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The software, Efficient Local Ancestry Inference (ELAI), is developed and maintained by Yongtao Guan. Please refer to the paper for the details of the statistical method (http://www.ncbi.nlm.nih.gov/pubmed/24388880). ELAI has the following advantages:

1. Can directly works with diploid data, wiht no phasing required; Can also work we phased haplotypes.
2. No recombination map is required and the recombination rates are implicitly estimated.
3. Can detect local ancestry track length of a few tenth of a centi-Morgan.
4. The new version assign weights to training and cohort samples so that ELAI can work with an arbitrarily large number of cohort samples, and allow absent of one training population (http://www.ncbi.nlm.nih.gov/pubmed/26863142).

Exectuables last compiled on 26 May 2021.

elai-mac was last compiled on MacOS Big Sur (version 11.3).
elai-lin was last compiled on Ubuntu 18.04. 

ELAI with multi-threading, elai-mt, for linux was last compiled on 31 March 2024, and can be downloaded here https://github.com/haplotype/ELAI/blob/main/elai-linux-multi-threading.tar.gz.