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发布时间: 2012-04-10
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The aim of a web-based recommender system is to pro-vide highly accurate and up-to-date recommendations toits users; in practice, it will hope to retain its users overtime. However, this raises unique challenges. To achievecomplex goals such as keeping the recommender model up-to-date over time, we need to consider a number of exter-nal requirements. Generally, these requirements arise fromthe physical nature of the system, for instance the availablecomputational resources


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