2 Commits

Author SHA1 Message Date
Philip Hyunsu Cho
677f676172
Use UserWarning for old callback, as DeprecationWarning is not visible (#6270) 2020-10-22 01:10:52 -07:00
Jiaming Yuan
ab5b35134f
Rework Python callback functions. (#6199)
* Define a new callback interface for Python.
* Deprecate the old callbacks.
* Enable early stopping on dask.
2020-10-10 17:52:36 +08:00