How to tune Fitting/embedding-net size ?
Here are some test forms on fitting-net size tuning or embedding-net size tuning performed on several different systems.
Fitting net size tuning form on Al2O3: (embedding-net size: [25,50,100])
Fitting-net size
Energy L2err(eV)
Energy L2err/Natoms(eV)
Force L2err(eV/Angstrom)
[240,240,240]
1.742252e-02
7.259383e-05
4.014115e-02
[80,80,80]
1.799349e-02
7.497287e-05
4.042977e-02
[40,40,40]
1.799036e-02
7.495984e-05
4.068806e-02
[20,20,20]
1.834032e-02
7.641801e-05
4.094784e-02
[10,10,10]
1.913058e-02
7.971073e-05
4.154775e-02
[5,5,5]
1.932914e-02
8.053808e-05
4.188052e-02
[4,4,4]
1.944832e-02
8.103467e-05
4.217826e-02
[3,3,3]
2.068631e-02
8.619296e-05
4.300497e-02
[2,2,2]
2.267962e-02
9.449840e-05
4.413609e-02
[1,1,1]
2.813596e-02
1.172332e-04
4.781115e-02
[]
3.135002e-02
1.306251e-04
5.373120e-02
[] means no hidden layer, but there is still a linear output layer. This situation is equal to the linear regression.
Embedding net size tuning form on Al2O3: (Fitting-net size: [240,240,240])
Embedding-net size
Energy L2err(eV)
Energy L2err/Natoms(eV)
Force L2err(eV/Angstrom)
[25,50,100]
1.742252e-02
7.259383e-05
4.014115e-02
[10,20,40]
2.909990e-02
1.212496e-04
4.734667e-02
[5,10,20]
3.357767e-02
1.399070e-04
5.706385e-02
[4,8,16]
6.060367e-02
2.525153e-04
7.333304e-02
[3,6,12]
5.656043e-02
2.356685e-04
7.793539e-02
[2,4,8]
5.277023e-02
2.198759e-04
7.459995e-02
[1,2,4]
1.302282e-01
5.426174e-04
9.672238e-02
Fitting net size tuning form on Cu: (embedding-net size: [25,50,100])
Fitting-net size
Energy L2err(eV)
Energy L2err/Natoms(eV)
Force L2err(eV/Angstrom)
[240,240,240]
4.135548e-02
1.615449e-04
8.940946e-02
[20,20,20]
4.323858e-02
1.689007e-04
8.955762e-02
[10,10,10]
4.399364e-02
1.718502e-04
8.962891e-02
[5,5,5]
4.468404e-02
1.745470e-04
8.970111e-02
[4,4,4]
4.463580e-02
1.743586e-04
8.972011e-02
[3,3,3]
4.493758e-02
1.755374e-04
8.971303e-02
[2,2,2]
4.500736e-02
1.758100e-04
8.973878e-02
[1,1,1]
4.542073e-02
1.774247e-04
8.964761e-02
[]
4.545168e-02
1.775456e-04
8.983201e-02
Embedding net size tuning form on Cu: (Fitting-net size: [240,240,240])
Embedding-net size
Energy L2err(eV)
Energy L2err/Natoms(eV)
Force L2err(eV/Angstrom)
[25,50,100]
4.135548e-02
1.615449e-04
8.940946e-02
[20,40,80]
4.203562e-02
1.642016e-04
8.925881e-02
[15,30,60]
4.146672e-02
1.619794e-04
8.936911e-02
[10,20,40]
4.263060e-02
1.665258e-04
8.955818e-02
[5,10,20]
4.994913e-02
1.951138e-04
9.007786e-02
[4,8,16]
1.022157e-01
3.992802e-04
9.532119e-02
[3,6,12]
1.362098e-01
5.320695e-04
1.073860e-01
[2,4,8]
7.061800e-02
2.758515e-04
9.126418e-02
[1,2,4] && seed = 1
9.843161e-02
3.844985e-04
9.348505e-02
[1,2,4] && seed = 2
9.404335e-02
3.673568e-04
9.304089e-02
[1,2,4] && seed = 3
1.508016e-01
5.890688e-04
1.382356e-01
[1,2,4] && seed = 4
9.686949e-02
3.783965e-04
9.294820e-02
Fitting net size tuning form on water: (embedding-net size: [25,50,100])
Fitting-net size
Energy L2err/Natoms(eV)
Force L2err(eV/Angstrom)
[240,240,240]
9.1589E-04
5.1540E-02
[200,200,200]
9.3221E-04
5.2366E-02
[160,160,160]
9.4274E-04
5.3403E-02
[120,120,120]
9.5407E-04
5.3093E-02
[80,80,80]
9.4605E-04
5.3402E-02
[40,40,40]
9.8533E-04
5.5790E-02
[20,20,20]
1.0057E-03
5.8232E-02
[10,10,10]
1.0466E-03
6.2279E-02
[5,5,5]
1.1154E-03
6.7994E-02
[4,4,4]
1.1289E-03
6.9613E-02
[3,3,3]
1.2368E-03
7.9786E-02
[2,2,2]
1.3558E-03
9.7042E-02
[1,1,1]
1.4633E-03
1.1265E-01
[]
1.5193E-03
1.2136E-01
Embedding net size tuning form on water: (Fitting-net size: [240,240,240])
Embedding-net size
Energy L2err/Natoms(eV)
Force L2err(eV/Angstrom)
[25,50,100]
9.1589E-04
5.1540E-02
[20,40,80]
9.5080E-04
5.3593E-02
[15,30,60]
9.7996E-04
5.6338E-02
[10,20,40]
1.0353E-03
6.2776E-02
[5,10,20]
1.1254E-03
7.3195E-02
[4,8,16]
1.2495E-03
8.0371E-02
[3,6,12]
1.3604E-03
9.9883E-02
[2,4,8]
1.4358E-03
9.7389E-02
[1,2,4]
2.1765E-03
1.7276E-01
Fitting net size tuning form on Mg-Al: (embedding-net size: [25,50,100])
Fitting-net size
Energy L2err/Natoms(eV)
Force L2err(eV/Angstrom)
[240,240,240]
3.9606e-03
1.6289e-02
[200,200,200]
3.9449e-03
1.6471e-02
[160,160,160]
4.0947e-03
1.6413e-02
[120,120,120]
3.9234e-03
1.6283e-02
[80,80,80]
3.9758e-03
1.6506e-02
[40,40,40]
3.9142e-03
1.6348e-02
[20,20,20]
4.1302e-03
1.7006e-02
[10,10,10]
4.3433e-03
1.7524e-02
[5,5,5]
5.3154e-03
1.9716e-02
[4,4,4]
5.4210e-03
1.9710e-02
[2,2,2]
6.2667e-03
2.2568e-02
[1,1,1]
7.3676e-03
2.6375e-02
[]
7.3999e-03
2.6097e-02
Embedding net size tuning form on Mg-Al: (Fitting-net size: [240,240,240])
Embedding-net size
Energy L2err/Natoms(eV)
Force L2err(eV/Angstrom)
[25,50,100]
3.9606e-03
1.6289e-02
[20,40,80]
4.0292e-03
1.6555e-02
[15,30,60]
4.1743e-03
1.7026e-02
[10,20,40]
4.8138e-03
1.8516e-02
[5,10,20]
5.6052e-03
2.0709e-02
[4,8,16]
6.1335e-03
2.1450e-02
[3,6,12]
6.6469e-03
2.3003e-02
[2,4,8]
6.8222e-03
2.6318e-02
[1,2,4]
1.0678e-02
3.9559e-02