摘要
提出一种改进的阻尼型高斯 牛顿优化算法 ,通过引入阻尼矩阵 ,对反演参数依其相对修改量不同而给以不同的阻尼作用 。
Gauss-Newton optimization technique is a method with less computation time and rapid convergence speed, but it requires better initial conditions. It is a tickler to lose its role or to bring about local-extreme-value problems. Under the circumstances, an improved damping form of Gauss-Newton optimization technique is presented to avoid these problems. By using the diagonal damping matrix, the damping role will be changed according to the relative modified amounts of the inversion parameters. The good effect is obtained when this approach is used in the inversion problem of the high frequency electromagnetic wave logging.
出处
《计算物理》
CSCD
北大核心
2002年第2期155-158,共4页
Chinese Journal of Computational Physics
基金
国家自然科学基金资助
编号为 497742 41
