A simple method for weighted bending of genetic (co)variance matrices.

@article{Jorjani2003ASM,
  title={A simple method for weighted bending of genetic (co)variance matrices.},
  author={Hossein Jorjani and Lambertus Klei and Ulf Emanuelson},
  journal={Journal of dairy science},
  year={2003},
  volume={86 2},
  pages={677-9}
}
Due to computational demand, elements of genetic correlation matrices may have been estimated separately and then combined together into a single correlation matrix at a later stage. Because these matrices should be positive definite (PD) a statistical method commonly known as "bending" is used to make them positive definite. The conventional bending method ignores the reliability of different correlations and may subject any of them to change in order to make a positive definite correlation… CONTINUE READING