Through comparing the weight updating in the traditional Adaboost algorithm,this paper presents a new algorithm of updating the weight,which combines the normalization process of the same type and between the different types.

The effects of different weight updating approaches of Adaboost on the performance of classifiers are analyzed respectively.

Discussion on the double regeneration of old residential area environment taking some community in Wuxi city as example;

Study of an efficient algorithm in background reconstruction and update;