Yunjiang Xi

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In order to provide more accurate and complete personalized knowledge service for users, this paper proposes a personalized knowledge service model by introducing the relevance feedback algorithm and a kind of relevance feedback mechanism that dynamically update the user model library by a comprehensive feedback degree comes from explicit and implicit(More)
Considering the importance of user-innovation knowledge to product and service innovation, this paper proposed knowledge discovering and analyzing methods on user-innovation communities based on weighted knowledge network (WKN). First, web mining methods were used for getting forum posts in virtual user-innovation communities, then the acquired keywords and(More)
Keywords clustering, as the basic method of domain knowledge analysis, has some problems such as difficult to understand the clustered tree diagram, scarce of further analysis methods, etc. The paper proposed a new approach to analyze domain knowledge based on keywords clustering. The proposed weighted knowledge model (WKN) is composed of two types of nodes(More)
Knowledge classification is a critical problem that has to be solved in implementation of knowledge management. However, a highlight issue is that the existing knowledge classification methods are unpractical for enterprise. In order to realize the automatic classification of enterprise knowledge, a method of enterprise text knowledge classification based(More)
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