COT: Contextual Operating Tensor for Context-aware Recommender Systems | |
Liu, Qiang; Wu, Shu; Wang, Liang | |
2015 | |
会议名称 | AAAI Conference on Artificial Intelligence (AAAI) |
会议录名称 | In Proceedings of the Twenty-Ninth AAAI Conference on Artificial Intelligence (AAAI), 2015 |
会议日期 | January 25-30 |
会议地点 | Austin |
摘要 | With rapid growth of information on the internet, recommender systems become fundamental for helping users alleviate the problem of information overload. Since contextual information can be used as a signifi- cant factor in modeling user behavior, various contextaware recommendation methods are proposed. However, the state-of-the-art context modeling methods treat contexts as other dimensions similar to the dimensions of users and items, and cannot capture the special semantic operation of contexts. On the other hand, some works on multi-domain relation prediction can be used for the context-aware recommendation, but they have problems in generating recommendation under a large amount of contextual information. In this work, we propose Contextual Operating Tensor (COT) model, which represents the common semantic effects of contexts as a contextual operating tensor and represents a context as a latent vector. Then, to model the semantic operation of a context combination, we generate contextual operating matrix from the contextual operating tensor and latent vectors of contexts. Thus latent vectors of users and items can be operated by the contextual operating matrices. Experimental results show that the proposed COT model yields significant improvements over the competitive compared methods on three typical datasets, i.e., Food, Adom and Movielens-1M datasets |
关键词 | Recommender Systems Context-aware Contextual Operating |
文献类型 | 会议论文 |
条目标识符 | http://ir.ia.ac.cn/handle/173211/12347 |
专题 | 模式识别实验室 |
通讯作者 | Wu, Shu |
作者单位 | Institute of Automation, Chinese Academy of Sciences |
第一作者单位 | 中国科学院自动化研究所 |
通讯作者单位 | 中国科学院自动化研究所 |
推荐引用方式 GB/T 7714 | Liu, Qiang,Wu, Shu,Wang, Liang. COT: Contextual Operating Tensor for Context-aware Recommender Systems[C],2015. |
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文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
COT_ Contextual Oper(7993KB) | 会议论文 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
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