Compute the condensed identity coefficients for pairs of individuals (Kan Lange’s book Mathematical and Statistical Methods for Genetic Analysis 2002 has a good description of identity coefficients).

This software uses a novel graphical algorithm to compute generalized kinship coefficients for four genes. This algorithm avoids having to do many recursions through the pedigree by instead doing a traversal through the kinship graph of those genes.

Downloads

The source code is written in ISO C and should compile on any platform with a compliant compiler. See the README file for instructions on compiling and usage. An example problem is included with the source code download.

Na Li has written an R packagehttp://cran.r-project.org/web/packages/identity/index.html pack based on this code. I have not tested it and cannot vouch for it and mention it here only for informational purposes.

Citation

A manuscript is currently under review. Contact me if you would like a copy (abney at uchicago edu)