Proceedings of the 4th Annual 1994 IEEE Dual-Use Technologies and Applications Conference, IEEE, Utica (New York), 1994, pp.131-138:

Flexible, Constraint-Based Tools for Complex Scheduling Applications

Ora Lassila and Stephen F. Smith

Carnegie Mellon University
Pittsburgh, PA 15213, USA


In this paper, we advocate a view of scheduling application development as a differential and incremental process. We describe DITOPS, a flexible constraint-based transportation scheduling system that is designed to explicitly support this view, and has been used to provide a wide range of logistics support functionality.
The research reported in this paper has been supported in part by the Advanced Research Projects Agency under contract F30602-90-C-0119 and the CMU Robotics Institute. The authors are affiliated with the Center for Integrated Manufacturing Decision Systems of the CMU Robotics Institute. They can be reached through email at
Full paper in Postscript