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In order to solve the problem brought from the enormous policy texts and the complex management in the social insurance field, the article uses ontology as the way of representing and storing the knowledge. The article first constructed the framework of the ontology through manual work to ensure the relative accuracy of the ontology structure. Then it achieved the automatic ontology expansion based...
learns topics and keywords from a domain data stream. The conceptualization enriches a UIP, consisting of user interests modeled as terms and term-weight, by providing contextual information of the UIP. For this, the topic hierarchy extracts topic-deterministic keywords and their semantic associations with domain topics
With the development of computer-aided education and digital library, there have emerged large numbers of digital documents online for education purposes. However, it is far from convenient to retrieve mathematic geometry questions because current retrieval systems largely rely on keywords instead of geometry figure
hierarchical tree contains some relevant keywords of product descriptions, thus clarifying the meaning of the concept in the node. Therefore, consumers can pick out their interested products by using the discovered descriptive and valuable navigation of products. The experimental results on amazon.com, one of the most popular
achieve this, a graph, in which the external pages are nodes and a measure of similitude between them are edges, is built. This is a novel approach of building the edges since usually just the hyperlinks are used instead. The analysis shows that the properties related to the keywords are useful to explain the structure of
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