Synthetic Test Collections for Retrieval Evaluation

• URL: http://arxiv.org/abs/2405.07767v1
• Date: Mon, 13 May 2024 14:11:09 GMT
• Title: Synthetic Test Collections for Retrieval Evaluation
• Authors: Hossein A. Rahmani, Nick Craswell, Emine Yilmaz, Bhaskar Mitra, Daniel Campos,
• Abstract summary: Test collections play a vital role in evaluation of information retrieval (IR) systems. We investigate whether it is possible to use Large Language Models (LLMs) to construct synthetic test collections. Our experiments indicate that using LLMs it is possible to construct synthetic test collections that can reliably be used for retrieval evaluation.
• Score: 31.36035082257619
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Test collections play a vital role in evaluation of information retrieval (IR) systems. Obtaining a diverse set of user queries for test collection construction can be challenging, and acquiring relevance judgments, which indicate the appropriateness of retrieved documents to a query, is often costly and resource-intensive. Generating synthetic datasets using Large Language Models (LLMs) has recently gained significant attention in various applications. In IR, while previous work exploited the capabilities of LLMs to generate synthetic queries or documents to augment training data and improve the performance of ranking models, using LLMs for constructing synthetic test collections is relatively unexplored. Previous studies demonstrate that LLMs have the potential to generate synthetic relevance judgments for use in the evaluation of IR systems. In this paper, we comprehensively investigate whether it is possible to use LLMs to construct fully synthetic test collections by generating not only synthetic judgments but also synthetic queries. In particular, we analyse whether it is possible to construct reliable synthetic test collections and the potential risks of bias such test collections may exhibit towards LLM-based models. Our experiments indicate that using LLMs it is possible to construct synthetic test collections that can reliably be used for retrieval evaluation.

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