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Reducts in Information Systems1

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In the paper we consider properties of minimal sets of attributes (reducts) which determine an equivalence relation ind(P). We show that the problem to figure out all reducts of a given set is NP-complete. Subsequently, we present some properties of the set of all attributes which are indispensable to create ind(P).
Title: Reducts in Information Systems1
Description:
In the paper we consider properties of minimal sets of attributes (reducts) which determine an equivalence relation ind(P).
We show that the problem to figure out all reducts of a given set is NP-complete.
Subsequently, we present some properties of the set of all attributes which are indispensable to create ind(P).

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