133 lines
4.2 KiB
Python
133 lines
4.2 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Created on Wed May 18 06:03:24 2022
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@author: tanu
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"""
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#%% RandomForest + hyperparam: BaseEstimator: ClfSwitcher()
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class ClfSwitcher(BaseEstimator):
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def __init__(
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self,
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estimator = SGDClassifier(),
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):
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"""
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A Custom BaseEstimator that can switch between classifiers.
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:param estimator: sklearn object - The classifier
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"""
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self.estimator = estimator
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def fit(self, X, y=None, **kwargs):
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self.estimator.fit(X, y)
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return self
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def predict(self, X, y=None):
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return self.estimator.predict(X)
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def predict_proba(self, X):
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return self.estimator.predict_proba(X)
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def score(self, X, y):
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return self.estimator.score(X, y)
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parameters = [
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{
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'clf__estimator': [AdaBoostClassifier(**rs)]
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, 'clf__estimator__n_estimators': [none, 1, 2]
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, 'clf__estimator__base_estiamtor' : ['None', 1*SVC(), 1*KNeighborsClassifier()]
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#, 'clf__estimator___splitter' : ["best", "random"]
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}
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]
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# Create pipeline
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pipeline = Pipeline([
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('pre', MinMaxScaler()),
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('clf', ClfSwitcher()),
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])
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# Grid search i.e hyperparameter tuning and refitting on mcc
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gscv_abc = GridSearchCV(pipeline
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, parameters
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#, scoring = 'f1', refit = 'f1'
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, scoring = mcc_score_fn, refit = 'mcc'
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, cv = skf_cv
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, **njobs
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, return_train_score = False
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, verbose = 3)
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# Fit
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gscv_abc_fit = gscv_abc.fit(X, y)
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gscv_abc_fit_be_mod = gscv_abc_fit.best_params_
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gscv_abc_fit_be_res = gscv_abc_fit.cv_results_
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print('Best model:\n', gscv_abc_fit_be_mod)
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print('Best models score:\n', gscv_abc_fit.best_score_, ':' , round(gscv_abc_fit.best_score_, 2))
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print('\nMean test score from fit results:', round(mean(gscv_abc_fit_be_re['mean_test_mcc']),2))
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print('\nMean test score from fit results:', round(np.nanmean(gscv_abc_fit_be_res['mean_test_mcc']),2))
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######################################
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# Blind test
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######################################
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# See how it does on the BLIND test
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#print('\nBlind test score, mcc:', )
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test_predict = gscv_abc_fit.predict(X_bts)
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print(test_predict)
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print(np.array(y_bts))
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y_btsf = np.array(y_bts)
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print(accuracy_score(y_btsf, test_predict))
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print(matthews_corrcoef(y_btsf, test_predict))
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# create a dict with all scores
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abc_bts_dict = {#'best_model': list(gscv_abc_fit_be_mod.items())
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'bts_fscore' : None
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, 'bts_mcc' : None
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, 'bts_precision': None
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, 'bts_recall' : None
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, 'bts_accuracy' : None
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, 'bts_roc_auc' : None
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, 'bts_jaccard' : None }
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abc_bts_dict
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abc_bts_dict['bts_fscore'] = round(f1_score(y_bts, test_predict),2)
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abc_bts_dict['bts_mcc'] = round(matthews_corrcoef(y_bts, test_predict),2)
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abc_bts_dict['bts_precision'] = round(precision_score(y_bts, test_predict),2)
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abc_bts_dict['bts_recall'] = round(recall_score(y_bts, test_predict),2)
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abc_bts_dict['bts_accuracy'] = round(accuracy_score(y_bts, test_predict),2)
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abc_bts_dict['bts_roc_auc'] = round(roc_auc_score(y_bts, test_predict),2)
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abc_bts_dict['bts_jaccard'] = round(jaccard_score(y_bts, test_predict),2)
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abc_bts_dict
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# Create a df from dict with all scores
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pd.DataFrame.from_dict(abc_bts_dict, orient = 'index', columns = 'best_model')
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abc_bts_df = pd.DataFrame.from_dict(abc_bts_dict,orient = 'index')
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abc_bts_df.columns = ['Logistic_Regression']
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print(abc_bts_df)
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# Create df with best model params
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model_params = pd.Series(['best_model_params', list(gscv_abc_fit_be_mod.items() )])
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model_params_df = model_params.to_frame()
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model_params_df
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model_params_df.columns = ['Logistic_Regression']
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model_params_df.columns
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# Combine the df of scores and the best model params
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abc_bts_df.columns
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abc_output = pd.concat([model_params_df, abc_bts_df], axis = 0)
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abc_output
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# Format the combined df
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# Drop the best_model_params row from abc_output
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abc_df = abc_output.drop([0], axis = 0)
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abc_df
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#FIXME: tidy the index of the formatted df
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###############################################################################
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