def create_corpus(src, out_dir, no_below=20, keep_words=_DEFAULT_KEEP_WORDS):
"""\
"""
wordid_filename = os.path.join(out_dir, 'cables_wordids.pickle')
bow_filename = os.path.join(out_dir, 'cables_bow.mm')
tfidf_filename = os.path.join(out_dir, 'cables_tfidf.mm')
predicate = None # Could be set to something like pred.origin_filter(pred.origin_germany)
# 1. Create word dict
dct = Dictionary()
dct_handler = DictionaryHandler(dct)
handler = create_filter(dct_handler)
handle_source(src, handler, predicate)
dct.filter_extremes(no_below=no_below, no_above=0.1, keep_n=keep_words)
dct.save(wordid_filename)
# 2. Reiterate through the cables and create the vector space
corpus_handler = CorpusHandler(out_dir, dct=dct, allow_dict_updates=False)
handler = create_filter(corpus_handler)
handle_source(src, handler, predicate)
# 3. Load corpus
mm = MmCorpus(bow_filename)
# 4. Create TF-IDF model
tfidf = TfidfModel(mm, id2word=dct, normalize=True)
# 5. Save the TF-IDF model
MmCorpus.serialize(tfidf_filename, tfidf[mm], progress_cnt=10000)
def generate_topicmaps(src, handle_media=False):
def tee(files, filename):
ctm = openfile(filename + '.ctm')
xtm = openfile(filename + '.xtm')
files.append(ctm)
files.append(xtm)
return TeeCableHandler(create_ctm_handler(ctm),
create_xtm_handler(xtm))
files = []
handlers = []
european_handler = CableIdFilter(tee(files, 'european-cables'),
pred.origin_filter(pred.origin_europe))
all_cables_handler = tee(files, 'cables')
handlers.append(
DefaultMetadataOnlyFilter(
DebitlyFilter(TeeCableHandler(european_handler,
all_cables_handler))))
handlers.append(slo_handler(files))
handlers.append(ContentCableHandler(tee(files, 'cable-content')))
if handle_media:
ctm, xtm = openfile('media-iris.ctm'), openfile('media-iris.xtm')
files.append(ctm)
files.append(xtm)
h = DebitlyFilter(
MediaTitleResolver(
handler.TeeMapHandler(create_ctm_miohandler(ctm),
create_xtm_miohandler(xtm))))
handlers.append(h)
handle_source(src, MultipleCableHandler(handlers))
for f in files:
f.close()
def create_corpus(src, out_dir, no_below=20, keep_words=_DEFAULT_KEEP_WORDS):
"""\
"""
wordid_filename = os.path.join(out_dir, 'cables_wordids.pickle')
bow_filename = os.path.join(out_dir, 'cables_bow.mm')
tfidf_filename = os.path.join(out_dir, 'cables_tfidf.mm')
predicate = None # Could be set to something like pred.origin_filter(pred.origin_germany)
# 1. Create word dict
dct = Dictionary()
dct_handler = DictionaryHandler(dct)
handler = create_filter(dct_handler)
handle_source(src, handler, predicate)
dct.filter_extremes(no_below=no_below, no_above=0.1, keep_n=keep_words)
dct.save(wordid_filename)
# 2. Reiterate through the cables and create the vector space
corpus_handler = CorpusHandler(out_dir, dct=dct, allow_dict_updates=False)
handler = create_filter(corpus_handler)
handle_source(src, handler, predicate)
# 3. Load corpus
mm = MmCorpus(bow_filename)
# 4. Create TF-IDF model
tfidf = TfidfModel(mm, id2word=dct, normalize=True)
# 5. Save the TF-IDF model
MmCorpus.serialize(tfidf_filename, tfidf[mm], progress_cnt=10000)
def generate_corpus(src):
handler = TeeCableHandler(DefaultMetadataOnlyFilter(CorpusHandler('./', prefix='german_cables_metadata_')),
CorpusHandler('./', prefix='german_cables_'))
handle_source(src, handler, pred.origin_filter(pred.origin_germany))