[Purpose/significance] For the lack of traditional methods, this paper presents an identification method for enterprise competitor based on user reviews.[Method/process] First of all, it chooses candidate competing products according to the analysis dimensions of enterprise, and grabs the relative reviews texts.Secondly, it extracts the product characteristics which users pay more attention from enterprise product reviews by information extracts technology, and designs a weight calculation algorithms of emotion features based on sentiment analysis technology.Thirdly, it analyzes the advantages and disadvantages of enterprise product characteristics by this algorithms, and then obtains the feature sets of advantages and disadvantages, to finish products vector space representation and similarity calculation.Finally, it digs up candidate competing products with similar advantage and complementary disadvantages to enterprise products according to the calculation results, and then chooses products with similar advantage and complementary disadvantages as the main competitors, and the other similar advantages products as the minor competitors.In the empirical part, it chooses "Red rice Note" phone as the analytic target, and uses the method which identifies competitor basecl on sentiment analysis to mine products of major and minor competitors based on the data from Taobao, Jingdong and ZOL.[Result/conclusion] This method can realize the identification and analysis of enterprise product level competitor.
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