def run(self):
# read in gzipped tweet file
good_format = re.compile(r'}$')
tweets = []
for line in io.TextIOWrapper(io.BufferedReader(gzip.open(self.in_tweets().path)), encoding='utf-8', errors='ignore'):
if self.format_json:
try:
tweets.append(json.loads(line.strip()))
except:
print('Error loading json, skipping to next line')
else:
try:
tweets.append(line.strip())
except:
print('Error loading json, skipping to next line')
print(self.in_tweets().path,'contains',len(tweets),'before filtering')
tf = tweetfilter.Tweetfilter(tweets)
tf.discard_retweets()
print('after retweet filter',len(tf.tweets))
tf.discard_nondutch()
filtered_tweets = tf.return_tweets()
print('after filtering:',len(filtered_tweets))
# write filtered tweets
outtweets = []
for filtered_tweet in filtered_tweets:
tweetobj = tweet.Tweet()
tweetobj.import_twiqsdict(filtered_tweet)
outtweets.append(tweetobj.return_dict())
# write to file
with open(self.out_filtered().path,'w',encoding='utf-8') as outfile:
json.dump(outtweets,outfile)
def run(self):
# if directory does not exist, create directory
if not os.path.isdir(self.out_eventdir().path):
self.setup_output_dir(self.out_eventdir().path)
# collect tweet files
end_date_year = self.end_date[:4]
end_date_month = self.end_date[4:6]
end_date_day = self.end_date[6:]
last_date = datetime.date(int(end_date_year), int(end_date_month),
int(end_date_day))
first_date = last_date - datetime.timedelta(days=self.window_size - 1)
last_tweetfile = self.in_tweetdir(
).path + '/' + end_date_year + end_date_month + '/' + end_date_year + end_date_month + end_date_day + '-23.out.dateref.cityref.entity.json'
days_tweetfiles = helpers.return_tweetfiles_window(
last_tweetfile, self.window_size - 1)
tweetfiles = []
for day in days_tweetfiles:
tweetfiles.extend([
filename for filename in glob.glob(self.in_tweetdir().path +
'/' + day + '*')
])
print('Reading in citylist')
# read in citylist
with open(self.citylist, 'r', encoding='utf-8') as file_in:
citylist = [
line.strip() for line in file_in.read().strip().split('\n')
]
# extract events
er = event_ranker.EventRanker()
# read in tweets
print('Reading in tweets')
for tweetfile in tweetfiles:
date = helpers.return_date_entitytweetfile(tweetfile)
with open(tweetfile, 'r', encoding='utf-8') as file_in:
tweetdicts = json.loads(file_in.read())
# format as tweet objects
for td in tweetdicts:
if not (td['refdates'] == {} and td['entities'] == {}):
tweetobj = tweet.Tweet()
tweetobj.import_tweetdict(td)
er.add_tweet(tweetobj)
er.tweet_count += 1
# extract events
print('Performing event extraction')
er.extract_events(self.minimum_event_mentions, self.cut_off)
filter = event_filter.EventFilter()
filter.add_events(er.events)
filter.apply_filter(citylist)
events_filtered = filter.return_events()
print('Done. Extracted', len(events_filtered), 'events')
# write to file
outevents = [event.return_dict() for event in events_filtered]
with open(self.out_events().path, 'w', encoding='utf-8') as file_out:
json.dump(outevents, file_out)
def run(self):
# read in citylist
with open(self.citylist, 'r', encoding='utf-8') as file_in:
citylist = [
line.strip() for line in file_in.read().strip().split('\n')
]
# read in tweets
with open(self.in_dateref().path, 'r', encoding='utf-8') as file_in:
tweetdicts = json.loads(file_in.read())
# format as tweet objects
tweets = []
for td in tweetdicts:
tweetobj = tweet.Tweet()
tweetobj.import_tweetdict(td)
tweets.append(tweetobj)
# extract location
for tweetobj in tweets:
# remove already extracted time from the tweet, forming it into chunks
datestrings = [sr[0] for sr in tweetobj.string_refdates]
