Christoph Lampert and Nir
  Shavit for fruitful discussions during the development of this work, and Eldar Kurtic
  for experimental support. EI was supported in part by the FWF DK VGSCO, grant agreement
  number W1260-N35, while AP and DA acknowledge generous support by the ERC, via Starting
  Grant 805223 ScaleML.
article_processing_charge: No
arxiv: 1
author:
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Elena-Alexandra
  full_name: Peste, Elena-Alexandra
  id: 32D78294-F248-11E8-B48F-1D18A9856A87
  last_name: Peste
- first_name: Mark
  full_name: Kurtz, Mark
  last_name: Kurtz
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
citation:
  ama: 'Iofinova EB, Krumes A, Kurtz M, Alistarh D-A. How well do sparse ImageNet
    models transfer? In: <i>2022 IEEE/CVF Conference on Computer Vision and Pattern
    Recognition</i>. Institute of Electrical and Electronics Engineers; 2022:12256-12266.
    doi:<a href="https://doi.org/10.1109/cvpr52688.2022.01195">10.1109/cvpr52688.2022.01195</a>'
  apa: 'Iofinova, E. B., Krumes, A., Kurtz, M., &#38; Alistarh, D.-A. (2022). How
    well do sparse ImageNet models transfer? In <i>2022 IEEE/CVF Conference on Computer
    Vision and Pattern Recognition</i> (pp. 12256–12266). New Orleans, LA, United
    States: Institute of Electrical and Electronics Engineers. <a href="https://doi.org/10.1109/cvpr52688.2022.01195">https://doi.org/10.1109/cvpr52688.2022.01195</a>'
  chicago: Iofinova, Eugenia B, Alexandra Krumes, Mark Kurtz, and Dan-Adrian Alistarh.
    “How Well Do Sparse ImageNet Models Transfer?” In <i>2022 IEEE/CVF Conference
    on Computer Vision and Pattern Recognition</i>, 12256–66. Institute of Electrical
    and Electronics Engineers, 2022. <a href="https://doi.org/10.1109/cvpr52688.2022.01195">https://doi.org/10.1109/cvpr52688.2022.01195</a>.
  ieee: E. B. Iofinova, A. Krumes, M. Kurtz, and D.-A. Alistarh, “How well do sparse
    ImageNet models transfer?,” in <i>2022 IEEE/CVF Conference on Computer Vision
    and Pattern Recognition</i>, New Orleans, LA, United States, 2022, pp. 12256–12266.
  ista: 'Iofinova EB, Krumes A, Kurtz M, Alistarh D-A. 2022. How well do sparse ImageNet
    models transfer? 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition.
    CVPR: Computer Vision and Pattern Recognition, 12256–12266.'
  mla: Iofinova, Eugenia B., et al. “How Well Do Sparse ImageNet Models Transfer?”
    <i>2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition</i>, Institute
    of Electrical and Electronics Engineers, 2022, pp. 12256–66, doi:<a href="https://doi.org/10.1109/cvpr52688.2022.01195">10.1109/cvpr52688.2022.01195</a>.
  short: E.B. Iofinova, A. Krumes, M. Kurtz, D.-A. Alistarh, in:, 2022 IEEE/CVF Conference
    on Computer Vision and Pattern Recognition, Institute of Electrical and Electronics
    Engineers, 2022, pp. 12256–12266.
