no support for LGBMRegressor

[buus2]

Hi,
Although LightGBM is officially supported, in a Jupyter notebook for

lgb_model = lgb.LGBMRegressor()
lgb_model.fit(X, Y)
eli5.explain_weights(lgb_model)

I obtain

Error: estimator LGBMRegressor(boosting_type='gbdt', class_weight=None, colsample_bytree=1.0,
importance_type='split', learning_rate=0.1, max_depth=-1, min_child_samples=20,
min_child_weight=0.001, min_split_gain=0.0, n_estimators=100, n_jobs=-1, num_leaves=31,
objective=None, random_state=12, reg_alpha=0.0, reg_lambda=0.0, silent=True, subsample=1.0,
subsample_for_bin=200000, subsample_freq=0) is not supported

I use LightGBM 2.2.1, eli5 0.8.
@lopuhin What to do?

[buus2]

@kmike @lopuhin Friendly reminder about the issue I posted.

[lopuhin]

@buus2 at first I thought that this due to missing support for lightgmb booster (which is being fixed in #270), but now I see that you are using scikit-learn API and this should work (and is tested on Travis), it is supported here:

eli5/eli5/lightgbm.py

Line 22 in 7218e0d

@explain_weights.register(lightgbm.LGBMRegressor)

So I'm not sure how can it happen so far... I checked Travis build and it's using exactly the same version lightgbm==2.2.1: https://travis-ci.org/TeamHG-Memex/eli5/jobs/451009709#L770 and here is the test:

eli5/tests/test_lightgbm.py

Lines 50 to 52 in 7218e0d

	def test_explain_weights_regressor(boston_train):
	reg = LGBMRegressor()
	_check_rf_regressor(reg, boston_train)

Which python version do you use?

[buus2]

I have just tried again and this time it worked perfectly… My current setup is:
Ubuntu 18.04
Python 3.6.6
JupyterLab 0.34.8
LightGBM 2.2.1
eli5 0.8
The apt logs say that during last 3 weeks (after 2018-10-26) I updated Ubuntu and Python:
https://pastebin.com/hVdSAjt7
JupyterLab, LightGBM and eli5 are the same like they were when I opened this thread.

Anyway, since now it works, I think we may close this discussion. Sorry for bothering you and thank you for the nice tool you provide.

[lopuhin]

Thanks for persistence and for your kind words @buus2 ! 👍 Closing this.