def train_model(urls):
logger.info('Start train_model...')
logger.info('Num of train urls: %s' % len(urls))
result = {}
# config
tokenizer = GeneralTokenizer().tokenize
min_ngram = 1
max_ngram = 2
# train
mg_client = get_mg_client()
storage = mg_client.web.page
content_getter_with_storage = ContentGetter(
PageCrawlerWithStorage(storage), s_extractor)
modeler = WebPageTypeModeler(urls, content_getter_with_storage,
path.join(model_loc_dir, model_name),
tokenizer, min_ngram, max_ngram)
ok, msg = modeler.train()
mg_client.close()
if not ok:
result['error'] = True
result['message'] = msg
return result
result[
'message'] = 'The new model name %s was trained successfully' % model_name
result['model_name'] = model_name
result['data'] = msg
logger.info('End train_model...')
return result
def delete(self):
"""Get list labeled data"""
result = {
'error': False,
'message': '',
}
urls = request.values.get('urls', '')
page_types = request.values.get('type', '')
page_types = [t.strip().lower()
for t in page_types.split(',')] if page_types else []
urls = [u.strip().lower() for u in urls.split(',')
if u] if urls else []
if not urls:
result['error'] = True
result['message'] = 'Urls is empty'
return result
# append urls that missing schema
for idx, url in enumerate(urls):
if not url.startswith('http'):
urls[idx] = 'http://' + url
mg_client = get_mg_client()
storage = mg_client.web.page
web_page_type = WebPageType(storage)
deleted_count = web_page_type.delete(page_types, urls)
result['message'] = '%s urls was deleted' % deleted_count
mg_client.close()
return result
def post(self):
"""Post test set urls and model name for evaluation"""
result = {'error': False}
model_name = request.values.get('model_name', '')
urls = request.values.get('urls', '')
urls = [u.strip().lower() for u in urls.split(',') if u]
if not urls:
result['error'] = True
result['message'] = 'Urls is empty'
return result
list_model = get_list_model()
if not model_name or model_name not in list_model:
result['error'] = True
result[
'message'] = 'Model name is invalid, please select one of below models'
result['models'] = list_model
return result
# append urls that missing schema
for idx, url in enumerate(urls):
if not url.startswith('http'):
urls[idx] = 'http://' + url
unlabeled_data = check_unlabeled_data(urls)
if unlabeled_data:
result['error'] = True
result[
'message'] = 'Please label all urls firstly, unlabeled data: %s' % ', '.join(
unlabeled_data)
return result
extractor_name = request.values.get('extractor', list_extractor[0])
s_extractor = get_extractor(extractor_name)
if not extractor:
result['error'] = True
result[
'message'] = "The extractor name '%s' does not support yet" % extractor_name
return result
mg_client = get_mg_client()
storage = mg_client.web.page
s_crawler = PageCrawlerWithStorage(storage)
s_content_getter = ContentGetter(crawler=s_crawler,
extractor=s_extractor)
s_classifier = PredictWebPageType(model_loc_dir,
model_name,
s_content_getter,
evaluate_mode=True)
if classifier.get_current_model() != model_name:
s_classifier.web_page_type_classifier = None
else:
s_classifier.web_page_type_classifier = classifier.web_page_type_classifier
s_classifier.labels = classifier.web_page_type_classifier.named_steps[
'clf'].classes_
evaluation = WebPageTypeModelEvaluation(urls, storage, s_classifier)
result.update(evaluation.evaluate())
result['model_name'] = model_name
mg_client.close()
return result
def post(self):
"""Post labeled data to update"""
result = {'error': False, 'message': ''}
urls = request.values.get('urls', '')
page_type = request.values.get('type', '')
urls = [u.strip().lower() for u in urls.split(',') if u]
if not urls:
result['error'] = True
result['message'] = 'Urls is empty'
return result
if not page_type:
result['error'] = True
result['message'] = 'The web page type is empty'
return result
# append urls that missing schema
for idx, url in enumerate(urls):
if not url.startswith('http'):
urls[idx] = 'http://' + url
mg_client = get_mg_client()
storage = mg_client.web.page
web_page_type = WebPageType(storage)
updated_count = web_page_type.update(urls, page_type)
mg_client.close()
result[
'message'] = '%s urls has been updated label successful' % updated_count
return result
def evaluate_model(urls):
logger.info('Start evaluate_model...')
logger.info('Num of test urls: %s' % len(urls))
result = {'error': False}
mg_client = get_mg_client()
storage = mg_client.web.page
s_crawler = PageCrawlerWithStorage(storage)
s_content_getter = ContentGetter(crawler=s_crawler, extractor=s_extractor)
s_classifier = PredictWebPageType(model_loc_dir,
model_name,
s_content_getter,
evaluate_mode=True)
evaluation = WebPageTypeModelEvaluation(urls, storage, s_classifier)
result.update(evaluation.evaluate())
result['model_name'] = model_name
mg_client.close()
logger.info('End evaluate_model...')
