I got an error when trying to launch both multi-class or binary classifications using xgboost:
multiprocessing.pool.RemoteTraceback:
"""
Traceback (most recent call last):
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/multiprocessing/pool.py", line 121, in worker
result = (True, func(*args, **kwds))
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/multiprocessing/pool.py", line 44, in mapstar
return list(map(*args))
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/neuropredict/rhst.py", line 624, in holdout_trial_compare_datasets
feat_select_method=feat_select_method)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/neuropredict/rhst.py", line 102, in eval_optimized_model_on_testset
param_grid, train_perc)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/neuropredict/rhst.py", line 194, in optimize_pipeline_via_grid_search_CV
gs.fit(train_data_mat, train_labels)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/sklearn/model_selection/_search.py", line 688, in fit
self._run_search(evaluate_candidates)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/sklearn/model_selection/_search.py", line 1149, in _run_search
evaluate_candidates(ParameterGrid(self.param_grid))
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/sklearn/model_selection/_search.py", line 667, in evaluate_candidates
cv.split(X, y, groups)))
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/joblib/parallel.py", line 1003, in __call__
if self.dispatch_one_batch(iterator):
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/joblib/parallel.py", line 834, in dispatch_one_batch
self._dispatch(tasks)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/joblib/parallel.py", line 753, in _dispatch
job = self._backend.apply_async(batch, callback=cb)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/joblib/_parallel_backends.py", line 201, in apply_async
result = ImmediateResult(func)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/joblib/_parallel_backends.py", line 582, in __init__
self.results = batch()
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/joblib/parallel.py", line 256, in __call__
for func, args, kwargs in self.items]
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/joblib/parallel.py", line 256, in <listcomp>
for func, args, kwargs in self.items]
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/sklearn/model_selection/_validation.py", line 516, in _fit_and_score
estimator.fit(X_train, y_train, **fit_params)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/sklearn/pipeline.py", line 356, in fit
self._final_estimator.fit(Xt, y, **fit_params)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/xgboost/sklearn.py", line 732, in fit
callbacks=callbacks)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/xgboost/training.py", line 216, in train
xgb_model=xgb_model, callbacks=callbacks)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/xgboost/training.py", line 74, in _train_internal
bst.update(dtrain, i, obj)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/xgboost/core.py", line 1109, in update
dtrain.handle))
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/xgboost/core.py", line 176, in _check_call
raise XGBoostError(py_str(_LIB.XGBGetLastError()))
xgboost.core.XGBoostError: Invalid Parameter format for num_feature expect int (non-negative) but value='sqrt'
"""
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/bin/neuropredict", line 8, in <module>
sys.exit(main())
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/neuropredict/__main__.py", line 11, in main
run_workflow.cli()
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/neuropredict/run_workflow.py", line 976, in cli
grid_search_level, classifier, feat_select_method)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/neuropredict/run_workflow.py", line 951, in prepare_and_run
options_path=options_path)
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/site-packages/neuropredict/rhst.py", line 382, in run
cv_results = pool.map(partial_func_holdout, range(num_repetitions))
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/multiprocessing/pool.py", line 268, in map
return self._map_async(func, iterable, mapstar, chunksize).get()
File "/homes_unix/mvanhoutte/Soft/anaconda3/envs/neuropredict/lib/python3.7/multiprocessing/pool.py", line 657, in get
raise self._value
xgboost.core.XGBoostError: Invalid Parameter format for num_feature expect int (non-negative) but value='sqrt'