Application on Similarity Relation and Pretopology

Due to the tremendous use of computers, need for dealing with digital information continues grow. This has led constructing a structure saving in way that eases data retrieval and processing. An system is table form contains all needed user reach decision. Information systems are most common used knowledge representation, attribute reduction plays an important role paper devoted proposing strategy attributes based on similarity relation pretopological concepts. Moreover, new types spaces be constructed from system. Furthermore, comparison between pretopologies their pre-interiors system, as well different spaces, investigated. Finally, concept cover pretopology applied