matrixL2: The matrix representing prior belief for matrixZ2
Description
The binary matrix of prior information
about drug-pathway associations. Dim(matrixL2)=G2*K.
For example, matrixL2[g,k]=1 indicates that the g-th drug is known
to be associated with the k-th pathway. This information
can come from some well-known database, such as KEGG pathway database.format
The format is:
num [1:30, 1:10] 0 0 1 0 1 0 0 0 0 0 ...