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wombat:specialanalyses [2018/08/30] kmeyer ["Single step" genomic BLUP] |
wombat:specialanalyses [2025/11/12] (current) kmeyer ["Single step" genomic BLUP] |
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| * Iterative solutions are obtained using a pre-conditioned conjugate gradient algorithm with a choice of diagonal, block-diagonal of SSOR (default) preconditioning scheme. | * Iterative solutions are obtained using a pre-conditioned conjugate gradient algorithm with a choice of diagonal, block-diagonal of SSOR (default) preconditioning scheme. | ||
| - A low RAM alternative is invoked via run option ''----s2step'': This employs a PCG algorithm with diagonal preconditioner, using 'iteration on data' instead of in-core storage of the mixed model equations. \\ It requires pedigree information (to set up the inverse of the numerator relationship matrix) and the 'add-on' part in the combined relationship matrix, $ {\bf G}^{-1} - {\bf A}_{22}^{-1}$ as a ''*.gin'' file. | - A low RAM alternative is invoked via run option ''----s2step'': This employs a PCG algorithm with diagonal preconditioner, using 'iteration on data' instead of in-core storage of the mixed model equations. \\ It requires pedigree information (to set up the inverse of the numerator relationship matrix) and the 'add-on' part in the combined relationship matrix, $ {\bf G}^{-1} - {\bf A}_{22}^{-1}$ as a ''*.gin'' file. | ||
| - | - Work in progress: An implementation of the `super hybrid model' | + | - Not operational: An implementation of the `super hybrid model' |
| ==== Genomic relationship matrices ==== | ==== Genomic relationship matrices ==== | ||
