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Created page with "Title: Martin Cooper Main Research Question: Can a notion of soft arc consistency be extended to non-idempotent cost combination operators, such as Max-CSP, which allows for a more general and practical problem formulation? Methodology: The researchers proposed a small additional axiom that is satisfied by most existing soft constraints proposals. This axiom allows for the extension of soft arc consistency to non-idempotent cost combination operators. They introduced a..."
 
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Title: Martin Cooper
Title: Martin Cooper


Main Research Question: Can a notion of soft arc consistency be extended to non-idempotent cost combination operators, such as Max-CSP, which allows for a more general and practical problem formulation?
Main Research Question: Can a notion of arc consistency be extended to constraint optimization problems with non-idempotent cost combination operators?


Methodology: The researchers proposed a small additional axiom that is satisfied by most existing soft constraints proposals. This axiom allows for the extension of soft arc consistency to non-idempotent cost combination operators. They introduced a directional version of arc consistency, which has the potential to propagate penalties non-locally, and demonstrated its utility by showing that it implies a form of local optimality called arc irreducibility.
Methodology: The authors proposed a weak additional axiom satisfied by most existing soft constraints proposals. They introduced a notion of soft arc consistency that extends the classical notion of arc consistency and applies to non-idempotent cost combination operators. They also presented a polynomial time algorithm for enforcing soft arc consistency.


Results: The researchers showed that using the additional axiom, it is possible to define a notion of soft arc consistency that extends the classical notion of arc consistency and works with non-idempotent cost combination operators. They also demonstrated that the enforcement of this soft arc consistency is polynomial in time and has the same space and time complexities as enforcing arc consistency in CSPs when the cost combination operator is strictly monotonic.
Results: The authors demonstrated that using the additional axiom, it is possible to define a soft arc consistency that is applicable to non-idempotent cost combination operators. They showed that their algorithm has the same space and time complexities as enforcing arc consistency in CSPs for strictly monotonic cost combination operators (like Max-CSP). They also introduced a directional version of arc consistency and showed that it can potentially solve soft constraint problems on trees and imply a form of local optimality called arc irreducibility.


Implications: The extension of soft arc consistency to non-idempotent cost combination operators has significant implications for the field of combinatorial optimisation. It allows for a more general and practical problem formulation, such as Max-CSP, which was previously infeasible with existing methods. The directional version of arc consistency and the concept of arc irreducibility provide new tools for solving these more complex problems.
Implications: The extension of arc consistency to non-idempotent cost combination operators has significant implications for the field of constraint satisfaction problems. It allows for the solution of problems that were previously intractable, and it provides a more comprehensive approach to constraint optimization. The proposed algorithm and its properties offer a practical solution to these extended problems.


Link to Article: https://arxiv.org/abs/0111038v1
Link to Article: https://arxiv.org/abs/0111038v2
Authors:  
Authors:  
arXiv ID: 0111038v1
arXiv ID: 0111038v2


[[Category:Computer Science]]
[[Category:Computer Science]]
[[Category:Arc]]
[[Category:Arc]]
[[Category:Consistency]]
[[Category:Consistency]]
[[Category:Soft]]
[[Category:Problems]]
[[Category:Non]]
[[Category:Cost]]
[[Category:Cost]]
[[Category:Combination]]

Revision as of 03:32, 24 December 2023

Title: Martin Cooper

Main Research Question: Can a notion of arc consistency be extended to constraint optimization problems with non-idempotent cost combination operators?

Methodology: The authors proposed a weak additional axiom satisfied by most existing soft constraints proposals. They introduced a notion of soft arc consistency that extends the classical notion of arc consistency and applies to non-idempotent cost combination operators. They also presented a polynomial time algorithm for enforcing soft arc consistency.

Results: The authors demonstrated that using the additional axiom, it is possible to define a soft arc consistency that is applicable to non-idempotent cost combination operators. They showed that their algorithm has the same space and time complexities as enforcing arc consistency in CSPs for strictly monotonic cost combination operators (like Max-CSP). They also introduced a directional version of arc consistency and showed that it can potentially solve soft constraint problems on trees and imply a form of local optimality called arc irreducibility.

Implications: The extension of arc consistency to non-idempotent cost combination operators has significant implications for the field of constraint satisfaction problems. It allows for the solution of problems that were previously intractable, and it provides a more comprehensive approach to constraint optimization. The proposed algorithm and its properties offer a practical solution to these extended problems.

Link to Article: https://arxiv.org/abs/0111038v2 Authors: arXiv ID: 0111038v2