arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2310.03043cs.LGcs.AIcs.HCcs.IR
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一种面向带有句子级反馈的交互式搜索的深度强化学习方法

A Deep Reinforcement Learning Approach for Interactive Search with Sentence-level Feedback

Walmart Global Tech(沃尔玛全球技术);Emory University(埃默里大学)

Jianghong Zhou, Joyce C. Ho, Chen Lin, Eugene Agichtein

AI总结:

针对现有交互式搜索RL方法仅关注项目级反馈、忽略句子级细粒度信息的问题,提出融合BERT模型与经验回放机制的DQrank方法,在三个数据集上性能较此前SOTA RL方法至少提升12%。

摘要:

交互式搜索可通过纳入用户的交互反馈提供更优体验,它能帮助规避无关信息、捕捉用户搜索意图,从而显著提升搜索准确率。现有最先进(SOTA)系统采用强化学习(RL)模型整合交互信息,但仅聚焦于项目级反馈,忽略了句子级反馈中蕴含的细粒度信息。然而这类反馈需要对RL动作空间进行大量探索,且依赖大量标注数据。本研究针对这些挑战,提出一种全新的深度Q学习(DQ)方法DQrank。DQrank适配自然语言处理领域的SOTA模型——基于BERT的模型,依据用户参与度筛选关键句子,并对项目进行排序,以获取更令人满意的响应。我们还提出两种机制以更好地探索最优动作。此外,DQrank利用DQ中的经验回放机制存储反馈句子,从而获得更优的初始排序性能。我们在三个搜索数据集上验证了DQrank的有效性,结果显示,DQrank的性能比此前的SOTA RL方法至少高出12%。我们还开展了详细的消融实验,消融结果表明,模型的每个组件都能从用户的句子级反馈中高效提取并累积长期参与效应。该架构为构建具备句子级交互能力的搜索系统提供了性能可期的新技术。

英文摘要:

Interactive search can provide a better experience by incorporating interaction feedback from the users. This can significantly improve search accuracy as it helps avoid irrelevant information and captures the users' search intents. Existing state-of-the-art (SOTA) systems use reinforcement learning (RL) models to incorporate the interactions but focus on item-level feedback, ignoring the fine-grained information found in sentence-level feedback. Yet such feedback requires extensive RL action space exploration and large amounts of annotated data. This work addresses these challenges by proposing a new deep Q-learning (DQ) approach, DQrank. DQrank adapts BERT-based models, the SOTA in natural language processing, to select crucial sentences based on users' engagement and rank the items to obtain more satisfactory responses. We also propose two mechanisms to better explore optimal actions. DQrank further utilizes the experience replay mechanism in DQ to store the feedback sentences to obtain a better initial ranking performance. We validate the effectiveness of DQrank on three search datasets. The results show that DQRank performs at least 12% better than the previous SOTA RL approaches. We also conduct detailed ablation studies. The ablation results demonstrate that each model component can efficiently extract and accumulate long-term engagement effects from the users' sentence-level feedback. This structure offers new technologies with promised performance to construct a search system with sentence-level interaction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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