def test_aggregated_sentiments():
sub_clf = classifier.get_optimal_subjectivity_classifier()
pol_clf = classifier.get_optimal_polarity_classifier()
tweets = utils.get_pickles(2)
sentimentvalues = utils.get_sentimentvalues(2)
sub_train_tweets, sub_train_targets, _, _, sub_train_sentiments, _ = utils.make_subjectivity_train_and_test_and_targets(
tweets, sentimentvalues, splitvalue=1.0
)
pol_train_tweets, pol_train_targets, _, _, pol_train_sentiments, _ = utils.make_polarity_train_and_test_and_targets(
tweets, sentimentvalues, splitvalue=1.0
)
sub_predictions = sub_clf.classify(sub_train_tweets, sub_train_sentiments)
pol_predictions = pol_clf.classify(pol_train_tweets, pol_train_sentiments)
print pol_train_targets, pol_predictions
days, targets, predicts, total_frequencies = utils.temporally_aggregate_subjectivity(
sub_train_tweets, sub_predictions, targets=sub_train_targets
)
data = {"Targets": [days, targets], "Predictions": [days, predicts], "Frequencies": [days, total_frequencies]}
plotting.plot_subjectivity_aggregates(data, "aggregated_subjectivity")
days, targets, predicts, frequencies = utils.temporally_aggregate_polarity(
pol_train_tweets, pol_predictions, targets=pol_train_targets
)
for i in range(len(days)):
targets[i] = targets[i] * 1.0 / frequencies[i]
predicts[i] = predicts[i] * 1.0 / frequencies[i]
frequencies[i] = frequencies[i] * 1.0 / total_frequencies[i]
data = {"Targets": [days, targets], "Predictions": [days, predicts], "Frequencies": [days, frequencies]}
plotting.plot_polarity_aggregates(data, "aggregated_polarity")
def get_optimal_subjectivity_classifier():
"""
Trains and returns the optimal subjectivity classifier.
"""
tweets = utils.get_pickles(3)
tweets, targets = utils.make_subjectivity_targets(tweets)
vect_options = {
'ngram_range': (1,1),
'max_df': 0.5
}
tfidf_options = {
'sublinear_tf': False,
'use_idf': True,
'smooth_idf': True,
}
clf = SVM(tweets, targets, vect_options, tfidf_options)
clf.set_feature_set('SA', utils.get_sentimentvalues(3))
clf.train_on_feature_set()
return clf