Cocktail: A Comprehensive Information Retrieval Benchmark with LLM-Generated Documents Integration

• URL: http://arxiv.org/abs/2405.16546v2
• Date: Tue, 2 Jul 2024 12:23:37 GMT
• Title: Cocktail: A Comprehensive Information Retrieval Benchmark with LLM-Generated Documents Integration
• Authors: Sunhao Dai, Weihao Liu, Yuqi Zhou, Liang Pang, Rongju Ruan, Gang Wang, Zhenhua Dong, Jun Xu, Ji-Rong Wen,
• Abstract summary: The proliferation of Large Language Models (LLMs) has led to an influx of AI-generated content (AIGC) on the internet. The impact of this surge in AIGC on Information Retrieval systems remains an open question. We introduce Cocktail, a benchmark tailored for evaluating IR models in this mixed-sourced data landscape.
• Score: 60.535793237063885
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: The proliferation of Large Language Models (LLMs) has led to an influx of AI-generated content (AIGC) on the internet, transforming the corpus of Information Retrieval (IR) systems from solely human-written to a coexistence with LLM-generated content. The impact of this surge in AIGC on IR systems remains an open question, with the primary challenge being the lack of a dedicated benchmark for researchers. In this paper, we introduce Cocktail, a comprehensive benchmark tailored for evaluating IR models in this mixed-sourced data landscape of the LLM era. Cocktail consists of 16 diverse datasets with mixed human-written and LLM-generated corpora across various text retrieval tasks and domains. Additionally, to avoid the potential bias from previously included dataset information in LLMs, we also introduce an up-to-date dataset, named NQ-UTD, with queries derived from recent events. Through conducting over 1,000 experiments to assess state-of-the-art retrieval models against the benchmarked datasets in Cocktail, we uncover a clear trade-off between ranking performance and source bias in neural retrieval models, highlighting the necessity for a balanced approach in designing future IR systems. We hope Cocktail can serve as a foundational resource for IR research in the LLM era, with all data and code publicly available at \url{https://github.com/KID-22/Cocktail}.

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