arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2403.07571cs.IR
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基于迭代偏好引导的主动推荐

Proactive Recommendation with Iterative Preference Guidance

Shuxian Bi, Wenjie Wang, Hang Pan, Fuli Feng, Xiangnan He

AI总结:

针对传统推荐系统被动迎合用户兴趣易引发过滤气泡等问题,提出迭代偏好引导(IPG)框架,以后处理方式结合交互概率与引导价值排序物品,可在保证准确率的同时有效引导用户兴趣向目标发展。

摘要:

推荐系统主要根据从用户反馈中学习到的用户兴趣定制个性化推荐。然而,这类推荐系统被动迎合用户兴趣,甚至会在反馈循环中强化现有兴趣,导致过滤气泡、观点极化等问题。为解决这一问题,主动推荐通过策略性调整推荐序列,主动引导用户对目标物品或主题产生新兴趣。现有主动推荐研究存在三大显著障碍:1)忽略引导过程中的用户反馈;2)缺乏对引导目标的显式建模;3)集成到现有工业级推荐系统的灵活性不足。为应对这些问题,我们提出了迭代偏好引导(Iterative Preference Guidance,IPG)框架。IPG以灵活的后处理方式实现主动推荐,根据同时考虑交互概率和引导价值的IPG分数对物品排序。这些分数通过迭代更新的用户表示显式估计,用户表示会纳入最新的用户交互信息。大量实验验证,IPG可在推荐准确率实现合理权衡的前提下,有效将用户兴趣引导至目标兴趣。代码可在https://github.com/GabyUSTC/IPG-Rec获取。

英文摘要:

Recommender systems mainly tailor personalized recommendations according to user interests learned from user feedback. However, such recommender systems passively cater to user interests and even reinforce existing interests in the feedback loop, leading to problems like filter bubbles and opinion polarization. To counteract this, proactive recommendation actively steers users towards developing new interests in a target item or topic by strategically modulating recommendation sequences. Existing work for proactive recommendation faces significant hurdles: 1) overlooking the user feedback in the guidance process; 2) lacking explicit modeling of the guiding objective; and 3) insufficient flexibility for integration into existing industrial recommender systems. To address these issues, we introduce an Iterative Preference Guidance (IPG) framework. IPG performs proactive recommendation in a flexible post-processing manner by ranking items according to their IPG scores that consider both interaction probability and guiding value. These scores are explicitly estimated with iteratively updated user representation that considers the most recent user interactions. Extensive experiments validate that IPG can effectively guide user interests toward target interests with a reasonable trade-off in recommender accuracy. The code is available at https://github.com/GabyUSTC/IPG-Rec.

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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