def test_chunks():
results = [chunk for chunk in utils.chunks([], 100)]
assert_equals(results, [])
results = [chunk for chunk in utils.chunks(range(5), 1)]
assert_equals(results, [[0], [1], [2], [3], [4]])
results = [chunk for chunk in utils.chunks(range(5), 2)]
assert_equals(results, [[0, 1], [2, 3], [4]])
def test_chunks():
results = [chunk for chunk in utils.chunks([], 100)]
assert_equals(results, [])
results = [chunk for chunk in utils.chunks(range(5), 1)]
assert_equals(results, [[0], [1], [2], [3], [4]])
results = [chunk for chunk in utils.chunks(range(5), 2)]
assert_equals(results, [[0, 1], [2, 3], [4]])
def generate_tv_cloud(search_params,
min_length,
stopwords,
ids=None,
stems=False):
"""Generates multiple document word clouds using the termvector approach"""
burst = True
chunk_size = 1000
progress = 0
wordcloud_counter = Counter()
if not ids:
# Normal (non-time line) wordcloud (based on query)
burst = False
result = count_search_results(settings.ES_INDEX, settings.ES_DOCTYPE,
search_params['query'],
search_params['dates'],
search_params['distributions'],
search_params['article_types'],
search_params['pillars'])
doc_count = result.get('count')
info = {'current': 0, 'total': doc_count}
current_task.update_state(state='PROGRESS', meta=info)
for subset in document_id_chunks(
chunk_size, settings.ES_INDEX, settings.ES_DOCTYPE,
search_params['query'], search_params['dates'],
search_params['distributions'], search_params['article_types'],
search_params['pillars']):
result = termvector_wordcloud(settings.ES_INDEX,
settings.ES_DOCTYPE, subset,
min_length, stems)
wordcloud_counter = wordcloud_counter + result
progress += len(subset)
info = {'current': progress, 'total': doc_count}
current_task.update_state(state='PROGRESS', meta=info)
else:
# Time line word cloud (based in list of document ids)
for subset in utils.chunks(ids, chunk_size):
result = termvector_wordcloud(settings.ES_INDEX,
settings.ES_DOCTYPE, subset,
min_length, stems)
wordcloud_counter = wordcloud_counter + result
progress += len(subset)
info = {'current': progress, 'total': len(ids)}
current_task.update_state(state='PROGRESS', meta=info)
return counter2wordclouddata(wordcloud_counter, burst, stopwords)
def handle(self, *args, **options):
query_size = 10000
es_retrieve = 2500
if len(args) > 0:
query_size = int(args[0])
if DocID.objects.all().count() == 0:
print 'Document ids must be gathered before query terms can be ' \
'extracted. \n Please execute python manage.py gatherdocids'
sys.exit(1)
# Empty database
QueryTerm.objects.all().delete()
self.stdout.write('Retrieving {} documents...'.format(query_size))
terms = set()
# select random documents
document_set = DocID.objects.order_by('?')[0:query_size]
doc_ids = [doc.doc_id for doc in document_set]
for ids in utils.chunks(doc_ids, es_retrieve):
bdy = {
'ids': ids,
'parameters': {
'fields': ['article_dc_title'],
'term_statistics': False,
'field_statistics': False,
'offsets': False,
'payloads': False,
'positions': False
}
}
t_vectors = _es().mtermvectors(index=settings.ES_INDEX,
doc_type=settings.ES_DOCTYPE,
body=bdy)
for doc in t_vectors.get('docs'):
for field, data in doc.get('term_vectors').iteritems():
for term, details in data.get('terms').iteritems():
t = term.encode('ascii', 'replace')
if len(t) <= 26:
terms.add(QueryTerm(t))
# save to database
print 'Saving {} terms to the database.'.format(len(terms))
QueryTerm.objects.bulk_create(terms)
def generate_tv_cloud(search_params, min_length, stopwords, ids=None, stems=False):
"""Generates multiple document word clouds using the termvector approach"""
burst = True
chunk_size = 1000
progress = 0
wordcloud_counter = Counter()
if not ids:
# Normal (non-time line) wordcloud (based on query)
burst = False
result = count_search_results(settings.ES_INDEX,
settings.ES_DOCTYPE,
search_params['query'],
search_params['dates'],
search_params['distributions'],
search_params['article_types'],
search_params['pillars'])
doc_count = result.get('count')
info = {
'current': 0,
'total': doc_count
}
current_task.update_state(state='PROGRESS', meta=info)
for subset in document_id_chunks(chunk_size,
settings.ES_INDEX,
settings.ES_DOCTYPE,
search_params['query'],
search_params['dates'],
search_params['distributions'],
search_params['article_types'],
search_params['pillars']):
result = termvector_wordcloud(settings.ES_INDEX,
settings.ES_DOCTYPE,
subset,
min_length,
stems)
wordcloud_counter = wordcloud_counter + result
progress += len(subset)
info = {
'current': progress,
'total': doc_count
}
current_task.update_state(state='PROGRESS', meta=info)
else:
# Time line word cloud (based in list of document ids)
for subset in utils.chunks(ids, chunk_size):
result = termvector_wordcloud(settings.ES_INDEX,
settings.ES_DOCTYPE,
subset,
min_length,
stems)
wordcloud_counter = wordcloud_counter + result
progress += len(subset)
info = {
'current': progress,
'total': len(ids)
}
current_task.update_state(state='PROGRESS', meta=info)
return counter2wordclouddata(wordcloud_counter, burst, stopwords)
def handle(self, *args, **options):
query_size = 2500
n_repetitions = 10
es_retrieve = 2500
if len(args) > 0:
query_size = int(args[0])
if len(args) > 1:
n_repetitions = int(args[1])
if len(args) > 2:
es_retrieve = int(args[2])
response_times = []
for repetition in range(n_repetitions):
c1 = time.time()
es_time = []
wordcloud = Counter()
# select random documents
document_set = DocID.objects.order_by('?')[0:query_size]
doc_ids = [doc.doc_id for doc in document_set]
for ids in utils.chunks(doc_ids, es_retrieve):
bdy = {
'ids': ids,
'parameters': {
'fields': ['article_dc_title', 'text_content'],
'term_statistics': False,
'field_statistics': False,
'offsets': False,
'payloads': False,
'positions': False
}
}
c3 = time.time()
t_vectors = _es().mtermvectors(index='kb', doc_type='doc',
body=bdy)
c4 = time.time()
es_time.append((c4-c3)*1000)
for doc in t_vectors.get('docs'):
for field, data in doc.get('term_vectors').iteritems():
temp = {}
for term, details in data.get('terms').iteritems():
temp[term] = int(details['term_freq'])
wordcloud.update(temp)
c2 = time.time()
elapsed_c = (c2-c1)*1000
response_times.append(elapsed_c)
self.stdout.write(str(elapsed_c)+' ES: '+str(sum(es_time)))
self.stdout.flush()
avg = float(sum(response_times)/len(response_times))
print 'Average response time for generating word clouds from {num} ' \
'documents: {avg} miliseconds'.format(num=query_size, avg=avg)