conference:
  end_date: 2022-06-24
  location: New Orleans, LA, United States
  name: 'CVPR: Computer Vision and Pattern Recognition'
  start_date: 2022-06-18
corr_author: '1'
date_created: 2023-01-16T10:06:00Z
date_published: 2022-09-27T00:00:00Z
date_updated: 2026-04-07T13:30:19Z
day: '27'
department:
- _id: DaAl
- _id: ChLa
doi: 10.1109/cvpr52688.2022.01195
ec_funded: 1
external_id:
  arxiv:
  - '2111.13445'
  isi:
  - '000870759105034'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2111.13445
month: '09'
oa: 1
oa_version: Preprint
page: 12256-12266
project:
- _id: 9B9290DE-BA93-11EA-9121-9846C619BF3A
  grant_number: W1260-N35
  name: Vienna Graduate School on Computational Optimization
- _id: 268A44D6-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '805223'
  name: Elastic Coordination for Scalable Machine Learning
publication: 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition
publication_identifier:
  eissn:
  - 2575-7075
publication_status: published
publisher: Institute of Electrical and Electronics Engineers
quality_controlled: '1'
related_material:
  record:
  - id: '13074'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: How well do sparse ImageNet models transfer?
type: conference
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
year: '2022'
...
---
_id: '12495'
abstract:
- lang: eng
  text: "Fairness-aware learning aims at constructing classifiers that not only make
    accurate predictions, but also do not discriminate against specific groups. It
    is a fast-growing area of\r\nmachine learning with far-reaching societal impact.
    However, existing fair learning methods\r\nare vulnerable to accidental or malicious
    artifacts in the training data, which can cause\r\nthem to unknowingly produce
    unfair classifiers. In this work we address the problem of\r\nfair learning from
    unreliable training data in the robust multisource setting, where the\r\navailable
    training data comes from multiple sources, a fraction of which might not be representative
    of the true data distribution. We introduce FLEA, a filtering-based algorithm\r\nthat
    identifies and suppresses those data sources that would have a negative impact
    on\r\nfairness or accuracy if they were used for training. As such, FLEA is not
    a replacement of\r\nprior fairness-aware learning methods but rather an augmentation
    that makes any of them\r\nrobust against unreliable training data. We show the
    effectiveness of our approach by a\r\ndiverse range of experiments on multiple
    datasets. Additionally, we prove formally that\r\n–given enough data– FLEA protects
    the learner against corruptions as long as the fraction of\r\naffected data sources
    is less than half. Our source code and documentation are available at\r\nhttps://github.com/ISTAustria-CVML/FLEA."
acknowledged_ssus:
- _id: ScienComp
acknowledgement: 'The authors would like to thank Bernd Prach, Elias Frantar, Alexandra
  Peste, Mahdi Nikdan, and Peter Súkeník for their helpful feedback. This research
  was supported by the Scientific Service Units (SSU) of IST Austria through resources
  provided by Scientific Computing (SciComp). This publication was made possible by
  an ETH AI Center postdoctoral fellowship granted to Nikola Konstantinov. Eugenia
  Iofinova was supported in part by the FWF DK VGSCO, grant agreement number W1260-N35. '
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Nikola H
  full_name: Konstantinov, Nikola H
  id: 4B9D76E4-F248-11E8-B48F-1D18A9856A87
  last_name: Konstantinov
  orcid: 0009-0009-5204-7621
- first_name: Christoph
  full_name: Lampert, Christoph
  id: 40C20FD2-F248-11E8-B48F-1D18A9856A87
  last_name: Lampert
  orcid: 0000-0001-8622-7887
citation:
  ama: 'Iofinova EB, Konstantinov NH, Lampert C. FLEA: Provably robust fair multisource
    learning from unreliable training data. <i>Transactions on Machine Learning Research</i>.
    2022.'
  apa: 'Iofinova, E. B., Konstantinov, N. H., &#38; Lampert, C. (2022). FLEA: Provably
    robust fair multisource learning from unreliable training data. <i>Transactions
    on Machine Learning Research</i>. ML Research Press.'
  chicago: 'Iofinova, Eugenia B, Nikola H Konstantinov, and Christoph Lampert. “FLEA:
    Provably Robust Fair Multisource Learning from Unreliable Training Data.” <i>Transactions
    on Machine Learning Research</i>. ML Research Press, 2022.'
  ieee: 'E. B. Iofinova, N. H. Konstantinov, and C. Lampert, “FLEA: Provably robust
    fair multisource learning from unreliable training data,” <i>Transactions on Machine
    Learning Research</i>. ML Research Press, 2022.'
