Simplified decision table and its attributes reduction

A new method for computing core and attributes reduction of the inconsistent decision table is presented.First,U/C is used to simplify decision table.Furthermore,a new discernibility matrix is defined in simplified decision table.Finally,discernibility function is used to computing all attributes reductions.The method is reduced more stored spaces and times in produced discernibility matrix.Theoretical analysis and example show that the attributes reduction method is more efficient than those existing methods based on discernibility matrix and discernibility function.