When creating bus body main model making use of UG s geometric parametric technical,we can shorten the development period,reduce the cost and improve the quality of design.

It not only effectively supports the top-down combine product design but manufacturing design and assembling design related to main model as well so as to shorten the period of product development.

The application of ASP and XML to building master model of PDM;

This paper studies the bicycle combing the technology of product developing,and the product master model,master document,master structure of the product are established on the basis of ABC analyses for parts and parameter of bicycle.

The static information includes kernel and common product information among different application domains, which are encapsulated in the master model (MM).

As well as the manufacturing possibility design and assembling possibility design correlated with the master model,which will greatly reduce the products research and development period.

The Study of Module Network and Community Mining Based on Topic Model;

Based on the analysis of the principle and method of two outstanding language models in recent years, that are latent semantic analysis and topic model, the prospects of the two models on topic identification and text mining was presented.