return result
def get(self):
"""Get list labeled data"""
result = {'error': False, 'message': '', 'pages': []}
urls = request.values.get('urls', '')
page_types = request.values.get('type', '')
limit = request.values.get('limit', '50')
offset = request.values.get('offset', '0')
try:
limit = int(limit)
except ValueError as ex:
result['error'] = True
result['message'] = 'limit must be in integer'
try:
offset = int(offset)
except ValueError as ex:
result['error'] = True
result['message'] = 'offset must be in integer'
page_types = [t.strip().lower()
for t in page_types.split(',')] if page_types else []
urls = [u.strip().lower() for u in urls.split(',')
if u] if urls else []
# append urls that missing schema
for idx, url in enumerate(urls):
if not url.startswith('http'):
urls[idx] = 'http://' + url
mg_client = get_mg_client()
storage = mg_client.web.page
web_page_type = WebPageType(storage)
pages, type_count, total = web_page_type.search(
page_types, urls, limit, offset)
mg_client.close()
result['pages'] = pages
result['type_count'] = type_count
result['total'] = total
return result
def post(self):
"""Post urls for crawling and save to database"""
result = {'error': False, 'message': ''}
urls = request.values.get('urls', '')
urls = [u.strip().lower() for u in urls.split(',') if u]
if not urls:
result['error'] = True
result['message'] = 'Urls is empty'
return result
# append urls that missing schema
for idx, url in enumerate(urls):
if not url.startswith('http'):
urls[idx] = 'http://' + url
mg_client = get_mg_client()
storage = mg_client.web.page
s_crawler = PageCrawlerWithStorage(storage)
pages = s_crawler.process(urls)
mg_client.close()
result['message'] = '%s was crawled successfully' % len(pages)
return result
def get_training_urls(item_num_each_label):
logger.info('Start get_training_urls...')
result = []
mg_client = get_mg_client()
db = mg_client.web.page
agg_pipeline = [{
'$match': {
'type': {
'$in': ['ecommerce', 'news/blog']
}
}
}, {
'$group': {
'_id': '$type',
'urls': {
'$push': '$_id'
}
}
}]
agg_type_urls = {}
for a in db.aggregate(agg_pipeline):
agg_type_urls[a['_id']] = a['urls']
for page_type, urls in agg_type_urls.items():
logger.info('Urls for type %s, having total: %s' %
(page_type, len(urls)))
s_urls = random.sample(
urls, item_num_each_label
if len(urls) > item_num_each_label else len(urls))
logger.info('Training data for type %s: %s urls' %
(page_type, len(s_urls)))
result += s_urls
mg_client.close()
logger.info('Total training urls: %s' % len(result))
logger.info('End get_training_urls...')
return result
def test_crawler(self):
mg_client = get_mg_client()
storage = mg_client.web.page
crawler = PageCrawlerWithStorage(storage)
res = crawler.process(self.urls)
pprint(res)
def check_unlabeled_data(urls):
mg_client = get_mg_client()
storage = mg_client.web.page
web_page_type = WebPageType(storage)
mg_client.close()
return web_page_type.check_unlabeled_data(urls)
def post(self):
"""Post web page urls to train new model"""
result = {'error': False, 'message': ''}
urls = request.values.get('urls', '')
urls = [u.strip().lower() for u in urls.split(',') if u]
if not urls:
result['error'] = True
result['message'] = 'Urls is empty'
return result
extractor_name = request.values.get('extractor', list_extractor[0])
s_extractor = get_extractor(extractor_name)
if not extractor:
result['error'] = True
result[
'message'] = "The extractor name '%s' does not support yet" % extractor_name
return result
model_name = request.values.get(
'model_name',
time.strftime(self.date_time_format) +
'_page_type_classifier.model')
if model_name in get_list_model():
result['error'] = True
result[
'message'] = "The model name '%s' is duplicated, please select another model name." % model_name
return result
tokenizer_name = request.values.get('tokenizer', list_tokenizer[0])
if not tokenizer_name:
result['error'] = True
result['message'] = 'Tokenizer is empty'
return result
tokenizer = get_tokenizer(tokenizer_name)
if not tokenizer:
result['error'] = True
result['message'] = "Tokenizer name '%s' is not supported, please choose one of these tokenizer name: %s" \
% (tokenizer_name, ', '.join(list_tokenizer))
return result
min_ngram = request.values.get('min_ngram', '1')
max_ngram = request.values.get('max_ngram', '2')
try:
min_ngram = int(min_ngram)
max_ngram = int(max_ngram)
except ValueError:
result['error'] = True
result['message'] = 'Max ngram and min ngram must be integer'
return result
# append urls that missing schema
for idx, url in enumerate(urls):
if not url.startswith('http'):
urls[idx] = 'http://' + url
unlabeled_data = check_unlabeled_data(urls)
if unlabeled_data:
result['error'] = True
result[
'message'] = 'Please label all urls firstly, unlabeled data: %s' % ', '.join(
unlabeled_data)
return result
mg_client = get_mg_client()
storage = mg_client.web.page
content_getter_with_storage = ContentGetter(
PageCrawlerWithStorage(storage), s_extractor)
modeler = WebPageTypeModeler(urls, content_getter_with_storage,
path.join(model_loc_dir, model_name),
tokenizer, min_ngram, max_ngram)
ok, msg = modeler.train()
mg_client.close()
if not ok:
result['error'] = True
result['message'] = msg
return result
result[
'message'] = 'The new model name %s was trained successfully' % model_name
result['model_name'] = model_name
result['data'] = msg
return result
