How to set eval metrics for xgboost.train?

Question

How can I set xgboost.train to opitimize for a specific evaluation metric similar to how I can set xgboost.fit(eval_metric = 'auc')?

Answer 1

See the document here. Where you can find metrics xgboost support under eval_metric.

If you want to use a custom objective function or metric see here.