摘要
林业野外调查数据中经常混有异常数据,所以在林业回归分析中应用稳健回归的方法将是很有效而且很必要的。文章对稳健回归的主要方法进行了简单介绍,然后针对稳健回归计算复杂、计算量大的问题,提出了直观、简单,易于被林业工作者接受的计算机图解法,用图解法确定稳健一元回归的初值和诊断异常点,方法简单,结果满意。
In forest regression analysis the robust regression would be a very useful and important technique because outliers very often occur among forest field data.A short summary of some main robust regression methods is provided and then a visual and simple method of determining the initial value of the simple robust regression and detecting outliers by the computer graphic method is proposed in this paper.This method may be easily received by foresters because it is much easier as compared with the common robust regression.An example of application to forestry shows that the robust regression is useful and the graphic method can produce satisfactory result.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1996年第3期78-83,共6页
Journal of Northeast Forestry University
