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ACM Transactions on Information Systems (TOIS)
Constraint satisfaction in logic programming
Constraint satisfaction in logic programming
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PADL '99 Proceedings of the First International Workshop on Practical Aspects of Declarative Languages
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IEA/AIE'2003 Proceedings of the 16th international conference on Developments in applied artificial intelligence
Enhancing the Programmability of Spreadsheets with Logic Programming
VLHCC '07 Proceedings of the IEEE Symposium on Visual Languages and Human-Centric Computing
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ICLP'06 Proceedings of the 22nd international conference on Logic Programming
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INAP'05 Proceedings of the 16th international conference on Applications of Declarative Programming and Knowledge Management
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We introduce a generalization of the spreadsheet paradigm, called Knowledgesheet, for solving a class of constraint satisfaction problems. The traditional spreadsheet paradigm is based on attaching arithmetic expressions to individual cells and then evaluating them; our Knowledgesheet interface instead allows finite domain constraints to be attached to individual cells that are then solved to obtain a solution. This extension provides an easy-to-use interface for solving a large class of constraint satisfaction problems--those whose specification and solution conforms to a 2-dimensional structure, e.g., scheduling problems, timetabling problems, etc. A prototype for the Knowledgesheet has been developed and applied to solve many different types of problems.