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Revisiting Zero-Shot Abstractive Summarization in the Era of Large Language Models from the Perspective of Position Bias
March 18, 2024, 4:48 a.m. | Anshuman Chhabra, Hadi Askari, Prasant Mohapatra
cs.CL updates on arXiv.org arxiv.org
Abstract: We characterize and study zero-shot abstractive summarization in Large Language Models (LLMs) by measuring position bias, which we propose as a general formulation of the more restrictive lead bias phenomenon studied previously in the literature. Position bias captures the tendency of a model unfairly prioritizing information from certain parts of the input text over others, leading to undesirable behavior. Through numerous experiments on four diverse real-world datasets, we study position bias in multiple LLM models …
abstract arxiv bias cs.ai cs.cl general language language models large language large language models literature llms measuring perspective restrictive study summarization type zero-shot
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