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Improving Factuality of Abstractive Summarization via Contrastive Reward Learning

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arxiv 2307.04507 v1 pith:QFXFCN55 submitted 2023-07-10 cs.CL cs.AI

classification cs.CLcs.AI
keywords learningcontrastivefactualityrewardsummariessummarizationabstractivefactual
verification ladder T0 review T1 audit T2 compute T3 formal
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Modern abstractive summarization models often generate summaries that contain hallucinated or contradictory information. In this paper, we propose a simple but effective contrastive learning framework that incorporates recent developments in reward learning and factuality metrics. Empirical studies demonstrate that the proposed framework enables summarization models to learn from feedback of factuality metrics using contrastive reward learning, leading to more factual summaries by human evaluations. This suggests that further advances in learning and evaluation algorithms can feed directly into providing more factual summaries.

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Cited by 3 Pith papers

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

  1. Learning to Control Summaries with Score Ranking

    cs.CL 2026-04 unverdicted novelty 6.0 of 10

    A score-ranking loss enables controllable summarization by aligning outputs to evaluation scores, matching SOTA performance with dimension-specific control on LLaMA, Qwen, and Mistral.

  2. Chain-of-Verification Reduces Hallucination in Large Language Models

    cs.CL 2023-09 unverdicted novelty 6.0 of 10

    Chain-of-Verification reduces hallucinations in large language models by drafting responses, planning independent verification questions, answering them separately, and generating a final verified output.

  3. Calibrating Model-Based Evaluation Metrics for Summarization

    cs.CL 2026-04 unverdicted novelty 5.0 of 10

    A reference-free proxy scoring framework combined with GIRB calibration produces better-aligned evaluation metrics for summarization and outperforms baselines across seven datasets.

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