Complicated System Factor's Function Analysis and Application

Complicated system usually has many factors that have relation with result.Which is the most important factor,and what is the relation between these factors with result.In this paper these most important factors are found by method of information entropy,then training set is clustered,finally Lagrange interpolation method is used to find the function between important factors and result.In the end of this paper,this method is used in vehicle oil quantity analysis system,and gets satisfying effect.