Unified Collaborative and Content-Based Web Service Recommendation

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"The last decade has witnessed a tremendous growth of web services as a major technology for sharing data, computing resources, and programs on the web. With increasing adoption and presence of web services, designing novel approaches for efficient and effective web service recommendation has become of paramount importance. Most existing web service discovery and recommendation approaches focus on either perishing UDDI registries, or keyword-dominant web service search engines, which possess many limitations such as poor recommendation performance and heavy dependence on correct and complex queries from users. It would be desirable for a system to recommend web services that align with users' interests without requiring the users to explicitly specify queries. Recent research efforts on web service recommendation center on two prominent approaches: collaborative filtering and content-based recommendation. Unfortunately, both approaches have some drawbacks, which restrict their applicability in web service recommendation. In this paper, we propose a novel approach that unifies collaborative filtering and content-based recommendations. In particular, our approach considers simultaneously both rating data (e.g., QoS) and semantic content data (e.g., functionalities) of web services using a probabilistic generative model. In our model, unobservable user preferences are represented by introducing a set of latent variables, which can be statistically estimated. To verify the proposed approach, we conduct experiments using 3,693 real-world web services. The experimental results show that our approach outperforms the state-of-the-art methods on recommendation performance."
Publisher
IEEE COMPUTER SOC
Issue Date
2015-05
Language
English
Article Type
Article
Keywords

EM ALGORITHM; SYSTEMS

Citation

IEEE TRANSACTIONS ON SERVICES COMPUTING, v.8, no.3, pp.453 - 466

ISSN
1939-1374
DOI
10.1109/TSC.2014.2355842
URI
http://hdl.handle.net/10203/199497
Appears in Collection
IE-Journal Papers(저널논문)
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