This study develops a least absolute shrinkage selection operator (lasso) for realistic three-dimensional (3D) geotechnical problems. We propose a lasso-based method specialized for subsurface modeling considering the difference between the vertical and horizontal correlations of soil properties. The straightforward computational implementation of this geotechnical lasso (GLasso) is not feasible in 3D problems because of significant runtime and memory exceedance. To address this problem, we propose an efficient implementation of the alternating direction method of multipliers (ADMM). GLasso and the efficient ADMM (eADMM) were applied to a real case study of subsurface modeling to demonstrate their performance in geotechnical practice.

这项研究为现实的三维（3D）岩土技术问题开发了最小绝对收缩选择算子（lasso）。考虑土壤性质的垂直和水平相关性之间的差异，我们提出了一种基于套索的方法专门用于地下建模。由于存在明显的运行时间和内存问题，这种岩土工程套索（GLasso）的直接计算实现在3D问题中不可行。为了解决这个问题，我们提出了乘法器交替方向方法（ADMM）的有效实现。GLasso和有效的ADMM（eADMM）被应用于地下建模的真实案例研究，以证明其在岩土工程实践中的性能。