Kaoru Hiramatsu Jun-ichi Akahani Tetsuji Satoh Two-phase Query Modification using Semantic Relations based on Ontologies. 155-158 2003 conf/ijcai/2003iiweb IIWeb http://www.isi.edu/info-agents/workshops/ijcai03/papers/hiramatu.pdf db/conf/ijcai/ijcai2003iiweb.html#HiramatsuAS03