LLM4PR: Improving Post-Ranking in Search Engine with Large Language Models

• URL: http://arxiv.org/abs/2411.01178v1
• Date: Sat, 02 Nov 2024 08:36:16 GMT
• Title: LLM4PR: Improving Post-Ranking in Search Engine with Large Language Models
• Authors: Yang Yan, Yihao Wang, Chi Zhang, Wenyuan Hou, Kang Pan, Xingkai Ren, Zelun Wu, Zhixin Zhai, Enyun Yu, Wenwu Ou, Yang Song,
• Abstract summary: Large Language Models for Post-Ranking in search engine (LLM4PR) We introduce a novel paradigm named Large Language Models for Post-Ranking in search engine (LLM4PR)
• Score: 9.566432486156335
• License:
• Abstract: Alongside the rapid development of Large Language Models (LLMs), there has been a notable increase in efforts to integrate LLM techniques in information retrieval (IR) and search engines (SE). Recently, an additional post-ranking stage is suggested in SE to enhance user satisfaction in practical applications. Nevertheless, research dedicated to enhancing the post-ranking stage through LLMs remains largely unexplored. In this study, we introduce a novel paradigm named Large Language Models for Post-Ranking in search engine (LLM4PR), which leverages the capabilities of LLMs to accomplish the post-ranking task in SE. Concretely, a Query-Instructed Adapter (QIA) module is designed to derive the user/item representation vectors by incorporating their heterogeneous features. A feature adaptation step is further introduced to align the semantics of user/item representations with the LLM. Finally, the LLM4PR integrates a learning to post-rank step, leveraging both a main task and an auxiliary task to fine-tune the model to adapt the post-ranking task. Experiment studies demonstrate that the proposed framework leads to significant improvements and exhibits state-of-the-art performance compared with other alternatives.

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