[IEEE The 9th IEEE International Conference on E-Commerce Technology and The 4th IEEE International Conference on Enterprise Computing, E-Commerce and E-Services (CEC-EEE 2007) - Tokyo, Japan (2007.07.23-2007.07.26)] The 9th IEEE International Conference on E-Commerce Technology and The 4th IEEE International Conference on Enterprise Computing, E-Commerce and E-Services (CEC-EEE 2007) - Dependency of Constrained Clustering of Transaction Data on Known Data Distribution