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arXiv 2301.01737cs.IRcs.AIcs.LG
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具有多源增强的Epidemic发现推荐

Episodes Discovery Recommendation with Multi-Source Augmentations

University of Illinois Chicago(伊利诺伊大学芝加哥分校);Spotify Research(Spotify研究院)

Ziwei Fan, Alice Wang, Zahra Nazari

摘要:

推荐系统(RS)通常通过基于历史交互的用户兴趣建模,从大量的项目中为用户检索潜在的候选项目。然而,历史交互数据是高度稀疏的,大多数项目是长尾项目,这限制了项目发现的表示学习。新的或冷启动项目的发现进一步加剧了这个问题。例如,在用户在播客空间中显示对比特币金融投资节目的兴趣之后,推荐系统可能想要建议,例如,一个新发布的区块链节目,来自一个更技术化的节目。事件相关性有助于发现,特别是当事件的交互数据有限时。因此,我们建立在经典的双塔模型,并引入新的多源增强使用对比学习框架(MACL),以提高情节嵌入学习,从众多相关的语义结合积极的情节。在一个大型音频流媒体平台的真实播客推荐数据集上进行的大量实验表明了该框架对用户播客探索和冷启动剧集推荐的有效性。

英文摘要:

Recommender systems (RS) commonly retrieve potential candidate items for users from a massive number of items by modeling user interests based on historical interactions. However, historical interaction data is highly sparse, and most items are long-tail items, which limits the representation learning for item discovery. This problem is further augmented by the discovery of novel or cold-start items. For example, after a user displays interest in bitcoin financial investment shows in the podcast space, a recommender system may want to suggest, e.g., a newly released blockchain episode from a more technical show. Episode correlations help the discovery, especially when interaction data of episodes is limited. Accordingly, we build upon the classical Two-Tower model and introduce the novel Multi-Source Augmentations using a Contrastive Learning framework (MSACL) to enhance episode embedding learning by incorporating positive episodes from numerous correlated semantics. Extensive experiments on a real-world podcast recommendation dataset from a large audio streaming platform demonstrate the effectiveness of the proposed framework for user podcast exploration and cold-start episode recommendation.

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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