def get_feature_array(tweets):
sentiment_analyzer = VS()
feats=[]
for t in tweets:
feats.append(other_features(t, sentiment_analyzer))
return np.array(feats)
def getscores():
SCOPES = 'https://www.googleapis.com/auth/gmail.readonly'
store = file.Storage('storage.json')
creds = store.get()
# nltk.download ('stopwords')
# stop_words = get_stop_words('en')
analyzer = VS()
# stopwords_list = stopwords.words('english') + stopwords.words('portuguese')
# tvd = TfidfVectorizer(analyzer='word',ngram_range=(1, 3),min_df=0.003,max_df=0.01,max_features=5000,norm='l1',stop_words=stopwords_list)
if not creds or creds.invalid:
flow = client.flow_from_clientsecrets('client_secret.json',SCOPES)
creds = tools.run_flow(flow,store)
GMAIL = discovery.build('gmail','v1',http=creds.authorize(Http()))
label = 'INBOX'
Spl_char = [",","-",".",";",">","<","=","&",":","#","!"]
threads = ListThreadsWithLabels(GMAIL,'me',[label])
# all_threads = []
all = []
for t in threads:
conversation, subject = GetThread(GMAIL,'me',t['id'])
score = []
for msg in conversation:
if "Team" not in msg:
vs = analyzer.polarity_scores(msg)
score.append(vs['compound'])
one = [subject,conversation,score]
all.append(one)
return all
def other_features(tweet):
##SENTIMENT
sentiment = VS(tweet)
##READABILITY
#See https://pypi.python.org/pypi/textstat/
flesch = round(textstat.flesch_reading_ease(tweet), 3)
flesch_kincaid = round(textstat.flesch_kincaid_grade(tweet), 3)
gunning_fog = round(textstat.gunning_fog(tweet), 3)
##TEXT-BASED
length = len(tweet)
num_terms = len(tweet.split())
##TWITTER SPECIFIC TEXT FEATURES
hashtag_count = tweet.count("#")
mention_count = tweet.count("@")
url_count = tweet.count("http")
retweet = 0
if tweet.lower().startswith("rt") is True:
retweet = 1
#Checking if RT is in the tweet
words = tweet.lower().split()
if "rt" in words or "#rt" in words:
retweet = 1
features = [
sentiment['compound'], flesch, flesch_kincaid, gunning_fog, length,
num_terms, hashtag_count, mention_count, url_count, retweet
]
return features
def other_features(tweet):
"""This function takes a string and returns a list of features.
These include Sentiment scores, Text and Readability scores,
as well as Twitter specific features"""
##SENTIMENT
sentiment_analyzer = VS()
sentiment = sentiment_analyzer.polarity_scores(tweet)
words = preprocess(tweet) #Get text only
syllables = textstat.syllable_count(words) #count syllables in words
num_chars = sum(len(w) for w in words) #num chars in words
num_chars_total = len(tweet)
num_terms = len(tweet.split())
num_words = len(words.split())
avg_syl = round(float((syllables+0.001))/float(num_words+0.001),4)
num_unique_terms = len(set(words.split()))
###Modified FK grade, where avg words per sentence is just num words/1
FKRA = round(float(0.39 * float(num_words)/1.0) + float(11.8 * avg_syl) - 15.59,1)
##Modified FRE score, where sentence fixed to 1
FRE = round(206.835 - 1.015*(float(num_words)/1.0) - (84.6*float(avg_syl)),2)
twitter_objs = count_twitter_objs(tweet) #Count #, @, and http://
retweet = 0
if "rt" in words:
retweet = 1
features = [FKRA, FRE,syllables, avg_syl, num_chars, num_chars_total, num_terms, num_words,
num_unique_terms, sentiment['neg'], sentiment['pos'], sentiment['neu'], sentiment['compound'],
twitter_objs[2], twitter_objs[1],
twitter_objs[0], retweet]
#features = pandas.DataFrame(features)
return features
def get_sentiment(message):
sentiment_analyzer = VS()
res = sentiment_analyzer.polarity_scores(message)
results = {}
results['Positive'] = res['pos'] * 100
results['Negative'] = res['neg'] * 100
results['Neutral'] = res['neu'] * 100
return results
def __init__(self, ):
cur_path = os.path.dirname(os.path.abspath(__file__))
self.model = joblib.load(os.path.join(cur_path, 'final_model.pkl'))
self.tf_vectorizer = joblib.load(
os.path.join(cur_path, 'final_tfidf.pkl'))
self.idf_vector = joblib.load(os.path.join(cur_path, 'final_idf.pkl'))
self.pos_vectorizer = joblib.load(
os.path.join(cur_path, 'final_pos.pkl'))
