Research on key techniques of clustering and text categorization based on support vector machines. Research on key techniques of clustering and text categorization based on support vector machines Ji yu zhi chi xiang liang ji de ju lei ji wen ben fen lei guan jian ji shu yan jiu =: Research on key techniques of clustering and text categorization based on support vector machines / Research on personalized recommendation based on optimized support vector machine Research on key techniques of entity recommendation in web search engines