• Citations Per Year
Learn More
A new data stream outlier detection algorithm SODRNN is proposed based on reverse nearest neighbors. We deal with the sliding window model, where outlier queries are performed in order to detect anomalies in the current window. The update of insertion or deletion only needs one scan of the current window, which improves efficiency. The capability of queries(More)
This article introduced the text excavation's research condition, has analyzed the text excavation basic concept and the technology, summarized the text excavation process, the commonly used algorithm, the text classification, the text cluster, the connection analysis, the tendency forecast and so on, pointed out that the algorithm the insufficiency, has(More)
On the basis of analyzing the basic concepts and the process of text excavation, the present study proposes some new methods in extraction of text features, deflation of characteristic collection, extraction of study and knowledge pattern, and appraisal of model quality. Meanwhile, it makes a comparison of two types of text categorization, text(More)
  • 1