tweet_chunks = helpers.remove_pattern_from_string(
tweetobj.text, datestrings)
# extract city from chunks
ce = cityref_extractor.CityrefExtractor(citylist)
for chunk in tweet_chunks:
ce.find_cityrefs(chunk)
tweetobj.set_cityrefs(ce.return_cityrefs())
# write to file
outtweets = [tweet.return_dict() for tweet in tweets]
with open(self.out_cityref().path, 'w', encoding='utf-8') as file_out:
json.dump(outtweets, file_out)
def run(self):
# read in tweets
with open(self.in_tokenized().path, 'r', encoding='utf-8') as file_in:
tweetdicts = json.loads(file_in.read())
# format as tweet objects
tweets = []
for td in tweetdicts:
tweetobj = tweet.Tweet()
tweetobj.import_tweetdict(td)
tweets.append(tweetobj)
# extract daterefs
for tweetobj in tweets:
dte = dutch_timex_extractor.Dutch_timex_extractor(
tweetobj.text, tweetobj.datetime)
dte.extract_refdates(self.skip_datematch, self.skip_monthmatch,
self.skip_timeunitmatch, self.skip_daymatch)
dte.filter_future_refdates()
tweetobj.set_refdates(dte.refdates)
# write to file
outtweets = [tweet.return_dict() for tweet in tweets]
with open(self.out_dateref().path, 'w', encoding='utf-8') as file_out:
json.dump(outtweets, file_out)
def run(self):
# set commonness object
cs = commonness.Commonness()
cs.set_classencoder(self.commonness_txt, self.commonness_cls,
self.commonness_corpus)
cs.set_dmodel(self.ngrams_score)
# read in tweets
with open(self.in_cityref().path, 'r', encoding='utf-8') as file_in:
tweetdicts = json.loads(file_in.read())
# format as tweet objects
tweets = []
for td in tweetdicts:
tweetobj = tweet.Tweet()
tweetobj.import_tweetdict(td)
tweets.append(tweetobj)
# extract entities
for tweetobj in tweets:
# remove already extracted time and locations from the tweet, forming it into chunks
datestrings = [sr[0] for sr in tweetobj.string_refdates]
cities = tweetobj.cityrefs
tweet_chunks = helpers.remove_pattern_from_string(
tweetobj.text, datestrings + cities)
# find entities in every chunk
ee = entity_extractor.EntityExtractor()
ee.set_commonness(cs)
for chunk in tweet_chunks:
tokens = chunk.split()
ee.extract_entities(tokens)
ee.filter_entities_threshold()
tweetobj.set_entities(ee.entities)
# write to file
outtweets = [tweet.return_dict() for tweet in tweets]
with open(self.out_entity().path, 'w', encoding='utf-8') as file_out:
json.dump(outtweets, file_out)
def run(self):
first_event_date_dt = datetime.datetime(int(self.first_event_date[:4]),int(self.first_event_date[4:6]),int(self.first_event_date[6:]))
last_event_date_dt = datetime.datetime(int(self.last_event_date[:4]),int(self.last_event_date[4:6]),int(self.last_event_date[6:]))
# read in burstiness
print('Reading in bursty entities')
with open(self.in_entity_burstiness().path,'r',encoding='utf-8') as file_in:
bursty_entities = file_in.read().strip().split('\n')
set_bursty_entities = set(bursty_entities)
# read in events
term_events = defaultdict(list)
print('Reading in events')
extended_events = []
with open(self.in_events().path, 'r', encoding = 'utf-8') as file_in:
eventdicts = json.loads(file_in.read())
for i,ed in enumerate(eventdicts):
eventobj = event.Event()
eventobj.import_eventdict(ed)
if eventobj.datetime >= first_event_date_dt - datetime.timedelta(days=100) and eventobj.datetime <= last_event_date_dt + datetime.timedelta(days=100):
extended_events.append(eventobj)
if len(list(set_bursty_entities & set(list(ed['entities'])))) > 0:
for term in list(set_bursty_entities & set(list(ed['entities']))):
term_events[term].append(eventobj)
# for each entity
print('Saving event tweets dates by entity')
