CTR-Guided Generative Query Suggestion in Conversational Search

Fuente: arXiv
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Hauptverfasser: Min, Erxue, Huang, Hsiu-Yuan, Yang, Xihong, Yang, Min, Jia, Xin, Wu, Yunfang, Cai, Hengyi, Wang, Junfeng, Wang, Shuaiqiang, Yin, Dawei
Format: Preprint
Veröffentlicht: 2025
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author Min, Erxue
Huang, Hsiu-Yuan
Yang, Xihong
Yang, Min
Jia, Xin
Wu, Yunfang
Cai, Hengyi
Wang, Junfeng
Wang, Shuaiqiang
Yin, Dawei
author_facet Min, Erxue
Huang, Hsiu-Yuan
Yang, Xihong
Yang, Min
Jia, Xin
Wu, Yunfang
Cai, Hengyi
Wang, Junfeng
Wang, Shuaiqiang
Yin, Dawei
contents Generating effective query suggestions in conversational search requires aligning model outputs with user preferences, which is challenging due to sparse and noisy click signals. We propose GQS, a generative framework that integrates click modeling and preference optimization to enhance real-world user engagement. GQS consists of three key components: (1) a Multi-Source CTR Modeling module that captures diverse contextual signals to estimate fine-grained click-through rates; (2) a Diversity-Aware Preference Alignment strategy using CTR-weighted Direct Preference Optimization (DPO), which balances relevance and semantic diversity; and (3) a CTR-Calibrated Iterative Optimization process that jointly refines the CTR and generation models across training rounds. Experiments on two real-world tasks demonstrate that GQS outperforms strong baselines in CTR, relevance, and diversity.
format Preprint
id arxiv_https___arxiv_org_abs_2507_04072
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle CTR-Guided Generative Query Suggestion in Conversational Search
Min, Erxue
Huang, Hsiu-Yuan
Yang, Xihong
Yang, Min
Jia, Xin
Wu, Yunfang
Cai, Hengyi
Wang, Junfeng
Wang, Shuaiqiang
Yin, Dawei
Information Retrieval
Generating effective query suggestions in conversational search requires aligning model outputs with user preferences, which is challenging due to sparse and noisy click signals. We propose GQS, a generative framework that integrates click modeling and preference optimization to enhance real-world user engagement. GQS consists of three key components: (1) a Multi-Source CTR Modeling module that captures diverse contextual signals to estimate fine-grained click-through rates; (2) a Diversity-Aware Preference Alignment strategy using CTR-weighted Direct Preference Optimization (DPO), which balances relevance and semantic diversity; and (3) a CTR-Calibrated Iterative Optimization process that jointly refines the CTR and generation models across training rounds. Experiments on two real-world tasks demonstrate that GQS outperforms strong baselines in CTR, relevance, and diversity.
title CTR-Guided Generative Query Suggestion in Conversational Search
topic Information Retrieval
url https://arxiv.org/abs/2507.04072