self.stemmer = PorterStemmer()
self.sentiment_analyzer = VS()
from sklearn.feature_extraction.text import TfidfVectorizer
import nltk
from nltk.stem.porter import *
import string
import re
import csv
from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer as VS
from textstat.textstat import *
stopwords = stopwords = nltk.corpus.stopwords.words("english")
other_exclusions = ["#ff", "ff", "rt"]
stopwords.extend(other_exclusions)
sentiment_analyzer = VS()
stemmer = PorterStemmer()
def preprocess(text_string):
"""
Accepts a text string and replaces:
1) urls with URLHERE
2) lots of whitespace with one instance
3) mentions with MENTIONHERE
This allows us to get standardized counts of urls and mentions
Without caring about specific people mentioned
"""
space_pattern = '\s+'
def logregress_linsvc(input):
# nltk.download('averaged_perceptron_tagger')
# nltk.download('punkt')
# nltk.download('wordnet')
#base_tweets=input['text']
#tweets = [x for x in base_tweets if type(x) == str]
stopwords = nltk.corpus.stopwords.words("english")
other_exclusions = ["#ff", "ff", "rt"]
stopwords.extend(other_exclusions)
# stemmer = PorterStemmer()
#################################################################################################
'''Preprocess tweets, tokenize, and gather feature,POS tags'''
################################################################################################
def basic_tokenize(tweet):
"""Same as tokenize but without the stemming"""
tweet = " ".join(re.split("[^a-zA-Z.,!?]*", tweet.lower())).strip()
return tweet.split()
sentiment_analyzer = VS()
def count_twitter_objs(text_string):
"""
Accepts a text string and replaces:
1) urls with URLHERE
2) lots of whitespace with one instance
3) mentions with MENTIONHERE
4) hashtags with HASHTAGHERE
This allows us to get standardized counts of urls and mentions
Without caring about specific people mentioned.
Returns counts of urls, mentions, and hashtags.
"""
space_pattern = '\s+'
giant_url_regex = ('http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|'
'[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+')
mention_regex = '@[\w\-]+'
hashtag_regex = '#[\w\-]+'
parsed_text = re.sub(space_pattern, ' ', text_string)
parsed_text = re.sub(giant_url_regex, 'URLHERE', parsed_text)
parsed_text = re.sub(mention_regex, 'MENTIONHERE', parsed_text)
parsed_text = re.sub(hashtag_regex, 'HASHTAGHERE', parsed_text)
return(parsed_text.count('URLHERE'),parsed_text.count('MENTIONHERE'),parsed_text.count('HASHTAGHERE'))
def other_features(tweet):
"""This function takes a string and returns a list of features.
These include Sentiment scores, Text and Readability scores,
as well as Twitter specific features"""
##SENTIMENT
sentiment = sentiment_analyzer.polarity_scores(tweet)
words = preprocess(tweet) #Get text only
syllables = textstat.syllable_count(words) #count syllables in words
num_chars = sum(len(w) for w in words) #num chars in words
num_chars_total = len(tweet)
num_terms = len(tweet.split())
num_words = len(words.split())
avg_syl = round(float((syllables+0.001))/float(num_words+0.001),4)
num_unique_terms = len(set(words.split()))
###Modified FK grade, where avg words per sentence is just num words/1
FKRA = round(float(0.39 * float(num_words)/1.0) + float(11.8 * avg_syl) - 15.59,1)
##Modified FRE score, where sentence fixed to 1
FRE = round(206.835 - 1.015*(float(num_words)/1.0) - (84.6*float(avg_syl)),2)
twitter_objs = count_twitter_objs(tweet) #Count #, @, and http://
features = [FKRA, FRE, syllables, avg_syl, num_chars, num_chars_total, num_terms, num_words,
num_unique_terms,sentiment['neu'], sentiment['compound'],
twitter_objs[2],twitter_objs[1],twitter_objs[0]]
#features = pandas.DataFrame(features)
return features
def get_feature_array(tweets):
feats=[]
for t in tweets:
feats.append(other_features(t))
return np.array(feats)
def get_pos_tags(tweets):
"""Takes a list of strings (tweets) and
returns a list of strings of (POS tags).
