oganesson 0.1.2

oganesson enables rapid AI workflows for material science and chemistry

Oganesson

oganesson (og for short) is a python package that enables you to apply artificial intelligence workflows to your material discovery projects.

Installation

You can install og using the pip command as follows:

pip install oganesson

Features

og is currently under active development. The following features are currently available.

Machine learning descriptors

og will bring together machine learning descriptors for materials and molecules. At the moment, the three descriptors available are those introduced in this publication.

Each descriptor has its own class, which extends the Descriptors class in the oganesson.descriptors module. Here is an example of how to describe a structure using the BACD and SymmetryFunctions descriptor classes.

from oganesson.descriptors.bacd import BACD
from oganesson.descriptors.symmetry_functions import SymmetryFunctions
from oganesson.ogstructure import OgStructure

bacd = BACD(OgStructure(file_name='examples/structures/mp-541001_LiInI4.cif'))
print(bacd.describe())

sf = SymmetryFunctions(OgStructure(file_name='examples/structures/mp-541001_LiInI4.cif'))
print(sf.describe())

Genetic algorithms

The main purpose of og is to make complex artificial intelligence workflows easy to compose. Here is an example: running a genetic search for structures, where the structure optimization is performed using the M3GNET neural network model.

from oganesson.genetic_algorithms import GA
ga = GA(['Na']*4 + ['H']*4)
for i in range(10):
    ga.evolve()

Generation of the diffusion path for NEB calculations

The most painful part of doing transition state calculations in VASP is in building the images. The following code makes this happen in 2 lines of code. You only need to specify the structure file, and the atomic species you want to diffuse, and OgStructure will generate a folder for each path, and then write the POSCAR image files in each of these folders.

from oganesson.ogstructure import OgStructure
og = OgStructure(file_name='examples/structures/mp-541001_LiInI4.cif')
og.generate_neb('Li')