%0 Journal Article %A Benítez Caballero, María José %A Medina Moreno, Jesús %A Ślezak, Dominik %T δ-information reducts and bireducts %D 2015 %@ 978-94-62520-77-6 %U http://hdl.handle.net/10498/19147 %X Attribute reduction is an important step in order to decrease the computational complexity to derive information from databases. In this paper, we extend the notions of reducts and bireducts introduced in rough set theory for attribute reduction purposes and let them work with similarity relations defined on attribute values. Hence, the related mathematical concepts will be introduced and the characterizations of the new reducts and bireducts will be given in terms of the corresponding generalizations of the discernibility function. %K Reduct %K Bireduct %K Similarity Relation %K Discernibility %~ Universidad de Cádiz