"""
tweet_tags = []
for t in tweets:
tokens = basic_tokenize(preprocess(t))
tags = nltk.pos_tag(tokens)
tag_list = [x[1] for x in tags]
#for i in range(0, len(tokens)):
tag_str = " ".join(tag_list)
tweet_tags.append(tag_str)
return tweet_tags
###########################################################################################
'''Preprocess End'''
###########################################################################################
warnings.simplefilter(action='ignore', category=FutureWarning)
#######################################################
'''Construct tfidf matrix and get relevant scores'''
#######################################################
tf_array = tf_vectorizer.fit_transform(input['text']).toarray()
tfidf_array = tf_array*idf_vector
print ("Built TF-IDF array")
#################################################
'''Construct POS TF matrix and get vocab dict'''
#################################################
pos_tags = get_pos_tags(input['text'])
pos_array = pos_vectorizer.fit_transform(pos_tags).toarray()
print ("Built POS array")
###################################################
''' Get features'''
###################################################
other_feats = get_feature_array(input['text'])
print ("Built other features array")
#Now join them all up
X = np.concatenate([tfidf_array,pos_array,other_feats],axis=1)
print(X.shape)
#####################################################
'''Running the Model'''
#####################################################
print ("Running classification model...")
y_preds = model.predict(X)
print ("Loading data to classify...")
# def class_to_name(class_label):
# """
# This function can be used to map a numeric
# feature name to a particular class.
# """
# if class_label == 0:
# return "Hate speech"
# elif class_label == 1:
# return "Offensive language"
# elif class_label == 2:
# return "Neither"
# else:
# return "No label"
hate = 0
hurtful = 0
neither = 0
for x in y_preds:
if str(x) == '0':
hate +=1
elif str(x) == '1':
hurtful += 1
elif str(x) == '2':
neither += 1
print ("Printing predicted values: ")
print(f'Hateful tweets: {hate}; % of total: {hate/(hate+hurtful+neither)}')
#hate_results = f'Hateful tweets: {hate}; % of total: {hate/(hate+hurtful+neither)}'
print(f'Hurtful tweets: {hurtful}; % of total: {hurtful/(hate+hurtful+neither)}')
#hurtful_results = f'Hurtful tweets: {hurtful}; % of total: {hurtful/(hate+hurtful+neither)}'
print(f'Neither tweets: {neither}; % of total: {neither/(hate+hurtful+neither)}')
#neither_results = f'Neither tweets: {neither}; % of total: {neither/(hate+hurtful+neither)}'
results = {
'hate_data':{'count':hate,
'percentTotal':int((hate/(hate+hurtful+neither))*100)},
'hurt_data':{'count':hurtful,
'percentTotal':int((hurtful/(hate+hurtful+neither))*100)},
'neither_data':{'count':neither,
'percentTotal':int((neither/(hate+hurtful+neither))*100)},
'total_count':hate+hurtful+neither
}
return results
def __init__(self):
self.sentiment_analyzer = VS()
from json import loads
from hatebase import HatebaseAPI
from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer as VS
# hatebase = HatebaseAPI({"key": key})
# filters = {'about_nationality': '1', 'language': 'eng'}
# output = "json"
# query_type = "sightings"
# response = hatebase.performRequest(filters, output, query_type)
#
# # convert to Python object
# response = loads(response)
# print response
sentences = [
"VADER is full of crap.", # positive sentence example
"VADER is not smart, handsome, nor funny.", # negation sentence example
"VADER is smart, handsome, and funny!", # punctuation emphasis handled correctly (sentiment intensity adjusted)
"VADER is very smart, handsome, and funny."
]
analyzer = VS()
for sentence in sentences:
vs = analyzer.polarity_scores(sentence)
# print("{:-<65} {}".format(sentence, str(vs)))
print sentence, vs
class SentimentVectorizer(BaseEstimator, TransformerMixin):
sentiment_analyzer = VS()
def count_twitter_objs(self, text_string):
"""
Accepts a text string and replaces:
1) urls with URLHERE
2) lots of whitespace with one instance
3) mentions with MENTIONHERE
4) hashtags with HASHTAGHERE
This allows us to get standardized counts of urls and mentions
Without caring about specific people mentioned.
Returns counts of urls, mentions, and hashtags.
"""
space_pattern = '\s+'
giant_url_regex = ('http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|'
'[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+')
mention_regex = '@[\w\-]+'
hashtag_regex = '#[\w\-]+'
parsed_text = re.sub(space_pattern, ' ', text_string)
parsed_text = re.sub(giant_url_regex, 'URLHERE', parsed_text)
parsed_text = re.sub(mention_regex, 'MENTIONHERE', parsed_text)
parsed_text = re.sub(hashtag_regex, 'HASHTAGHERE', parsed_text)
return(parsed_text.count('URLHERE'),parsed_text.count('MENTIONHERE'),parsed_text.count('HASHTAGHERE'))
def other_features(self, tweet):
"""This function takes a string and returns a list of features.
