# ADMIXTURE

## Description

ADMIXTURE is a software tool for maximum likelihood estimation of individual ancestries from multilocus SNP genotype datasets. It uses the same statistical model as STRUCTURE but calculates estimates much more rapidly using a fast numerical optimization algorithm.

Specifically, ADMIXTURE uses a block relaxation approach to alternately update allele frequency and ancestry fraction parameters. Each block update is handled by solving a large number of independent convex optimization problems, which are tackled using a fast sequential quadratic programming algorithm. Convergence of the algorithm is accelerated using a novel quasi-Newton acceleration method. The algorithm outperforms EM algorithms and MCMC sampling methods by a wide margin.

## Environment Modules

Run `module spider ADMIXTURE`

to find out what environment modules are available for this application.

## System Variables

- HPC_ADMIXTURE_DIR - installation directory

## Citation

If you publish research that uses ADMIXTURE you have to cite it as follows: