def compute_term_features(doc_list, global_term_dict, df_raw, store_filename):
import math, tabulate, ioData
# reindex df_raw by link column
df = df_raw.set_index('link')
feature_extractor = utils.TextualFeatureExtractor(df)
nr_docs = len(doc_list)
nr_terms = reduce(lambda x, y: x + len(y.relevant_terms), doc_list, 0)
term_dataset = []
for doc in doc_list:
print "======== " + doc.url + " ========"
meta_keywords = df.loc[doc.url]['keywords']
# 1) compute TF
# print "Computing TF ... "
doc.compute_tf()
# print "Document parsed: "
# print doc.transformed
# print "Computing DF, TFIDF and Textual Features ... "
for term in doc.relevant_terms:
# 2) compute DF and TFIDF - use global_term_dict
term.df = global_term_dict[term]
term.tfidf = term.tf * math.log(1 + float(nr_docs) / float(term.df), 2)
# print tabulate.tabulate([[term, term.cvalue, term.tf, term.df, term.tfidf]], headers=('term', 'cval', 'tf', 'df', 'tfidf'))
# print ""
# 3) compute linguistic features
term.set_textual_feature_extractor(feature_extractor)
term.extract_textual_features()
# print tabulate.tabulate([[term, term.is_title, term.is_url, term.is_first_par, term.is_last_par, term.is_description,
# term.is_img_caption, term.is_anchor, term.doc_position]],
# headers=('term', 'is_title', 'is_url', 'is_first_par', 'is_last_par', 'is_description', 'is_img_desc', 'is_anchor', 'doc_pos'))
# 4) check if term is in meta keywords (i.e is relevant)
term.is_keyword = is_meta_keyword(term, meta_keywords)
# print ":: IS RELEVANT = " + str(term.is_keyword)
# print ("\n\n")
term_dataset.append([term.original, doc.url, term.cvalue, term.tf, term.df, term.tfidf,
term.is_title, term.is_url, term.is_first_par, term.is_last_par, term.is_description,
term.is_img_caption, term.is_anchor, term.doc_position, term.is_keyword])
term_df_headers = ['term', 'doc_url', 'cvalue', 'tf', 'df', 'tfidf', 'is_title', 'is_url',
'is_first_par', 'is_last_par', 'is_description',
'is_img_desc', 'is_anchor', 'doc_pos', 'relevant']
term_df = pd.DataFrame(term_dataset, columns=term_df_headers)
ioData.writeData(term_df, store_filename)
def create_term_train_test_dataset(global_term_feature_file, extracted_test_terms_file, train_feature_file, test_feature_file):
import ioData as io
df = io.readData(global_term_feature_file)
cvalRes = None
with open(extracted_test_terms_file) as fp:
cvalRes = json.load(fp, encoding="utf-8")
test_urls = cvalRes.keys()
test_df = df.loc[df['doc_url'].isin(test_urls)]
io.writeData(test_df, test_feature_file)
train_df = df.loc[~df.index.isin(test_df.index)]
io.writeData(train_df, train_feature_file)
def has_jwplayer(paragraphs):
for p in paragraphs:
s = sum(map(lambda x : x.count("jwplayer("), p))
if s > 0:
return True
return False
if __name__ == "__main__":
import ioData
TRAIN_DATASET_FILE = "dataset/term-feature-train-dataset-v3.json"
TEST_DATASET_FILE = "dataset/term-feature-test-dataset-v3.json"
grapeshot_df = pd.read_excel("dataset/meta_keywords_overlaps.xlsx", "Overlaps")
grapeshot_df = grapeshot_df[["URL", "Keywords"]]
grapeshot_df.columns = ['url', 'keywords']
grapeshot_df['keywords'] = grapeshot_df['keywords'].map(lambda x: x.lower())
extracted_df = extract_test_keywords(TRAIN_DATASET_FILE, TEST_DATASET_FILE, retrain=True)
# merge dataframes
comparison_df = pd.merge(extracted_df, grapeshot_df, on='url')
comparison_df['overlap'] = comparison_df.apply(extracted_keyterms_overlap, axis = 1)
ioData.writeData(comparison_df, "dataset/comparison_df_v3.json")
comparison_df.to_excel("dataset/comparison_df_v3.xlsx", "Overlap")
print comparison_df.describe()
