在生产和科研工作中,经常需要建立变量间的经验公式,用以对生产过程进行控制或预报;进行因素分析,揭示事物内部的规律性;以及为内动控制及优化设计提供目标函数等。例如,进行一组试验之后,我们总希望把指标与影响它的因子间的经验公式找出来。又例如,在生产过程中,积累了大量数据,我们也希望通过分折确定产品的数量或质量指标与生产条件的 In production and scientific research, it is often necessary to establish empirical formulas between variables to control or predict the production process; to conduct factor analysis to reveal the regularity of things; and to provide objective functions for internal control and optimal design. For example, after a series of experiments, we always want to find out the empirical formula between the indicator and the factors that affect it. For another example, in the production process, accumulated a large amount of data, we also hope that through the analysis of the number of products or quality indicators and production conditions