Gray System Prediction Model And Improvement In The Cash Flow Projections

Gray System Theory is a new method, which has been used to research uncertain problem lack of data and information. Through researching information which we have known, we can get what we need. Gray System Theory can be used to study uncertain or a few swatch or deficient information system, some of its information is known and some is unknown. Grey System Theory has been used widely. This paper analyzes the birth, development and research contents of Gray System Theory. After this ,based on analyzing the advantage and shortcoming of several kinds models of Gray System Theory, the paper researches some improved methods in four directions. Expect to settle the actual problem better. Then apply actual data to these models, and to test the property of the improved models .In fact, the improved models are better than original model through testing.