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Constraint Satisfaction Networks

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(Constraint Satisfaction Network) is a network model for finding solutions satisfying multiple constraints in artificial intelligence and computer science. Overview: Components: 3 elements—variables, the ranges of their values (domains), and constraint relationships between variables. Representation: A graph structure with variables as “nodes (points)” and constraints as “edges (lines).” Purpose: To find combinations of variables (solutions) that satisfy all constraints simultaneously. Representative network models: CPN (Constraint Posting Network): A model that flexibly adds and changes constraints. Boltzmann machine: A neural network that changes states probabilistically and maximizes constraints. Hopfield network: A model that converges to a state (solution) minimizing an energy function. 🛠 Specific applications: Sudoku and crosswords: Rules against duplicate numbers or letters in cells serve as constraints. Map coloring: The constraint that adjacent regions must not be colored the same. Timetables and shift creation: Scheduling that considers room availability and work preferences.

Source updated 2026-08-25 · Snapshot 2026-10-08

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