In the method,firstly the ideal optimization scheme is derived by the expectation-variance ranking method;secondly incidence coefficient matrix is obtained based on the grey incidence degree theories;thirdly a linear programming model is developed to achieve attribute value as a key step;finally the p.

A new TOPSIS model which based on the gray correlation coefficient matrix is presented in order to overcome the deficiency in more indicator of decision-making process.

Distribution network flow calculation basedon incidence matrix squaring;

A method to establish OOPN incidence matrix for net performance analysis;

Consumable gas of compressor stations was not taken into consideration when branched gas pipeline networks flow equations were described with the incidence matrix method in the past,which would result in unavoidable deviation.

Then, the reengineering algo- rithm of incident matrix was employed to describe all the activities.

On this basis,it discusses,by using determinant,the calculation method of the number of tree graph vertices of the known connecting graph according to the nature of the basic incident matrix.

Furthermore, an incident matrix_based reengineering algorithm is proposed and used to describe the activity patterns determined.

In the paper an algorithm in building weighted directed graph is developed, the graph s weighted directed relationship matrix is defined, and how to implement the algorithm with the relationship matrix in computation is illuminated.

In the paper, the concept of system relationship matrix is presented, subsequently, a new diagnosis method based on relationship matrix is given.