How to add strata to cox Regularized Cox Regression?

[hippo-yf]

Hello,
How to add strata (different hazard baseline) to survival regression in Task TskSurv with learner surv.cv_glmnet ? In original glmnet package, stratifySurv is used to add strata. But , in mlr3proba, I do not find the setting. Thanks.

[bblodfon]

Hi @hippo-yf,

Thanks for mentioning this, I think it can be done, so transfering to mlr3extralearners (but it's going to be glmnet-specific).
See issue here => mlr-org/mlr3extralearners#396.