LongRecall: A Structured Approach for Robust Recall Evaluation in Long-Form Text

• URL: http://arxiv.org/abs/2508.15085v1
• Date: Wed, 20 Aug 2025 21:41:42 GMT
• Title: LongRecall: A Structured Approach for Robust Recall Evaluation in Long-Form Text
• Authors: MohamamdJavad Ardestani, Ehsan Kamalloo, Davood Rafiei,
• Abstract summary: LongRecall is a three-stage recall evaluation framework.<n>It decomposes answers into self-contained facts, narrows plausible candidate matches through lexical and semantic filtering, and verifies alignment.<n>We evaluate LongRecall on three challenging long-form QA benchmarks using both human annotations and LLM-based judges.
• Score: 14.211177885010029
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: LongRecall. The completeness of machine-generated text, ensuring that it captures all relevant information, is crucial in domains such as medicine and law and in tasks like list-based question answering (QA), where omissions can have serious consequences. However, existing recall metrics often depend on lexical overlap, leading to errors with unsubstantiated entities and paraphrased answers, while LLM-as-a-Judge methods with long holistic prompts capture broader semantics but remain prone to misalignment and hallucinations without structured verification. We introduce LongRecall, a general three-stage recall evaluation framework that decomposes answers into self-contained facts, successively narrows plausible candidate matches through lexical and semantic filtering, and verifies their alignment through structured entailment checks. This design reduces false positives and false negatives while accommodating diverse phrasings and contextual variations, serving as a foundational building block for systematic recall assessment. We evaluate LongRecall on three challenging long-form QA benchmarks using both human annotations and LLM-based judges, demonstrating substantial improvements in recall accuracy over strong lexical and LLM-as-a-Judge baselines.

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