def fit(self,train,item_features=None):
        raise NotImplementedError('you should implement fit()')
Returns default configuration options.
dataset/ETHPy150Open Mendeley/mrec/mrec/base_recommender.py/BaseRecommender.fit--crossover with--dataset/ETHPy150Open BrightcoveOS/Diamond/src/collectors/nfacct/nfacct.py/NetfilterAccountingCollector.get_default_config