Mateusz (Matthew)

> Hence if one loss goes to zero, it's failure mode (no more learning happens). I wouldn't say that no more learning happens. For instance: let's say that at the...

Thanks for the response. > Can you try with master? Older versions didn't properly handle pandas / numpy objects passed to train, but I think that's fixed now. Okay, I've...

Hah, glad to read this! Thank you.

I don't know if it works for you, but you might be interested in the original [xgboost's external memory API](https://xgboost.readthedocs.io/en/latest/tutorials/external_memory.html?highlight=external%20memory). I've ended up searching hyperparameters with [hyperopt](http://hyperopt.github.io/hyperopt/), training on large...