Stefano Bistarelli (auth.)3540211810, 9783540211815, 9783540259251
Constraint satisfaction and constraint programming have shown to be very simple but powerful ideas, with applications in various areas. Still, in the last ten years, the simple notion of constraints has shown some deficiencies concerning both theory and practice, typically in the way over-constrained problems and preferences are treated. For this reason, the notion of soft constraints has been introduced with semiring-based soft constraints and valued constraints being the two main general frameworks.
This book includes formal definitions and properties of semiring-based soft constraints, as well as their use within constraint logic programming and concurrent constraint programming. Moreover, the author shows how to adapt existing notions and techniques such as abstraction and interchangeability to the soft constraint framework and it is demonstrated how soft constraints can be used in some application areas, such as security.
Overall, this book is a great starting point for anyone interested in understanding the basics of semiring-based soft constraints.
Table of contents :
Front Matter….Pages –
1. Introduction….Pages 1-20
2. Soft Constraint Satisfaction Problems….Pages 21-50
3. Towards SCSPs Solutions….Pages 51-98
4. SCSP Abstraction….Pages 99-124
5. Higher Order Semiring-Based Constraints….Pages 125-136
6. Soft CLP….Pages 137-169
7. SCLP and Generalized Shortest Path Problems….Pages 171-189
8. Soft Concurrent Constraint Programming….Pages 191-212
9. Interchangeability in Soft CSPs….Pages 213-235
10. SCSPs for Modelling Attacks to Security Protocols….Pages 237-262
11. Conclusions and Directions for Future Work….Pages 263-267
Back Matter….Pages –
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