A Comparative Study of Soft Computing Models for Prediction of Permeability Coefficient of Soil

Table 1

Statistical analysis of the inputs and outputs in this study.

Parameters	Notations	Unit	Minimum	Maximum	Average	Std
Natural water content	w	%	15.1	99.9	34.23	16.5
Void ratio	e	—	0.46	2.63	0.97	0.42
Specific density	γ	g/cm^3	2.58	2.74	2.68	0.02
Liquid limit	LL	%	18.9	88.93	37.27	13.04
Plastic limit	PL	%	12.2	54.8	22.21	7.04
Clay content		%	5.7	64	25.17	11.5
Permeability coefficient	K	10^−9 cm/s	0.3	7.1	1.45	0.94

Standard deviation.