Abstract
There are many standards and texts about project management knowledge. It is hared to compare or adopt standards for a project. A project management domain ontology is tried to construct. The purpose of this study is to make easy to compare or explain the concept and structure of project management standards. The knowledge of PMBOK is going to be inputted to "Ho-zo" in this study. Ho-zo is a ontology editor provided by Osaka Univ. Tree quarters information have been inputted. 500 Concepts and over 2000 slots has been made. The construction procedures and problems are reported. The comments from ontology application researchers are expected.
