Scheduling Shipbuilding Using a Constraint Directed Graph Search: DAS-ERECT

To build a scheduling system for shipbuilding, we have adopted a hierarchical architecture and developed a constraint directed graph search technique for erection scheduling at the dock. First, in the hierarchical architecture, detailed schedules for the lower-level assembly plants are delegated to the individual plant's schedulers as long as the requirements from the higher-level scheduler are satisfied. However, if lower-level scheduling is impossible, the higher-level scheduler attempts to adjust the original requirements. Second, in the constraint directed graph search, the concepts of graph expansion and constraint directed pruning are amalgamated into an algorithm. The approaches are implemented in the DAS-ERECT system which is a sub-system of the DAS project undertaken for the Daewoo Shipbuilding Company.

[1]  Nils J. Nilsson,et al.  Principles of Artificial Intelligence , 1980, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[2]  R. M. Kerr,et al.  Implementation of an expert system for production scheduling , 1988 .

[3]  Jae Kyu Lee,et al.  PAMS: A Domain-specific Knowledge-based Parallel Machine Scheduling System , 1988 .

[4]  David Y. Y. Yun,et al.  A Planning/Scheduling Methodology for the Constrained Resource Problem , 1989, IJCAI.

[5]  Andrew Kusiak,et al.  Expert systems for planning and scheduling manufacturing systems , 1988 .

[6]  Mark S. Fox,et al.  Constraint-Directed Search: A Case Study of Job-Shop Scheduling , 1987 .

[7]  Monte Zweben,et al.  Constraint Satisfaction with Delayed Evaluation , 1989, IJCAI.

[8]  I. Kurtulus,et al.  Multi-Project Scheduling: Categorization of Heuristic Rules Performance , 1982 .

[9]  V. V. S. Sarma,et al.  Knowledge-Based Approaches to Scheduling Problems: A Survey , 1991, IEEE Trans. Knowl. Data Eng..

[10]  James H. Patterson,et al.  A Comparison of Exact Approaches for Solving the Multiple Constrained Resource, Project Scheduling Problem , 1984 .

[11]  Jae Kyu Lee,et al.  Spatial Scheduling and its Application to Shipbuilding , 1992 .

[12]  Michael Jeng-Ping Shaw.  Knowledge-based scheduling in flexible manufacturing systems: an integration of pattern-directed inference and heuristic search , 1988 .

[13]  Norman Sadeh,et al.  MICRO-BOSS: A micro-opportunistic factory scheduler , 1993 .

[14]  G. Guida,et al.  CRONOS-II: a knowledge-based scheduler for complex manufacturing environments , 1989, Proceedings. Second International Conference on Data and Knowledge Systems for Manufacturing and Engineering.

[15]  Michael Sullivan,et al.  Logos: a constraint-directed reasoning shell for operations management , 1991, IEEE Expert.

[16]  Edward W. Davis,et al.  Project Scheduling under Resource Constraints—Historical Review and Categorization of Procedures , 1973 .

[17]  Mark Stefik,et al.  Planning with Constraints (MOLGEN: Part 1) , 1981, Artif. Intell..

[18]  Mark S. Fox,et al.  Contingencies for the design of scheduling expert systems , 1993 .

[19]  Stephen F. Smith,et al.  ISIS—a knowledge‐based system for factory scheduling , 1984 .