Graph BWT is an independent implementation of the graph extension (gPBWT) of the positional Burrows-Wheeler transform (PBWT). Its initial purpose is to embed observed haplotypes in a variation graph. Haplotypes are essentially sequences of nodes in the variation graph, and GBWT is best seen as the multi-string BWT of the node sequences.
The implementation uses Succinct Data Structures Library 2.0 (SDSL). To compile, set SDSL_DIR in the Makefile to point to your SDSL directory. As the implementation uses C++11, OpenMP, and libstdc++ parallel mode, you need g++ 4.7 or newer to compile.
See the wiki for further documentation.
Richard Durbin: Efficient haplotype matching and storage using the Positional Burrows-Wheeler Transform (PBWT). Bioinformatics 30(9):1266-1272, 2014. DOI: 10.1093/bioinformatics/btu014
Adam M. Novak, Erik Garrison, and Benedict Paten: A graph extension of the positional Burrows-Wheeler transform and its applications. Algorithms for Molecular Biology 12:18, 2017. DOI: 10.1186/s13015-017-0109-9