  ista: 'Iofinova EB, Konstantinov NH, Lampert C. 2022. FLEA: Provably robust fair
    multisource learning from unreliable training data. Transactions on Machine Learning
    Research.'
  mla: 'Iofinova, Eugenia B., et al. “FLEA: Provably Robust Fair Multisource Learning
    from Unreliable Training Data.” <i>Transactions on Machine Learning Research</i>,
    ML Research Press, 2022.'
  short: E.B. Iofinova, N.H. Konstantinov, C. Lampert, Transactions on Machine Learning
    Research (2022).
corr_author: '1'
date_created: 2023-02-02T20:29:57Z
date_published: 2022-12-22T00:00:00Z
date_updated: 2025-12-30T11:04:31Z
day: '22'
ddc:
- '000'
department:
- _id: ChLa
external_id:
  arxiv:
  - '2106.11732'
file:
- access_level: open_access
  checksum: 97c8a8470759cab597abb973ca137a3b
  content_type: application/pdf
  creator: dernst
  date_created: 2023-02-23T10:30:04Z
  date_updated: 2023-02-23T10:30:04Z
  file_id: '12673'
  file_name: 2022_TMLR_Iofinova.pdf
  file_size: 1948063
  relation: main_file
  success: 1
file_date_updated: 2023-02-23T10:30:04Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://openreview.net/forum?id=XsPopigZXV
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 9B9290DE-BA93-11EA-9121-9846C619BF3A
  grant_number: W1260-N35
  name: Vienna Graduate School on Computational Optimization
publication: Transactions on Machine Learning Research
publication_identifier:
  issn:
  - 2835-8856
publication_status: published
publisher: ML Research Press
quality_controlled: '1'
related_material:
  link:
  - description: source code
    relation: software
    url: https://github.com/ISTAustria-CVML/FLEA
status: public
title: 'FLEA: Provably robust fair multisource learning from unreliable training data'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
_id: '11458'
abstract:
- lang: eng
  text: 'The increasing computational requirements of deep neural networks (DNNs)
    have led to significant interest in obtaining DNN models that are sparse, yet
    accurate. Recent work has investigated the even harder case of sparse training,
    where the DNN weights are, for as much as possible, already sparse to reduce computational
    costs during training. Existing sparse training methods are often empirical and
    can have lower accuracy relative to the dense baseline. In this paper, we present
    a general approach called Alternating Compressed/DeCompressed (AC/DC) training
    of DNNs, demonstrate convergence for a variant of the algorithm, and show that
    AC/DC outperforms existing sparse training methods in accuracy at similar computational
    budgets; at high sparsity levels, AC/DC even outperforms existing methods that
    rely on accurate pre-trained dense models. An important property of AC/DC is that
    it allows co-training of dense and sparse models, yielding accurate sparse–dense
    model pairs at the end of the training process. This is useful in practice, where
    compressed variants may be desirable for deployment in resource-constrained settings
    without re-doing the entire training flow, and also provides us with insights
    into the accuracy gap between dense and compressed models. The code is available
    at: https://github.com/IST-DASLab/ACDC.'
acknowledged_ssus:
- _id: ScienComp
acknowledgement: This project has received funding from the European Research Council
  (ERC) under the European Union’s Horizon 2020 research and innovation programme
  (grant agreement No 805223 ScaleML), and a CNRS PEPS grant. This research was supported
  by the Scientific Service Units (SSU) of IST Austria through resources provided
  by Scientific Computing (SciComp). We would also like to thank Christoph Lampert
  for his feedback on an earlier version of this work, as well as for providing hardware
  for the Transformer-XL experiments.
