run xgbranker_example error

[lzhw520110]

win7 py2.7 xgboost 0.7
when run xgbranker_example, I get error as this


I add 'n_jobs' and 'random_state' to class XGBRanker.init(), This error dispeared, but I get a new error as this

Traceback (most recent call last):
File "", line 1, in
dtrain.handle))
File "C:\Users\Lenovo\Anaconda2\lib\site-packages\xgboost-0.7-py2.7.egg\xgboost\core.py", line 130, in _check_call
raise XGBoostError(_LIB.XGBGetLastError())
xgboost.core.XGBoostError: Invalid Parameter format for seed expect int but value='None'

When I set seed=0 in class XGBRanker.init() and run xgbranker_example again, get a new error as this:

[11:10:29] dmlc-core/include/dmlc/./logging.h:300: [11:10:29] src/tree/updater_colmaker.cc:657: Check failed: param.colsample_bylevel > 0U (0 vs. 0) colsample_bylevel cannot be zero.
Traceback (most recent call last):
File "", line 1, in
xgb_model=xgb_model, callbacks=callbacks)
File "C:\Users\Lenovo\Anaconda2\lib\site-packages\xgboost-0.7-py2.7.egg\xgboost\training.py", line 74, in _train_internal
bst.update(dtrain, i, obj)
File "C:\Users\Lenovo\Anaconda2\lib\site-packages\xgboost-0.7-py2.7.egg\xgboost\core.py", line 898, in update
dtrain.handle))
File "C:\Users\Lenovo\Anaconda2\lib\site-packages\xgboost-0.7-py2.7.egg\xgboost\core.py", line 130, in _check_call
raise XGBoostError(_LIB.XGBGetLastError())
xgboost.core.XGBoostError: [11:10:29] src/tree/updater_colmaker.cc:657: Check failed: param.colsample_bylevel > 0U (0 vs. 0) colsample_bylevel cannot be zero.

File "C:\Users\Lenovo\Anaconda2\lib\site-packages\xgboost-0.7-py2.7.egg\xgboost\training.py", line 204, in train
xgb_model=None)
File "C:\Users\Lenovo\Anaconda2\lib\site-packages\xgboost_ranking-0.6.1-py2.7.egg\xgboostextension\xgbranker.py", line 101, in fit
ranker.fit(X, y, [25, 25, 25, 25], eval_metric=['ndcg', 'map@5-'])
File "C:\Users\Lenovo\Anaconda2\lib\site-packages\spyder\utils\site\sitecustomize.py", line 866, in runfile
execfile(filename, namespace)
File "C:\Users\Lenovo\Anaconda2\lib\site-packages\spyder\utils\site\sitecustomize.py", line 87, in execfile
exec(compile(scripttext, filename, 'exec'), glob, loc)
File "D:/0rqalpha/quantOS/xgbRanker/demo.py", line 22, in

I have no idea about this error!

[bigdong89]

I don't know what happened.
But it's obvious that recently xgboost-0.7 is released but I haven't upgrade my package.
Switch your xgboost to 0.6, it will be OK.
I will update it to 0.7 work with new version of xgboost when I'm free.
Good luck!

[FlorisHoogenboom]

I've encounterd the same issue. I've made PR #5 for the upgrade to V0.7.

The reason for the error lies in the fact that the get_xgb_params function uses the init signature to get the parameters. Since this signature has changed in XGBoost v0.7 this error was raised.

[bigdong89]

Thanks, Floris! Codes are merged for 0.7!