Based on quantitative indication to the R&D enhancement factor and R&D inter-enhancement matrixes,the authors set up the optimization model of arranging products\' multistage R&D plan,and illustrate how to run this model in the paper.

A more efficient algorithm for attribute reduction based on the binary discernible matrix;

A simpler method,based on binary discernible matrix and binary matrix which is created according to different objects belong to the same decision category,is put forward.

Then we give a heuristic attribute reduction algorithm based on binary discernible matrix.

The improved discernibility matrix is put forward,the attribute importance is redefined and the Fuzzy Cluster is applied for the classification of attribute importance,then based on which a heuristic algorithm for reduction of knowledge and abstracting decision rules is proposed.