Attenuation Relationships for the Horizontal Component of Peak Ground Acceleration (PGAH) Using Gene Expression Programing (GEP) and Group Method of Data Handling (GMDH)

Table 2

Values of RMSE, f, R², and SD for the recent studies and present study.

Standard deviation of residuals	Coefficient of determination (R^2)	Fitness function (f)	Root mean square error (RMSE)	Method
0.307	0.77	765.103	0.307	Training results	Present Study (GEP)
0.298	0.79	770.209	0.298	Testing results
0.3024	0.777	767.425	0.303	Training results	Present Study (GMDH)
0.2988	0.788	769.15	0.3	Testing results
0.385	0.689	610.037	0.639	Training results	Sarma and Free [15]
0.388	0.697	607.147	0.647	Testing results
0.396	0.685	645.29	0.549	Training results	Ornthammarath et al. [18]
0.399	0.694	642.508	0.556	Testing results
0.391	0.63	712.277	0.404	Training results	Alavi and Gandomi [21]
0.385	0.668	714.677	0.399	Testing results
0.361	0.697	732.24	0.366	Training results	Kumar et al. [25]
0.359	0.716	733.956	0.362	Testing results
0.308	0.657	760.668	0.315	Training results	Javan-Emrooz et al. [26]
0.306	0.658	760.52	0.314	Testing results
0.27	0.496	685.5	0.4	Training results	Abdelfattah et al. [30]
0.267	0.502	683.7	0.46	Testing results