covariance_structure_of_correlated_random_effects_for_multiple_traits
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covariance_structure_of_correlated_random_effects_for_multiple_traits [2018/03/29 18:40] – created andres | covariance_structure_of_correlated_random_effects_for_multiple_traits [2018/03/29 18:54] – andres | ||
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- | The documentation is bit confusing on how to declare several correlated effects for several traits. Whereas '' | + | The documentation is bit confusing on how to declare several correlated effects for several traits. Whereas '' |
For instance terminal crosses models (e.g. [[https:// | For instance terminal crosses models (e.g. [[https:// | ||
- | * trait_pure: animal | + | * trait_pure: |
- | * trait_crossbred : sire(crossbred) | + | * trait_crossbred : **y = hys s + e** (sire of crossbred) |
- | Imagine that we have two such traits. Data file has " | + | Thus we have two traits, purebred and crossbred performance, |
- | + | < | |
- | ... | + | 1 0 12 cross |
+ | 0 2 25 cross | ||
4 0 3084 cross | 4 0 3084 cross | ||
0 5 3084 cross | 0 5 3084 cross | ||
... | ... | ||
RANDOM_GROUP | RANDOM_GROUP | ||
- | 4 5 | + | 3 4 |
RANDOM_TYPE | RANDOM_TYPE | ||
add_animal | add_animal | ||
Line 20: | Line 21: | ||
../ | ../ | ||
(CO)VARIANCES | (CO)VARIANCES | ||
- | Effect 4 Effect 5 | + | 10 0 0 5 |
- | Trait 1 Trait2 Trait1 Trait2 | + | 0 0 0 0 |
- | Effect 4 Trait 1 Var(u) 0 0 Cov(u,s) | + | 5 0 0 12 |
- | Trait2 0 0 0 0 | + | </ |
- | Effect | + | |
- | Trait2 Cov(s, | + | |
+ | Where we have a 4x4 matrix for covariances. In fact this corresponds to | ||
+ | ^ ^ ^Effect 3^Effect 3^Effect 4^Effect 4| | ||
+ | ^ ^ ^Trait 1 ^Trait2^Trait1 ^Trait2| | ||
+ | ^Effect 3^Trait 1|Var(u)| | ||
+ | ^Effect 3^Trait 2 |0 | 0 | 0| 0| | ||
+ | ^Effect 4^Trait 1|0 | 0 | 0| 0| | ||
+ | ^Effect 4^Trait 2|Cov(s, |
covariance_structure_of_correlated_random_effects_for_multiple_traits.txt · Last modified: 2024/03/25 18:22 by 127.0.0.1