Cross-Platform App Recommendation by Jointly Modeling Ratings and Texts

ACM Transactions on Information Systems - Tập 35 Số 4 - Trang 1-27 - 2017
Da Cao1, Xiangnan He2, Liqiang Nie3, Xiaochi Wei4, Xia Hu5, Shunxiang Wu1, Tat‐Seng Chua2
1Xiamen University, Xiamen, P. R. China
2National University of Singapore, Singapore
3Shandong University, Jinan, P. R. China
4Beijing Institute of Technology, Beijing, P.R. China
5Texas A8M University, College Station, USA

Tóm tắt

Over the last decade, the renaissance of Web technologies has transformed the online world into an application (App) driven society. While the abundant Apps have provided great convenience, their sheer number also leads to severe information overload, making it difficult for users to identify desired Apps. To alleviate the information overloading issue, recommender systems have been proposed and deployed for the App domain. However, existing work on App recommendation has largely focused on one single platform (e.g., smartphones), while it ignores the rich data of other relevant platforms (e.g., tablets and computers). In this article, we tackle the problem of cross-platform App recommendation, aiming at leveraging users’ and Apps’ data on multiple platforms to enhance the recommendation accuracy. The key advantage of our proposal is that by leveraging multiplatform data, the perpetual issues in personalized recommender systems—data sparsity and cold-start—can be largely alleviated. To this end, we propose a hybrid solution, STAR (short for “croSs-plaTform App Recommendation”) that integrates both numerical ratings and textual content from multiple platforms. In STAR, we innovatively represent an App as an aggregation of common features across platforms (e.g., App’s functionalities) and specific features that are dependent on the resided platform. In light of this, STAR can discriminate a user’s preference on an App by separating the user’s interest into two parts (either in the App’s inherent factors or platform-aware features). To evaluate our proposal, we construct two real-world datasets that are crawled from the App stores of iPhone, iPad, and iMac. Through extensive experiments, we show that our STAR method consistently outperforms highly competitive recommendation methods, justifying the rationality of our cross-platform App recommendation proposal and the effectiveness of our solution.

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ACM Transactions on Information Systems

Tập 35 Số 4

1-27

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