Global Constraints in Distributed Constraint Satisfaction and Optimization

نویسندگان

  • Christian Bessiere
  • Ismel Brito
  • Patricia Gutierrez
  • Pedro Meseguer
چکیده

Global constraints are an essential component in the efficiency of centralized constraint programming. We propose to include global constraints in distributed constraint satisfaction and optimization problems (DisCSPs and DCOPs). We detail how this inclusion can be done, considering different representations for global constraints (direct, nested, binary). We explore the relation of global constraints with local consistency (both in the hard and soft cases), in particular for generalized arc consistency (GAC). We provide experimental evidence of the benefits of global constraints on several benchmarks, both for distributed constraint satisfaction and for distributed constraint optimization.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Distributed Constraint Programming with Agents

Many combinatorial optimization problems lend themselves to be modeled as distributed constraint optimization problems (DisCOP). Problems such as job shop scheduling have an intuitive matching between agents and machines. In distributed constraint problems, agents control variables and are connected via constraints. We have equipped these agents with a full constraint solver. This makes it poss...

متن کامل

Global constraints in distributed constraint satisfaction

Global constraints have been crucial for the success of centralized constraint programming. Here, we propose the inclusion of global constraints in distributed constraint satisfaction. We show how this inclusion can be done, considering different decompositions for global contraints. We provide experimental evidence of their benefits on several benchmarks solved with the ABT algorithm.

متن کامل

Local Veri cation of Global Integrity Constraints in

We present an optimization for integrity constraint veriication in distributed databases. The optimization allows a global constraint, i.e. a constraint spanning multiple databases, to be veriied by accessing data at a single database, eliminating the cost of accessing remote data. The optimization is based on an algorithm that takes as input a global constraint and data to be inserted into a l...

متن کامل

Distributed Optimization for Overconstrained Problems and its Application

Distributed optimization requires the optimization of a global objective function that is distributed among a set of autonomous, communicating agents and is unknown by any individual agent. One major mode of attack has been to treat optimization as an overconstrained distributed satisfaction problem and exploit existing distributed constraint satisfaction techniques. These approaches require in...

متن کامل

Exploiting Problem Structure for Distributed Constraint Optimization

Distributed constraint optimization imposes considerable complexity in agents’ coordinated search for an optimal solution. However, in many application domains, problems often exhibit special structures that can be exploited to facilitate more efficient problem solving. One of the most recurrent structures involves disparity among subpmblems. We present a coordination mechanism, Anchor&Ascend, ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Comput. J.

دوره 57  شماره 

صفحات  -

تاریخ انتشار 2014