Saravadee Sae Tan Gan Keng Hoon Chan Huah Yong Tang Enya Kong Cheong Sook Lin Mapping Search Results into Self-Customized Category Hierarchy. 311-323 2004 conf/ifip12/2004ip Intelligent Information Processing http://dx.doi.org/10.1007/0-387-23152-8_41 db/conf/ifip12/iip2004.html#TanHYKL04