Hi all, The package `spm` has been updated last week, with a bug fixed for the function `gbmcv` that can now be used for 0/1 data. Consequently, the functions such as `stepgbm` in the package `stepgbm` can also be used for 1/0 data. Please let me know if you have any questions. Best regards, -- Jin ------------------------------------------ Jin Li, PhD Founder, Data2action, Australia researchgate.net/profile/Jin_Li32 scholar.google.com/citations?user=Jeot53EAAAAJ&hl=en [[alternative HTML version deleted]]