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• W2892943592 abstract "The success of Web-based applications depends on their ability to convert first-time users into recurring ones. This problem is known as Pure Cold-Start and it refers to the capability of Recommender Systems (RSs) providing useful recommendations to users without historical data. Traditionally, the systems assume that items biased by popularity, recency and positive ratings suit the interests of most first-time users. However, our studies confirm a contra-intuitive hypothesis, showing users consumption preferences biased to non-popular items. For this reason, we introduce two new RSs to mitigate this problem based on user coverage maximization: Max-Coverage and Category-Exploration. Offline experiments show that our recommendations complement the traditional ones. Thus, we found an opportunity for improvements on state-of-the-art RSs. We hypothesize that combining distinct non-personalized RSs can be better to conquer the most first-time users than traditional ones. An online study conducted with 236 real users in movie domain reinforced this hypothesis. Hence, this study provides a clear message: we should compose product pages that mix complementary non-personalized RSs. • Use of complementary non-personalized RSs to conquer most first-time users. • The evaluation of new research hypotheses related to the Pure Cold Start. • The proposal of two novel solutions to mitigate the Pure Cold Start problem. • Discussion about some practical implications of this study in real scenarios." @default.
• W2892943592 created "2018-10-05" @default.
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• W2892943592 date "2019-02-01" @default.
• W2892943592 modified "2023-09-24" @default.
• W2892943592 title "The Pure Cold-Start Problem: A deep study about how to conquer first-time users in recommendations domains" @default.
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• W2892943592 doi "https://doi.org/10.1016/j.is.2018.09.001" @default.
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