This will serve as another form of representing their internal mechanism . this is a kind of modeling by learning from observation data , which is one of the basic important tasks for researchers 這時,根據(jù)采集研究對象的觀測數(shù)據(jù)建立模型,用以對自變量和因變量之間的定量關系作出預測,是科學工作者重要的基礎性工作之一。