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An Open Review of OpenReview: A Critical Analysis of the Machine Learning Conference Review Process

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arxiv 2010.05137 v2 pith:A576KJN2 submitted 2020-10-11 cs.LG cs.CY

classification cs.LGcs.CY
keywords reviewacceptancedecisionslearningmachinescoresbiasconference
verification ladder T0 review T1 audit T2 compute T3 formal
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Mainstream machine learning conferences have seen a dramatic increase in the number of participants, along with a growing range of perspectives, in recent years. Members of the machine learning community are likely to overhear allegations ranging from randomness of acceptance decisions to institutional bias. In this work, we critically analyze the review process through a comprehensive study of papers submitted to ICLR between 2017 and 2020. We quantify reproducibility/randomness in review scores and acceptance decisions, and examine whether scores correlate with paper impact. Our findings suggest strong institutional bias in accept/reject decisions, even after controlling for paper quality. Furthermore, we find evidence for a gender gap, with female authors receiving lower scores, lower acceptance rates, and fewer citations per paper than their male counterparts. We conclude our work with recommendations for future conference organizers.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Bias at the Borderline: Who Gets the Benefit of the Doubt in Peer Review?

    cs.DL 2026-07 conditional novelty 8.0 of 10

    At ICLR, equally scored borderline papers from outside top-25 institutions are accepted less often, a gap concentrated in preprint-identifiable submissions; outcome tests find no evidence of a higher bar.

  2. Catalyst Papers in Artificial Intelligence Research: A Landscape on ICLR from 2017 to 2025

    cs.DL 2026-05 conditional novelty 7.0 of 10

    ICLR peer-review scores are orthogonal to future disruptiveness (EDM); EDM identifies highly cited catalysts far better than CD, node2vec, or an LLM rater, and catalyst types precede large topic-share and cross-topic ...

  3. Reviewer Scores Are Not Comparable Across Research Areas in ML Peer Review

    cs.DL 2026-04 conditional novelty 6.0 of 10

    An audit of 50,289 ICLR papers shows acceptance odds vary up to 8x across topics at equal reviewer scores, indicating scores are not comparable across research areas.

  4. SocialMaze: A Benchmark for Evaluating Social Reasoning in Large Language Models

    cs.CL 2025-05 conditional novelty 6.0 of 10

    SocialMaze is a six-task benchmark that claims to evaluate LLM social reasoning along deep reasoning, dynamic interaction, and information uncertainty dimensions.

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