In-2021-08-04-all-icsd

../../_images/pareto235.png

The current structure dataset comprises 14246 structures generated from unique ICSD prototype structures composed of single elements with zero oxidation state. A more detailed procedure is found in Phys. Rev. B 99, 214108 (2019). The procedure to estimate interatomic potentials from the dataset is found in Phys. Rev. B 99, 214108 (2019) and Phys. Rev. B 102, 174104 (2020).

Improvement from **-dataset-10000-all-icsd

  • More robust for structures with a small interatomic distance

  • More robust for structures with a large interatomic distance

  • More complex potential models are included.

  • MLPs are estimated without using DFT stress tensors.

  • MLPs are estimated by using small regression weights for energetically unstable structures.

Predictions using Pareto optimal MLPs

../../_images/prediction-ecoh-volume129.png

The cohesive energy and volume are obtained by performing a local structure optimization from the DFT equilibrium structure. In addition, the DFT equilibrium structure is obtained by optimizing a prototype structure included in ICSD, and the prototype is used as the structure legend in the figure. Therefore, the structure type of the converged structure is sometimes different from that shown in the legend even if the potential energy surface predicted by MLP is almost the same as the true one.

The other properties predicted by each Pareto optimal MLP are available from column Predictions in the following table.

Pareto optimals

Name

Time [ms] (1core/36cores)

RMSE [meV/atom]/[eV/A]

Predictions

Files

pair-14

0.017 / 0.038

51.534 / 0.1161

pair-27

0.018 / 0.005

17.701 / 0.0811

pair-28

0.027 / 0.007

15.021 / 0.0693

pair-29

0.039 / 0.009

14.115 / 0.0682

pair-31

0.050 / 0.007

13.021 / 0.0669

pair-32

0.051 / 0.010

10.869 / 0.0641

pair-33

0.069 / 0.012

9.0704 / 0.0618

predictions

mlp.lammps input log

pair-34

0.096 / 0.016

8.8962 / 0.0617

predictions

mlp.lammps input log

pair-35

0.121 / 0.021

8.4444 / 0.0616

predictions

mlp.lammps input log

pair-37

0.136 / 0.018

7.8171 / 0.0592

predictions

mlp.lammps input log

pair-38

0.171 / 0.022

7.5716 / 0.0587

predictions

mlp.lammps input log

gtinv-300

0.228 / 0.023

3.6072 / 0.0269

predictions

mlp.lammps input log

gtinv-235

0.281 / 0.023

3.2171 / 0.0242

predictions

mlp.lammps input log

gtinv-303

0.339 / 0.029

2.5105 / 0.0244

predictions

mlp.lammps input log

gtinv-175

0.376 / 0.031

2.2198 / 0.0220

predictions

mlp.lammps input log

gtinv-240

0.393 / 0.030

2.1441 / 0.0218

predictions

mlp.lammps input log

gtinv-312

0.472 / 0.036

2.0914 / 0.0220

predictions

mlp.lammps input log

gtinv-306

0.507 / 0.041

2.0627 / 0.0240

predictions

mlp.lammps input log

gtinv-180

0.543 / 0.041

1.9657 / 0.0224

predictions

mlp.lammps input log

gtinv-245

0.562 / 0.042

1.9489 / 0.0223

predictions

mlp.lammps input log

gtinv-195

0.748 / 0.053

1.8029 / 0.0195

predictions

mlp.lammps input log

gtinv-260

0.787 / 0.053

1.7494 / 0.0193

predictions

mlp.lammps input log

gtinv-265

0.983 / 0.070

1.6258 / 0.0189

predictions

mlp.lammps input log

gtinv-205

1.307 / 0.088

1.5679 / 0.0192

predictions

mlp.lammps input log

gtinv-270

1.323 / 0.091

1.5189 / 0.0191

predictions

mlp.lammps input log

gtinv-342

1.775 / 0.083

1.3256 / 0.0178

predictions

mlp.lammps input log

gtinv-345

1.915 / 0.092

1.2811 / 0.0182

predictions

mlp.lammps input log

gtinv-343

2.986 / 0.131

1.0780 / 0.0167

predictions

mlp.lammps input log

gtinv-346

3.371 / 0.155

1.0535 / 0.0169

predictions

mlp.lammps input log

gtinv-347

5.540 / 0.290

1.0030 / 0.0163

predictions

mlp.lammps input log

gtinv-299

22.419 / 1.031

1.0018 / 0.0149

predictions

mlp.lammps input log

Column “Time” shows the time required to compute the energy and forces for 1 MD step and 1 atom, which is estimated from a simulation of 10 runs for a structure with 284 atoms using a workstation with Intel(R) Xeon(R) CPU E5-2695 v4 @ 2.10GHz. Note that the MLPs should be carefully used for extreme structures. The MLPs often return meaningless values for them.

  • All Pareto optimal MLPs are available here.