A METHOD OF DEFECT ANALYSIS FOR CERAMIC TILES BASED ON VARIABLE PRECISION ROUGH SET

On the basis of the observation of practical defects in ceramic tiles and the limitations of the conventional model of rough sets, this paper proposed a new method of defect analysis for ceramic tiles by introducing a variable precision rough set model which uses approximation dependency of variable rough sets to realize attribute reduction and to establish decision making rules. This variable precision rough set model allows a certain rate of erred classification cases, thus improving the fault tolerance of the analysis. An example is given to prove its effectiveness and reliability as a new defect analytic method for ceramic tiles.