@inproceedings{KEOD-2011-OkumuraH,
	author        = "Noriyuki Okumura and Yuto Hatakoshi",
	booktitle     = "{Proceedings of the Third International Conference on Knowledge Engineering and Ontology Development}",
	isbn          = "978-989-8425-80-5",
	pages         = "493--497",
	publisher     = "{SciTePress}",
	title         = "{A Refining Method of Obtained Attributes to Characterize Undefined Concepts using Search Engine}",
	year          = 2011,
}