6Daniel Tkach. Technology Text Mining. Turning Inf ormation into Knowledge. A White Paper from IBM ,Feb.1998. http ://www-4, ibm. com/software/data/iminer/fortext/download/whiteweb. Html.
7AH- I-IWEE TAN. Text Mining : The state of the art and the challenges. PAKDD'99 Workshop on Knowledge discovery from Advanced Databases ( KDAD'99), Beijing, 1999.
二级参考文献5
1Yang Y，Proc of the 14th Intl Conf on Machine Learning ICML 97，1997年，412页
2Zalane O R，Proc of 1998ACM-SIGMOD Conf onManagement of Data.Seattle，1998年，581页
