Firstly, the method of how to guess the missing data is in detail discussed and the definition as well as the mining method of distance based association rule is given.

Study on the improved topological index of distance matrix and its application;

The element of matrix in the distance matrix S*_~ij is defined and the topological index W* based on the distance matrix is defined as well.

According to the adjacency matrix and distance matrix of the two units, the sequential formulas to calculate Wiener topological indices or molecular topological indices have been given.

Based on the minimum matrix distance criterion, the method equals to aggregating individual pairwise judgment matrices to find a matrix, the sum of whose distances to the individual matrices is minimized, and then the latter reduces to a goal programming model.

The equality of eigenvalue of departure matrix,judgement matrix and measure matrix,and the relation of their eigenvector are introduced.

By defining digital judgement matrix of judging matrix between departure matrix and relative interval number,a new ealculating method of judging matrix weighting vector with inter- val number under condition of group decision is given.