In the architectural space, the user‘s behavior is the most important factor in evaluating the quality of
architecture. Normally, the evaluation of user behavioral performance was carried out after a building was
completed. Recently, interest in and efforts at pre-simulation based on information technology are
accelerating. However, since existing user simulation technology is concerned mainly with simply escaping
from a large space, it is impossible to simulate the behavior of multiple users in an architectural space.
The present study strives to develop a human-figured intelligent agent for advanced user simulation based
on ontology. The main purpose of the study is to employ the intelligent behaviors of a NPC(Non-player
Character) to infer the ontology of both spatial and user information. In this paper, we intend to integrate
ontology inference technology into the virtual space. And also, this study suggest the ontology visualization
technology which illustrate the ontology-based information and their change in the spatial information.