Tu, H.-C.H.-C.TuHsiang, J.J.HsiangJIEH HSIANG2018-09-102018-09-102000http://www.scopus.com/inward/record.url?eid=2-s2.0-0033737116&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/289612Architecture and category knowledge for intelligent information retrieval agentsjournal article10.1016/S0167-9236(99)00089-5