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In this paper, we examine the significance of expansion of the user query by two techniques namely Efficient Clustering-By-Direction and Theme Clustering. These two techniques produce the clusters of keywords extracted from the set of retrieved documents for the user query. The former clustering is based on
To get semantic related searching results based on simple keywords, XML search engine not only need to search the matched nodes but also need to check whether those matched nodes are semantic related nodes in XML tree. Since the judgment on the semantic related nodes might cost much time, we first use mining
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.