document_name = six.text_type(
file_path.rstrip('.eml').lstrip(path_prefix))
documents.append(document_name)
except UnicodeDecodeError: # So we will not use that file.
del new_file_paths[i]
print('Skipping file: ', file_path, '.')
return documents, new_file_paths
print('Loading documents.')
if use_small_dataset:
docs, input_type, tokenizer = dataset_small()
paths = docs
else:
unchecked_paths, input_type, tokenizer = dataset_mails(doc_path)
docs, paths = get_document_names(doc_path, unchecked_paths)
print('Loaded ', len(docs), ' files from path: ', doc_path, '.')
print('Extracting features.')
vectorizer = create_vectorizer(input_type, tokenizer=tokenizer,
ngram_range=(1, 1))
data = vectorizer.fit_transform(paths)
features = vectorizer.get_feature_names()
data = coo_matrix(data)
data = apply_threshold(data, 0.1) # Filter out everything, that is too weak.
from tools.datasets import dataset_mails
# TODO: move to scripts
def fit_lda(corpus, vocabulary, n_topics=10, passes=1):
return LdaModel(corpus, num_topics=n_topics, passes=passes,
id2word={i: s for i, s in enumerate(vocabulary)})
def fit_hdp_lda(corpus, vocabulary):
return HdpModel(corpus, {i: s for i, s in enumerate(vocabulary)})
if __name__ == '__main__':
content, input_type, tokenizer = dataset_mails(
'/Users/yanchith/workspace/won-corpora/processed')
# content, input_type, tokenizer = dataset_newsgroups()
vectorizer = TfidfVectorizer(min_df=3, input=input_type, ngram_range=(1, 1),
stop_words='english', tokenizer=tokenizer)
X = vectorizer.fit_transform(content)
features = vectorizer.get_feature_names()
print('Number of features:', len(features))
print('Bag of words shape:', X.shape)
print(features)
# Beware, gensim requires the matrix transposed
model = fit_hdp_lda(matutils.Sparse2Corpus(X, documents_columns=False),
features)
