Guest Editorship
-  Guest Editor, Special Issue on Integrated Product and Process Data
Management, Integrated Computer Aided Engineering Vol. 3, No. 1,
1996.  (co-guest-edit with Y.-M. Chen).
-  Guest Editor, Special Track on Artificial Intelligence in
Information Systems, IEEE Expert Apr. 1993 and Oct. 1993.
(co-guest-edit with W.B. Croft).
-  Issue Editor, Special Issue on Document Retrieval, Data
Engineering Bulletin IEEE Technical Committee on Data Engineering,
Vol. 13, No. 1, Mar. 1990.