An example data set of a simulated 200x200 Beta matrix. It consists of 10 row block groups each containing 20 rows and 10 column blocks each containing 20 columns.
The format is: a matrix of dimension 200x200.
Yanming Li, Bin Nan, Ji Zhu
Y. Li, B. Nan and J. Zhu (2015) Multivariate sparse group lasso for the multivariate multiple linear regression with an arbitrary group structure. Biometrics. DOI: 10.1111/biom.12292