https://bashtage.github.io/linearmodels/devel/iv/iv/linearmodels.iv.gmm.HomoskedasticWeightMatrix.weight_matrix.html
linearmodels.iv.gmm.HomoskedasticWeightMatrix.weight_matrix - linearmodels 7.1
weight matrixgmm
https://latentpatterns.com/glossary/attention-weight-matrix
Attention Weight Matrix — Glossary — Latent Patterns
A matrix where each entry represents how much one position attends to another, with rows forming probability distributions over the input sequence.
weight matrixattentionglossarylatentpatterns