The characteristic elements were determined, and discriminant functions established according to the characteristic elements achieve good results on discrimination.

Using fast algorithm of construction cost based on fuzzy prediction,the method was proposed that is to use weight number of characteristic element,give a time value coefficient to cost of typical engineering,choose a suitable characteristic element to count based on reality engineering conditions.

In this paper a novel approach for image classification based on feature element is proposed.

The engineering characteristics and appraisement of loess in Luan mining area;

Based on the 314 zone of blow filled soft clay engineering in Nanyou of Shenzhen,the paper studies the substance composition, microstructure and engineering characteristics of the blow filled soft clay.

By analyzing the logic structure and various features of drawing information related to budgeting, the concept of engineering feature class is put forward.

Moreover, to cope with the dynamic managing of the price of labour,material, machinery and engineering budgetary estimate on the basis of Engineering features, it uses Computer to handle, so a new approach is developed.

Applying the MATLAB software,this paper designs the program based on NN techniques,so to achieve the nonlinear imitation between engineering features and cost indexes.