Improved entropy weighted cluster analysis and its application

When using the entropy to weighted cluster for the selected indexes have a strong relationship, it will result in the duplication of information indicators, affecting the result of clustering. However, Entropy method can not eliminate or reduce the duplication of the information. To solve this problem, this article used grey correlation cluster to reduce the dimension of the index system and the correlation between indexes. Then the paper used this new method to analysis the level of economics development of 13 cities of Jiangsu province. It will simplify the system of indexes and get better effects.