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Query expansion with artificially generated texts

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arxiv 2012.08787 v1 pith:E2USITZ6 submitted 2020-12-16 cs.IR

classification cs.IR
keywords queryexpandexpansiongenerationimprovemodelsperformancesystem
verification ladder T0 review T1 audit T2 compute T3 formal
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A well-known way to improve the performance of document retrieval is to expand the user's query. Several approaches have been proposed in the literature, and some of them are considered as yielding state-of-the-art results in IR. In this paper, we explore the use of text generation to automatically expand the queries. We rely on a well-known neural generative model, GPT-2, that comes with pre-trained models for English but can also be fine-tuned on specific corpora. Through different experiments, we show that text generation is a very effective way to improve the performance of an IR system, with a large margin (+10% MAP gains), and that it outperforms strong baselines also relying on query expansion (LM+RM3). This conceptually simple approach can easily be implemented on any IR system thanks to the availability of GPT code and models.

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  1. A New Query Expansion Approach via Agent-Mediated Dialogic Inquiry

    cs.IR 2025-02 conditional novelty 4.0 of 10

    AMD uses three LLM agents (Socratic questioning, dialogic answering, reflective feedback) to generate and refine pseudo-answers for query expansion, reporting gains over prior methods on BEIR and TREC benchmarks.

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