Time-Space-Direction Algebra and its Application to Log Analysis for Heterogeneous Information Systems
Naofumi Yoshida, Jun Miyazaki · 2007
In this paper, we describe about the time-space-direction algebra and its application to log analysis for heterogeneous information systems. A time-space-direction algebra is a mathematical form that enables us to describe physical and electronic objects with temporal, spatial, and directional features. We have proposed the algebra and its application to an automatic metadata extraction for behaviors of physical and electronic objects in ubiquitous environment, and collaborative work. In this paper we discuss the feasibility and effectiveness of the application to log analysis for several heterogeneous information systems by experimental results.