def main():
log.info('********New program instance started********')
#-------------Load Environment----------------------#
#Get program settings and model settings from SETTINGS.json file in root directory
settings, model_settings = utils.load_settings()
#If not using cached data, then load raw data, clean/munge it, create hand-crafted features, slice it for CV
if settings['use_cached_data'] == 'y':
log.info('==========LOADING CACHED FEATURES===========')
dfTrn = data_io.load_cached_object('dfTrn')
dfTest = data_io.load_cached_object('dfTest')
dfCV = data_io.load_flatfile_to_df('Data/CV.csv')
else:
#-------Data Loading/Cleaning/Munging------------#
#Load the data
log.info('===============LOADING DATA=================')
dfTrn = data_io.load_flatfile_to_df(settings['file_data_train'])
dfTest = data_io.load_flatfile_to_df(settings['file_data_test'])
dfCV = data_io.load_flatfile_to_df('Data/CV.csv')
#Clean/Munge the data
log.info('=======CLEANING AND MUNGING DATA============')
dfTrn = munge.clean(dfTrn)
dfTest = munge.clean(dfTest)
#-------Feature creation-------------------------#
#Add all currently used hand crafted features to dataframes
log.info('====CREATING HAND-CRAFTED DATA FEATURES=====')
features.add(dfTrn)
features.add(dfTest)
#---------Data slicing/parsing--------------------------#
#Split data for CV
if settings['generate_cv_score'] == 'y':
log.info('=====SPLITTING DATA FOR CROSS-VALIDATION====')
if settings['cv_method'] == 'april':
dfTrnCV, dfTestCV = munge.temporal_split(dfTrn, (2013, 04, 1))
elif settings['cv_method'] == 'march':
#take an addtional week from February b/c of lack of remote_api source issues in March
dfTrnCV, dfTestCV = munge.temporal_split(dfTrn, (2013, 02, 21))
elif settings['cv_method'] == 'list_split':
#load stored list of data points and use those for CV
dfCVlist = pd.DataFrame({'id': data_io.load_cached_object('Cache/cv_issue_ids.pkl'), 'dummy': 0})
dfTrnCV, dfTestCV = munge.list_split(dfTrn, dfCVlist)
#--------------Modeling-------------------------#
#If cached models exist then load them for reuse into segment_models. Then run through model_settings and for
# each model where 'use_cached_model' is false then clear the cached model and recreate it fresh
log.info('=========LOADING CACHED MODELS==============')
segment_models = data_io.load_cached_object('segment_models')
if segment_models == None:
log.info('=========CACHED MODELS NOT LOADED===========')
for model in model_settings:
model['use_cached_model'] = 'n'
segment_models = []
#Initialize new model for models not set to use cache
log.info('=======INITIALIZING UN-CACHED MODELS========')
index = 0
for model in model_settings:
if model_settings[model]['use_cached_model'] == 'n':
new_model = ensembles.Model(model_name=model,target=model_settings[model]['target'],
segment=model_settings[model]['segment'],
estimator_class=model_settings[model]['estimator_class'],
estimator_params=model_settings[model]['estimator_params'],
features=model_settings[model]['features'],
postprocess_scalar=model_settings[model]['postprocess_scalar'])
#Flag the model as not cached, so that it does not get skipped when running the modeling process
new_model.use_cached_model='n'
#Project specific model attributes not part of base class
new_model.KNN_neighborhood_threshold=model_settings[model]['KNN_neighborhood_threshold']
new_model.sub_zip_neighborhood=model_settings[model]['sub_zip_neighborhood']
segment_models[index] = new_model
log.info('Model %s intialized at index %i' % (model,index))
index += 1
#Cross validate all segment models (optional)
if settings['export_cv_predictions_all_models'] == 'y' or settings['export_cv_predictions_new_models'] == 'y':
log.info('============CROSS VALIDATION================')
for model in segment_models[:]:
#If model has cached CV predictions then skip predicting and just export them (if selected in settings)
if hasattr(model,'dfCVPredictions'):
log.info('Cached CV predictions found. Using cached CV predictions.')
