A attribute reduction algorithm based on attribute dependence;

An efficient attribute reduction algorithm by modificatory discernibility matrix;

An attribute reduction algorithm of rough set based on discernable matrix;

A method for attributes reduction based on scan vector;

An Extending Method and Attributes Reduction of Rough Set Theory Based on Nearness Relation;

Extended Model and Attributes Reduction of Rough Set to Incomplete Information Systems;

Variable precision attribution reduction based on parallel artificial immune algorithm;

Quickly attribution reduction algorithm of information system;

Novel attribution reduction algorithm of information entropy

A Study of Reduction of Attributes and Set Covering Problem;

An Algorithm to Choose the Reduction of Attributes in Decision Analysis;

With the discernibility degree as heuristic information,a heuristic algorithm based on discernibility degree for reduction of attributes is presented,and the time complexity of this algorithm is analyzed.

Condition information quantitybased reduction of attribute in consistent decision tables;

The principle of attribute reduction is introduced,and the reduction of attribute is presented based on conditional information quantity,all serviceable logging attributes are optimally selected.

Reduction of attribute is one of the important topics in the search of rough set theory.

Two real world databases are tested, showing the validity of the entropy based attributes reduction algorithms.