date_entity_events = defaultdict(lambda : defaultdict(list))
for entity in bursty_entities:
# for each event
if len(term_events[entity]) == 0:
continue
else:
for i,ev in enumerate(term_events[entity]):
if ev.datetime >= first_event_date_dt and ev.datetime <= last_event_date_dt:
if i == 0:
minus = 100
else:
minus = 100 if ((ev.datetime - term_events[entity][i-1].datetime).days > 199 or (ev.datetime - term_events[entity][i-1].datetime).days < 3) else ((ev.datetime - term_events[entity][i-1].datetime).days) / 2
if i == len(term_events[entity])-1:
plus = 100
else:
plus = 100 if ((term_events[entity][i-1].datetime - ev.datetime).days > 199 or (term_events[entity][i-1].datetime - ev.datetime).days < 3) else ((term_events[entity][i-1].datetime - ev.datetime).days) / 2
first = ev.datetime - datetime.timedelta(days=minus)
last = ev.datetime + datetime.timedelta(days=plus)
cursor = first
while cursor <= last:
date_str = ''.join(str(cursor).split()[0].split('-'))
date_entity_events[date_str][entity].append(ev)
cursor += datetime.timedelta(days=1)
# read in tweets
print('Collecting additional tweets')
dates = list(date_entity_events.keys())
months = list(set([d[:6] for d in dates]))
tweetsubdirs = sorted([ subdir for subdir in glob.glob(self.in_tweetdir().path + '/*') ])
entity_tweets = defaultdict(list)
first = True
for tweetsubdir in tweetsubdirs:
subdirstr = tweetsubdir.split('/')[-1]
if subdirstr in months:
# go through all tweet files
tweetfiles = [ tweetfile for tweetfile in glob.glob(tweetsubdir + '/*.entity.json') ]
for tweetfile in tweetfiles:
print(tweetfile)
datestr = tweetfile.split('/')[-1].split('.')[0].split('-')[0]
if datestr in dates:
if first:
candidate_entities = list(date_entity_events[datestr].keys())
set_candidate_entities = set(candidate_entities)
cursordate = datestr
first = False
elif datestr != cursordate:
# add tweets
for entity in candidate_entities:
for ev in date_entity_events[datestr][entity]:
ev.add_tweets(entity_tweets[entity])
cursordate = datestr
candidate_entities = list(date_entity_events[datestr].keys())
set_candidate_entities = set(candidate_entities)
entity_tweets = defaultdict(list)
# read in tweets
with open(tweetfile, 'r', encoding = 'utf-8') as file_in:
tweetdicts = json.loads(file_in.read())
for td in tweetdicts:
if len(list(set_candidate_entities & set(list(td['entities'].keys())))) > 0:
tweetobj = tweet.Tweet()
tweetobj.import_tweetdict(td)
for term in list(set_candidate_entities & set(list(td['entities'].keys()))):
entity_tweets[term].append(tweetobj)
# write to file
print('Writing new events')
out_extended_events = [ev.return_dict() for ev in extended_events]
with open(self.out_more_tweets().path,'w',encoding='utf-8') as file_out:
json.dump(out_extended_events,file_out)
def run(self):
# create directory
self.setup_output_dir(self.out_eventdir().path)
# set dates
end_date_year = self.end_date[:4]
end_date_month = self.end_date[4:6]
end_date_day = self.end_date[6:]
last_date = datetime.date(int(end_date_year), int(end_date_month),
int(end_date_day))
start_date_year = self.start_date[:4]
start_date_month = self.start_date[4:6]
start_date_day = self.start_date[6:]
first_date = datetime.date(int(start_date_year), int(start_date_month),
int(start_date_day))
print('Reading in citylist')
# read in citylist
with open(self.citylist, 'r', encoding='utf-8') as file_in:
citylist = [
line.strip() for line in file_in.read().strip().split('\n')
]
# perform event extraction on first tweet window
print('Reading in first window of tweets')
cursor_date = first_date
