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This paper addresses the issue designing two systems that aim, for one, at helping managers to select pertaining continuous training activities and, for the other, at distributing the budget among the activities evaluated as relevant. The software and the models refer to the decision support system domain. The need for these kinds of systems is documented within the Software Engineering Institute's...
We present a refinement ordering between binary relations, viewed as programs or specifications. This ordering induces a complete join semilattice that can be embedded in a relation algebra. This embedding then allows an easy proof of many properties of the refinement semilattice, by making use of the well-known corresponding properties of relation algebras. The operations of the refinement semilattice...
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