if settings['export_cv_predictions_all_models'] == 'y':
data_io.save_predictions(model.dfCVPredictions,model.target,model_name=model.model_name,
directory=settings['dir_submissions'],
estimator_class=model.estimator_class, note='CV_list')
else:
print_model_header(model)
#Prepare segment model: segment and create feature vectors for the CV data set
dfTrn_Segment, dfTest_Segment = prepare_segment_model(dfTrnCV,dfTestCV,model)
#Generate CV predictions
train.cross_validate(model, settings, dfTrn_Segment, dfTest_Segment)
#Cache the CV predictions as a dataframe stored in each segment model
model.dfCVPredictions = dfTest_Segment.ix[:,['id',model.target]]
if settings['export_cv_predictions_new_models'] == 'y':
data_io.save_predictions(model.dfCVPredictions,model.target,model_name=model.model_name,
directory=settings['dir_submissions'],
estimator_class=model.estimator_class, note='CV_list')
#Generate predictions on test set for all segment models (optional)
if settings['export_predictions_all_models'] == 'y' or settings['export_predictions_new_models'] == 'y'\
or settings['export_predictions_total'] == 'y':
log.info('=======GENERATING TEST PREDICTIONS==========')
for model in segment_models[:]:
#If model has cached test predictions then skip predicting and just export them (if selected in settings)
if hasattr(model,'dfPredictions'):
log.info('Cached test predictions found for model %s. Using cached predictions.' % model.model_name)
if settings['export_predictions_all_models'] == 'y':
data_io.save_predictions(model.dfPredictions,model.target,model_name=model.model_name,
directory=settings['dir_submissions'],
estimator_class=model.estimator_class,note='TESTset')
else:
print_model_header(model)
#Prepare segment model: segment and create feature vectors for the full TEST data set
dfTrn_Segment, dfTest_Segment = prepare_segment_model(dfTrn,dfTest,model)
#Generate TEST set predictions
model.predict(dfTrn_Segment, dfTest_Segment)
if settings['export_predictions_all_models'] == 'y' or settings['export_predictions_new_models'] == 'y':
data_io.save_predictions(model.dfPredictions,model.target,model_name=model.model_name,
directory=settings['dir_submissions'],
estimator_class=model.estimator_class,note='TESTset')
log.info(utils.line_break())
#Cache the trained models and predictions to file (optional)
if settings['export_cached_models'] == 'y':
log.info('==========EXPORTING CACHED MODELS===========')
data_io.save_cached_object(segment_models,'segment_models')
#Merge each segment model's CV predictions into a master dataframe and export it (optional)----#
if settings['export_cv_predictions_total'] == 'y':
log.info('====MERGING CV PREDICTIONS FROM SEGMENTS====')
dfTestPredictionsTotal = merge_segment_predictions(segment_models, dfTestCV, cv=True)
#---Apply post process rules to master dataframe---#
#Set all votes and comments for remote_api segment to 1 and 0
dfTestPredictionsTotal = dfTestPredictionsTotal.merge(dfTest.ix[:][['source','id']], on='id', how='left')
for x in dfTestPredictionsTotal.index:
if dfTestPredictionsTotal.source[x] == 'remote_api_created':
dfTestPredictionsTotal.num_votes[x] = 1
dfTestPredictionsTotal.num_comments[x] = 0
#Export
timestamp = datetime.now().strftime('%m-%d-%y_%H%M')
filename = 'Submits/'+timestamp+'--bryan_CV_predictions.csv'
dfTestPredictionsTotal.to_csv(filename)
#Merge each segment model's TEST predictions into a master dataframe and export it (optional)----#
if settings['export_predictions_total'] == 'y':
log.info('===MERGING TEST PREDICTIONS FROM SEGMENTS===')
dfTestPredictionsTotal = merge_segment_predictions(segment_models, dfTest)
#---Apply post process rules to master dataframe---#
#Set all votes and comments for remote_api segment to 1 and 0
dfTestPredictionsTotal = dfTestPredictionsTotal.merge(dfTest.ix[:][['source','id']], on='id', how='left')
for x in dfTestPredictionsTotal.index:
if dfTestPredictionsTotal.source[x] == 'remote_api_created':
dfTestPredictionsTotal.num_votes[x] = 1
dfTestPredictionsTotal.num_comments[x] = 0
del dfTestPredictionsTotal['source']
#Export
filename = 'bryan_test_predictions.csv'
data_io.save_combined_predictions(dfTestPredictionsTotal, settings['dir_submissions'], filename)
#End main
log.info('********Program ran successfully. Exiting********')
################################################################################################
#---Calculate the degree of variance between ground truth and the mean of the CV predictions.----#
#---Returns a list of all training records with their average variance---#
train.calc_cv_preds_var(dfTrn,cv_preds)
################################################################################################
#--Use estimator for manual predictions--#
dfTest, clf = train.predict(mtxTrn,mtxTrnTarget.ravel(),mtxTest,dfTest,clf,clf_name) #may require mtxTest.toarray()
dfTest, clf = train.predict(mtxTrn.todense(),mtxTrnTarget.ravel(),mtxTest.todense(),dfTest,clf,clf_name) #may require mtxTest.toarray()
################################################################################################
#--Save feature matrices in svm format for external modeling--#
y_trn = np.asarray(dfTrn.num_votes)
y_test = np.ones(mtxTest.shape[0], dtype = int )
dump_svmlight_file(mtxTrn, y_trn, f = 'Data/Votes_trn.svm', zero_based = False )
dump_svmlight_file(mtxTest, y_test, f = 'Data/Votes_test.svm', zero_based = False )
################################################################################################
#--Save a model to joblib file--#
data_io.save_cached_object(clf,'rf_500_TextAll')
#--Load a model from joblib file--#
data_io.load_cached_object('Models/040513--rf_500_TextAll.joblib.pk1')
################################################################################################
#--Save text feature names list for later reference--#
data_io.save_text_features('Data/text_url_features.txt',tfidf_vec.get_feature_names())
#---Calculate the degree of variance between ground truth and the mean of the CV predictions.----#
#---Returns a list of all training records with their average variance---#
train.calc_cv_preds_var(dfTrn, cv_preds)
################################################################################################
#--Use estimator for manual predictions--#
dfTest, clf = train.predict(mtxTrn, mtxTrnTarget.ravel(), mtxTest, dfTest, clf,
clf_name) #may require mtxTest.toarray()
dfTest, clf = train.predict(mtxTrn.todense(), mtxTrnTarget.ravel(),
mtxTest.todense(), dfTest, clf,
clf_name) #may require mtxTest.toarray()
################################################################################################
#--Save feature matrices in svm format for external modeling--#
y_trn = np.asarray(dfTrn.num_votes)
y_test = np.ones(mtxTest.shape[0], dtype=int)
dump_svmlight_file(mtxTrn, y_trn, f='Data/Votes_trn.svm', zero_based=False)
dump_svmlight_file(mtxTest, y_test, f='Data/Votes_test.svm', zero_based=False)
################################################################################################
#--Save a model to joblib file--#
data_io.save_cached_object(clf, 'rf_500_TextAll')
#--Load a model from joblib file--#
data_io.load_cached_object('Models/040513--rf_500_TextAll.joblib.pk1')
################################################################################################
#--Save text feature names list for later reference--#
data_io.save_text_features('Data/text_url_features.txt',
tfidf_vec.get_feature_names())