alternative_title:
- Advances in Neural Information Processing Systems
article_processing_charge: No
arxiv: 1
author:
- first_name: Elena-Alexandra
  full_name: Peste, Elena-Alexandra
  id: 32D78294-F248-11E8-B48F-1D18A9856A87
  last_name: Peste
- first_name: Eugenia B
  full_name: Iofinova, Eugenia B
  id: f9a17499-f6e0-11ea-865d-fdf9a3f77117
  last_name: Iofinova
  orcid: 0000-0002-7778-3221
- first_name: Adrian
  full_name: Vladu, Adrian
  last_name: Vladu
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
citation:
  ama: 'Krumes A, Iofinova EB, Vladu A, Alistarh D-A. AC/DC: Alternating Compressed/DeCompressed
    training of deep neural networks. In: <i>35th Conference on Neural Information
    Processing Systems</i>. Vol 34. Neural Information Processing Systems Foundation;
    2021:8557-8570.'
  apa: 'Krumes, A., Iofinova, E. B., Vladu, A., &#38; Alistarh, D.-A. (2021). AC/DC:
    Alternating Compressed/DeCompressed training of deep neural networks. In <i>35th
    Conference on Neural Information Processing Systems</i> (Vol. 34, pp. 8557–8570).
    Virtual, Online: Neural Information Processing Systems Foundation.'
  chicago: 'Krumes, Alexandra, Eugenia B Iofinova, Adrian Vladu, and Dan-Adrian Alistarh.
    “AC/DC: Alternating Compressed/DeCompressed Training of Deep Neural Networks.”
    In <i>35th Conference on Neural Information Processing Systems</i>, 34:8557–70.
    Neural Information Processing Systems Foundation, 2021.'
  ieee: 'A. Krumes, E. B. Iofinova, A. Vladu, and D.-A. Alistarh, “AC/DC: Alternating
    Compressed/DeCompressed training of deep neural networks,” in <i>35th Conference
    on Neural Information Processing Systems</i>, Virtual, Online, 2021, vol. 34,
    pp. 8557–8570.'
  ista: 'Krumes A, Iofinova EB, Vladu A, Alistarh D-A. 2021. AC/DC: Alternating Compressed/DeCompressed
    training of deep neural networks. 35th Conference on Neural Information Processing
    Systems. NeurIPS: Neural Information Processing Systems, Advances in Neural Information
    Processing Systems, vol. 34, 8557–8570.'
  mla: 'Krumes, Alexandra, et al. “AC/DC: Alternating Compressed/DeCompressed Training
    of Deep Neural Networks.” <i>35th Conference on Neural Information Processing
    Systems</i>, vol. 34, Neural Information Processing Systems Foundation, 2021,
    pp. 8557–70.'
  short: A. Krumes, E.B. Iofinova, A. Vladu, D.-A. Alistarh, in:, 35th Conference
    on Neural Information Processing Systems, Neural Information Processing Systems
    Foundation, 2021, pp. 8557–8570.
conference:
  end_date: 2021-12-14
  location: Virtual, Online
  name: 'NeurIPS: Neural Information Processing Systems'
  start_date: 2021-12-06
corr_author: '1'
date_created: 2022-06-20T12:11:53Z
date_published: 2021-12-06T00:00:00Z
date_updated: 2026-06-18T17:18:20Z
day: '06'
ddc:
- '000'
department:
- _id: GradSch
- _id: DaAl
ec_funded: 1
external_id:
  arxiv:
  - '2106.12379'
intvolume: '        34'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://proceedings.neurips.cc/paper/2021/file/48000647b315f6f00f913caa757a70b3-Paper.pdf
month: '12'
oa: 1
oa_version: Published Version
page: 8557-8570
project:
- _id: 268A44D6-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '805223'
  name: Elastic Coordination for Scalable Machine Learning
publication: 35th Conference on Neural Information Processing Systems
publication_identifier:
  isbn:
  - '9781713845393'
  issn:
  - 1049-5258
publication_status: published
publisher: Neural Information Processing Systems Foundation
quality_controlled: '1'
related_material:
  record:
  - id: '13074'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: 'AC/DC: Alternating Compressed/DeCompressed training of deep neural networks'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 34
year: '2021'
...
