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arXiv · 2412.19906

Evaluate Summarization in Fine-Granularity: Auto Evaluation with LLM

Dong Yuan·Eti Rastogi·Fen Zhao·Sagar Goyal·Gautam Naik·Sree Prasanna Rajagopal
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Abstract

Due to the exponential growth of information and the need for efficient information consumption the task of summarization has gained paramount importance. Evaluating summarization accurately and objectively presents significant challenges, particularly when dealing with long and unstructured texts rich in content. Existing methods, such as ROUGE (Lin, 2004) and embedding similarities, often yield scores that have low correlation with human judgements and are also not intuitively understandable, making it difficult to gauge the true quality of the summaries. LLMs can mimic human in giving subjective reviews but subjective scores are hard to interpret and justify. They can be easily manipulated by altering the models and the tones of the prompts. In this paper, we introduce a novel evaluation methodology and tooling designed to address these challenges, providing a more comprehensive, accurate and interpretable assessment of summarization outputs. Our method (SumAutoEval) proposes and evaluates metrics at varying granularity levels, giving objective scores on 4 key dimensions such as completeness, correctness, Alignment and readability. We empirically demonstrate, that SumAutoEval enhances the understanding of output quality with better human correlation.

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Dong Yuan, Eti Rastogi, Fen Zhao, Sagar Goyal, Gautam Naik, Sree Prasanna Rajagopal. 2024-12-27. Evaluate Summarization in Fine-Granularity: Auto Evaluation with LLM. https://arxiv.org/abs/2412.19906

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