关键词: 判断矩阵, 0~2标度, 一致性优化调整, 层次分析法, 负载均衡

Abstract: The establishment and adjustment of the judgment matrix is very important in Analytic Hierarchy Process（AHP） algorithm. The paper establishes judgment matrix using the three-scale method after improving Satty’s 1 to 9 scaling method. Considering the reciprocal matrix necessary and sufficient conditions， the paper proposes the adjustment method when judgment matrix is inconsistent to improve the consistency of judgment matrix and reduce the amount of computation. When dealing with the load balancing of Web cluster system， the method can be used to determine the weights of the four major categories of parameters affecting the server load. On the basis of the original data, the following experiments show that the improved algorithm of AHP is more efficient when judgment matrix is inconsistent.

Key words: Judgment matrix, 0~2 scales, optimization and adjustment of consistency, Analytic Hierarchy Process（AHP）, load balancing