R Session aborted

[naggefreschle]

In R Studio I receive the notification "R Session Aborted" when runnung ContentBased()
Additionally it shows:

Error in .ContentBased(inputs$processed_X, inputs$processed_U, inputs$processed_I, :
BLAS/LAPACK routine 'DLASCLS' gave error code -4

dim(X): 6043 2416
dim(U): 6038 4
dim(I): 2416 13

[david-cortes]

Thanks for the bug report. Will fix this soon, but in the meantime: calling ContentBased requires having the same number of rows in X and U, without padding either with NAs to accommodate the other.

[david-cortes]

Now it should (a) avoid aborting the R session when something like this fails; (b) throw an informative message if the data is not suitable for default option start_with_ALS=TRUE.

To install the latest version from github:

remotes::install_github("david-cortes/cmfrec")

[naggefreschle]

I already saw the problem with different dimensions and fixed it.
I still receive the error about DLASCLS. Where is this coming from?
Rstudio is not aborting anymore

[david-cortes]

Thanks for the update. I've now expanded a bit the docs to add that option start_with_ALS=TRUE can lead to errors like this. If you are observing this error, you might probably need to pass start_with_ALS=FALSE and increase the number of iterations (maxiter), although it might be a symptom that there is something wrong with your data (e.g. empty or duplicate users/items).