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Recommender systems are used to accurately and actively provide users with potentially interesting information or services. Collaborative filtering is a widely adopted approach to recommendation, but sparse data and cold-start users are often barriers to providing high quality recommendations. To address such issues, we propose a novel method that works to improve the performance of collaborative...
Key technologies of information reuse, which supports rapid collaborative design under network environment, are studied in this paper. The methods for integration modeling of information, the representation methods for information unit based on global view of the domain problem space, the model space and the active space in a design process, and the design process based on the hierarchy modeling strategy...
Model transformation plays an important role in current MDD (Model Driven Development). Combined with direct model manipulation, relational algebra and template theory, this paper presents a formalizing hybrid model transformation for the design in universal collaborative system. Furthermore, it implements an extendible prototype system based on MDA paradigm called CSCWMDA. CSCWMDA specifies a model...
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