Posts

Factor analysis from scratch: theory and code

In this post, I am going to derive some mathematical results of the latent factor model (a.k.a factor analysis) and then implement it from scratch, comparing it with a known…

Analyzing the parameters of a linear model under the centering and scaling of the response variable

People transform the response variable for various reasons. In this post, we are going to analyze what happens to the parameters of the linear model, that is, the regression…

Comparing BGLR and asreml to fit GBLUP models in single and multi-environment trials

Mostly, I have been using the package asreml (The VSNi Team 2023) for fitting genomic prediction models. This year I started to read some papers about fitting GBLUP models.…