双向线性回归方法

工程上迫切需要在现场或当前数据较少的情况下,建立高精度和高可靠度的现场经验公式.文中利用当前或现场检测数据与历史或试验室数据存在的共性信息,给出双向线性回归方法.此方法不仅能利用现场检测数据的个性信息,还能有效、合理地使用历史或试验室数据,有效扩大当前或现场数据的样本量,得到高精度的现场经验公式,同时利用该公式还可以得到高置信度的推定结果.将文中方法运用于回弹法检测混凝土强度中,有效解决了现场测强曲线建立问题.

METHOD OF TWO-WAY LINEAR REGRESSION

It is urgent in engineering to build high accuracy and high reliability in-site empirical formula under the lack of in-site or present data. Using the generality information of present or in-site data and history or laboratory data, the two-way linear regression method is put forward. The method not only the personality information of in-site test data is used, but also the histnry or laboratory data is utilized effectively and reasonably. It effectively expands the sample of in-site or present data, so the high accuracy in-site empirical formula is got. Meanwhile, the high confidence of deduced result can be obtained from this empirical fnrmula. This method is used to test concrete strength of building structure, so the question of building in-site strength curve is resolved effectively.