I apologize for disturbance to community. Few days ago, I talked about the problem that has been going on with Edward J. Yoon. I found that there had been some misunderstanding with him. The misunderstanding between us was cleared up. Later, I'll make constant effort to do more collaborative work.
Thank you :) -- Hyunsik Choi Database & Information Systems Group, Korea Univ. http://diveintodata.org
