To overcome the shortcomings resulted from the preferred integration between subjective and objective weights in multi-attribute decision-making with condition and decision attributes,a quadratic programming model was proposed to get optimal weight integration without preference between the subjective and the objective weights.

Firstly,the shortcomings of two existed methods are analysed and a rule to estimate the rationality of methods for determining objective weight is set up.

A model with adjustability is proposed to seek objective weight based on entropy and then subjective weight and objective weight are integrated into general weight linearly.

Aiming at expansive soil judgment in Xiangtan-Shaoyang Expressway,the attribute recognition model based on objective weight is developed in this paper.

The model of project investment decision-making based on comprehensive weight and its use;

Aiming at these problems, this text put forward the investment decision-making model which is based on the comprehensive weight, this model considers the relation of all index comprehensively, and calculates the comprehensive weight of all index, then gets the comprehensive att.

Through the investigation on the structure and ecological benefits of shelter-belt on farmland in Ningxia and the analysis of comprehensive weight index, that the important roles played by large net, multi-shelter belt and mixed multi-tree-species in the construction of protection forests is explained.