?url_ver=Z39.88-2004&rft_id=doi%3A10.1109%2FWAINA.2008.137&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Zhang%2C+Zhiwei&rft.aulast=Zhang&rft.aufirst=Zhiwei&rft.date=25+March+2008&rft.title=An+Efficient+Feature+Selection+Using+Hidden+Topic+in+Text+Categorization&rft.btitle=22nd+International+Conference+on+Advanced+Information+Networking+and+Applications+-+Workshops+(aina+workshops+2008)&rft.genre=proceeding