dtm_train_tfidf is a sparse matrix in CSC format dgCMatrix
I am using the function LiblineaR which is supposed to accept sparse matrices. However when I use the sparse matrix dtm_train_tfidf, the following error occurs:
library(LiblineaR)
LiblineaR(data=dtm_train_tfidf,
target=train$setiment, type = 4, cost = 1, epsilon = 0.1,
+ svr_eps = NULL, bias = 1, cross = 0, verbose = FALSE,
+ findC = FALSE)
Error in t.default(data) : argument is not a matrix
LiblineaR
relies on SparseM package which is not mainstream now-days for sparse matrices in R. You can check here on how convertdgCMatrix
to "matrix.csc" fromSparseM
.