Research and Application of Combined Evaluation Models

Evaluation is a regular and extremely important activity in human society. IT is a fundamental work in decision. Moreover, the choice of evaluation model play a vital role for evaluation results. There are many evaluation models in the current, including some single comprehensive evaluation models and some combined evaluation models. But with the development of society, evaluation object or system is increasingly complex, these models are unable to meet the evaluational need. First,this paper analyzes systemic and summarizes own merits, defects and the application scope of the evaluation model, including AHP comprehensive evaluation model,gray comprehensive evaluation model,fuzzy comprehensive evaluation model and neural networks comprehensive evaluation model. On this basis, combined evaluation model based on AHP and neural network is established. At the same time, combined evaluation mode based on AHP and gray theory, combined evaluation model based on AHP .and fuzzy, combined evaluation model based on gray and fuzzy. These combined evaluation models absorbs the merits and overcomed their deficiencies of some single comprehensive evaluation models through the establishment and improvement. These combined evaluation models are scientific and reasonable, evaluation results are reliable and accurate.