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Keyphrase is the foundation of text categorization, automatic summary and information retrieval, so the research of automatic keyphrase extraction has important significance. The current keyphrase extraction methods don't take full advantage of the structural features of the document, too much emphasis on the importance of term frequency, which result in the low accuracy of keyphrase extraction. According...
With the sudden growth of information technology, network resources and resource search technology have been developed rapidly. However, general search engines such as Google and Baidu are difficult to satisfy our retrieval requirements in professional field because the lack of professionalism. This paper constructs a vertical educational resource oriented search engine based on the circumstances...
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