RT Journal T1 Determination of effective stress parameter of unsaturated soils: A Gaussian process regression approach A1 Pijush Samui, Jagan J PB Front. Struct. Civ. Eng. FD 2013-06-05 YR 2013 JF Frontiers of Structural and Civil Engineering JO Front. Struct. Civ. Eng. VO 7 IS 2 SP 133 DO 10.1007/s11709-013-0202-1 K1 unsaturated soil;effective stress parameter;Gaussian process regression (GPR);artificial neural network (ANN);variance LK {https://journal.hep.com.cn/fsce/EN/article/article_5024.shtml}