Using “weaker” functions for constraint propagation over real numbers
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This paper describes sub-definite models as a variety of constraint satisfaction problem. The use of the method of sub-definite calculations makes it possible to solve over determined and underdetermined problems, as well as problems with uncertain, imprecise and in-complete data. Constraint propagation in all these problems is supported by a single data-driven inference algorithm. Several examples are given to show the capabilities of this approach for solving a wide class of problems.