---
configs:
- config_name: default
  data_files: "co/*.parquet"
- config_name: info
  data_files: "ds.parquet"
license: cc-by-4.0
tags:
- molecular dynamics
- mlip
- interatomic potential
pretty_name: sAlex train
---
### <details><summary>Cite this dataset </summary>Barroso-Luque, L., Shuaibi, M., Fu, X., Wood, B. M., Dzamba, M., Gao, M., Rizvi, A., Zitnick, C. L., and Ulissi, Z. W. _sAlex train_. ColabFit, 2025. https://doi.org/10.60732/efbb7935</details>  
#### This dataset has been curated and formatted for the ColabFit Exchange  
#### This dataset is also available on the ColabFit Exchange:  
https://materials.colabfit.org/id/DS_gxjhn6vdjnxg_0  
#### Visit the ColabFit Exchange to search additional datasets by author, description, element content and more.  
https://materials.colabfit.org
<br><hr>  
# Dataset  Name  
sAlex train  
### Description  
The training split of sAlex. sAlex is a subsample of the Alexandria dataset that was used to fine tune the OMat24 (Open Materials 2024) models. From the site: sAlex was created by removing structures matched in WBM and only sampling structure along a trajectory with an energy difference greater than 10 meV/atom.  
### Dataset authors  
Luis Barroso-Luque, Muhammed Shuaibi, Xiang Fu, Brandon M. Wood, Misko Dzamba, Meng Gao, Ammar Rizvi, C. Lawrence Zitnick, Zachary W. Ulissi  
### Publication  
https://doi.org/10.48550/arXiv.2410.12771  
### Original data link  
https://fair-chem.github.io/inorganic_materials/datasets/omat24.html  
### License  
CC-BY-4.0  
### Number of unique molecular configurations  
10345613  
### Number of atoms  
106888622  
### Elements included  
Ac, Ag, Al, Ar, As, Au, B, Ba, Be, Bi, Br, C, Ca, Cd, Ce, Cl, Co, Cr, Cs, Cu, Dy, Er, Eu, F, Fe, Ga, Gd, Ge, H, He, Hf, Hg, Ho, I, In, Ir, K, Kr, La, Li, Lu, Mg, Mn, Mo, N, Na, Nb, Nd, Ne, Ni, Np, O, Os, P, Pa, Pb, Pd, Pm, Pr, Pt, Pu, Rb, Re, Rh, Ru, S, Sb, Sc, Se, Si, Sm, Sn, Sr, Ta, Tb, Tc, Te, Th, Ti, Tl, Tm, U, V, W, Xe, Y, Yb, Zn, Zr  
### Properties included  
energy, atomic forces, cauchy stress  
<br>
<hr>  

# Usage  
- `ds.parquet` : Aggregated dataset information.  
- `co/` directory: Configuration rows each include a structure, calculated properties, and metadata.  
- `cs/` directory : Configuration sets are subsets of configurations grouped by some common characteristic. If `cs/` does not exist, no configurations sets have been defined for this dataset.  
- `cs_co_map/` directory : The mapping of configurations to configuration sets (if defined).  
<br>
#### ColabFit Exchange documentation includes descriptions of content and example code for parsing parquet files:  
- [Parquet parsing: example code](https://materials.colabfit.org/docs/how_to_use_parquet)  
- [Dataset info schema](https://materials.colabfit.org/docs/dataset_schema)  
- [Configuration schema](https://materials.colabfit.org/docs/configuration_schema)  
- [Configuration set schema](https://materials.colabfit.org/docs/configuration_set_schema)  
- [Configuration set to configuration mapping schema](https://materials.colabfit.org/docs/cs_co_mapping_schema)