Table 1 The calculated statistical parameters of proposed GPR models.

From: Estimating hydrogen absorption energy on different metal hydrides using Gaussian process regression approach

Model

Group

R2

MRE (%)

MSE

RMSE

STD

GPR (Exponential)

Train data

0.976

2.303

3.130494859

1.7693

1.6724

Test data

0.938

2.253

6.25850367

2.5017

2.4030

Total data

0.969

2.291

3.909998652

2.5017

1.8782

GPR (Matern)

Train data

0.976

2.646

3.409763115

1.8466

1.7033

Test data

0.903

3.895

7.025170203

2.6505

2.4049

Total data

0.965

2.957

4.310727182

2.6505

1.9072

GPR (Squared Exponential)

Train data

0.955

4.136

4.856165672

2.2037

1.8525

Test data

0.940

5.262

10.34689408

3.2167

2.9355

Total data

0.950

4.416

6.224462209

3.2167

2.1691

GPR (Rational Quadratic)

Train data

0.966

3.711

4.844857898

2.2011

1.9656

Test data

0.906

4.588

6.788354588

2.6054

2.2364

Total data

0.957

3.929

5.329179756

2.6054

2.0388

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