date_tweetobjects = defaultdict(list)
date_tweetcounts = defaultdict(int)
window_dates = []
while cursor_date < first_date + datetime.timedelta(
days=self.window_size):
print(cursor_date)
tweetfiles = [
filename for filename in
glob.glob(self.in_tweetdir().path + '/' +
helpers.return_timeobj_date(cursor_date) + '*')
]
for tweetfile in tweetfiles:
# read in tweets
with open(tweetfile, 'r', encoding='utf-8') as file_in:
tweetdicts = json.loads(file_in.read())
date_tweetcounts[cursor_date] += len(tweetdicts)
for td in tweetdicts:
if not (td['refdates'] == {} and td['entities'] == {}):
tweetobj = tweet.Tweet()
tweetobj.import_tweetdict(td)
date_tweetobjects[cursor_date].append(tweetobj)
window_dates.append(cursor_date)
cursor_date += datetime.timedelta(days=1)
# start event extraction
print('Loading tweets into event extractor')
er = event_ranker.EventRanker()
for date in window_dates:
for tweetobject in date_tweetobjects[date]:
er.add_tweet(tweetobject)
er.tweet_count += date_tweetcounts[date]
print('Performing event extraction')
er.extract_events(self.minimum_event_mentions, self.cut_off)
filter = event_filter.EventFilter()
filter.add_events(er.events)
filter.apply_filter(citylist)
events_filtered = filter.return_events()
print('Done. Extracted', len(events_filtered), 'events')
# write to file
outevents = [event.return_dict() for event in events_filtered]
with open(self.out_eventdir().path + '/' +
str(cursor_date - datetime.timedelta(days=1)).replace(
'-', '') + '.events',
'w',
encoding='utf-8') as file_out:
json.dump(outevents, file_out)
# slide window forward and perform event extraction until last date
print('Starting slider')
window_tail = first_date
window_head = cursor_date - datetime.timedelta(days=1)
while window_head <= last_date:
print('Discarding and collecting tweets')
end_slider = window_head + datetime.timedelta(days=self.slider)
while window_head < end_slider:
# remove tweets of tail
print('Deleting records for old tail', window_tail)
del date_tweetobjects[window_tail]
del date_tweetcounts[window_tail]
window_tail = window_tail + datetime.timedelta(days=1)
window_head = window_head + datetime.timedelta(days=1)
print('Collecting tweets for new head', window_head)
tweetfiles = [
filename for filename in
glob.glob(self.in_tweetdir().path + '/' +
helpers.return_timeobj_date(window_head) + '*')
]
for tweetfile in tweetfiles:
# read in tweets
with open(tweetfile, 'r', encoding='utf-8') as file_in:
tweetdicts = json.loads(file_in.read())
date_tweetcounts[window_head] += len(tweetdicts)
for td in tweetdicts:
if not (td['refdates'] == {} and td['entities'] == {}):
tweetobj = tweet.Tweet()
tweetobj.import_tweetdict(td)
date_tweetobjects[window_head].append(tweetobj)
# add tweets to event ranker
print('Loading tweets into event extractor for', window_tail, '-',
window_head)
er = event_ranker.EventRanker()
window_dates = helpers.return_daterange(window_tail,
self.window_size)
for date in window_dates:
for tweetobject in date_tweetobjects[date]:
er.add_tweet(tweetobject)
er.tweet_count += date_tweetcounts[date]
print('Performing event extraction')
er.extract_events(self.minimum_event_mentions, self.cut_off)
filter = event_filter.EventFilter()
filter.add_events(er.events)
filter.apply_filter(citylist)
events_filtered = filter.return_events()
print('Done. Extracted', len(events_filtered), 'events')
# write to file
outevents = [event.return_dict() for event in events_filtered]
with open(self.out_eventdir().path + '/' +
str(window_head).replace('-', '') + '.events',
'w',
encoding='utf-8') as file_out:
json.dump(outevents, file_out)