These include Sentiment scores, Text and Readability scores,
as well as Twitter specific features"""
sentiment = self.sentiment_analyzer.polarity_scores(tweet)
words = preprocess(tweet) #Get text only
syllables = textstat.syllable_count(words)
num_chars = sum(len(w) for w in words)
num_chars_total = len(tweet)
num_terms = len(tweet.split())
num_words = len(words.split())
avg_syl = round(float((syllables+0.001))/float(num_words+0.001),4)
num_unique_terms = len(set(words.split()))
###Modified FK grade, where avg words per sentence is just num words/1
FKRA = round(float(0.39 * float(num_words)/1.0) + float(11.8 * avg_syl) - 15.59,1)
##Modified FRE score, where sentence fixed to 1
FRE = round(206.835 - 1.015*(float(num_words)/1.0) - (84.6*float(avg_syl)),2)
twitter_objs = self.count_twitter_objs(tweet)
retweet = 0
if "rt" in words:
retweet = 1
features = [FKRA, FRE,syllables, avg_syl, num_chars, num_chars_total, num_terms, num_words,
num_unique_terms, sentiment['neg'], sentiment['pos'], sentiment['neu'], sentiment['compound'],
twitter_objs[2], twitter_objs[1],
twitter_objs[0], retweet]
return features
def get_feature_array(self, tweets):
feats=[]
for t in tweets:
feats.append(self.other_features(t))
return np.array(feats)
def fit(self, X, y=None):
return self
def transform(self, X, y=None):
return self.get_feature_array(X)
def predict(x):
model = load("model.ml")
tweets = x
stopwords = stopwords = nltk.corpus.stopwords.words("english")
other_exclusions = ["#ff", "ff", "rt"]
stopwords.extend(other_exclusions)
stemmer = PorterStemmer()
def preprocess(text_string):
"""
Accepts a text string and replaces:
1) urls with URLHERE
2) lots of whitespace with one instance
3) mentions with MENTIONHERE
This allows us to get standardized counts of urls and mentions
Without caring about specific people mentioned
"""
space_pattern = '\s+'
giant_url_regex = ('http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|'
'[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+')
mention_regex = '@[\w\-]+'
parsed_text = re.sub(space_pattern, ' ', text_string)
parsed_text = re.sub(giant_url_regex, '', parsed_text)
parsed_text = re.sub(mention_regex, '', parsed_text)
return parsed_text
def tokenize(tweet):
"""Removes punctuation & excess whitespace, sets to lowercase,
and stems tweets. Returns a list of stemmed tokens."""
tweet = " ".join(re.split("[^a-zA-Z]*", tweet.lower())).strip()
tokens = [stemmer.stem(t) for t in tweet.split()]
return tokens
def basic_tokenize(tweet):
"""Same as tokenize but without the stemming"""
tweet = " ".join(re.split("[^a-zA-Z.,!?]*", tweet.lower())).strip()
return tweet.split()
vectorizer = TfidfVectorizer(
tokenizer=tokenize,
preprocessor=preprocess,
ngram_range=(1, 3),
stop_words=stopwords,
use_idf=True,
smooth_idf=False,
norm=None,
decode_error='replace',
max_features=10000,
min_df=5,
max_df=0.75
)
# Construct tfidf matrix and get relevant scores
tfidf = vectorizer.fit_transform(tweets).toarray()
vocab = {v: i for i, v in enumerate(vectorizer.get_feature_names())}
idf_vals = vectorizer.idf_
idf_dict = {i: idf_vals[i] for i in vocab.values()} # keys are indices; values are IDF scores
# Get POS tags for tweets and save as a string
import nltk
nltk.download('averaged_perceptron_tagger')
tweet_tags = []
for t in tweets:
tokens = basic_tokenize(preprocess(t))
tags = nltk.pos_tag(tokens)
tag_list = [x[1] for x in tags]
tag_str = " ".join(tag_list)
tweet_tags.append(tag_str)
# We can use the TFIDF vectorizer to get a token matrix for the POS tags
pos_vectorizer = TfidfVectorizer(
tokenizer=None,
lowercase=False,
preprocessor=None,
ngram_range=(1, 3),
stop_words=None,
use_idf=False,
smooth_idf=False,
norm=None,
decode_error='replace',
max_features=5000,
min_df=5,
max_df=0.75,
)
# Construct POS TF matrix and get vocab dict
pos = pos_vectorizer.fit_transform(pd.Series(tweet_tags)).toarray()
pos_vocab = {v: i for i, v in enumerate(pos_vectorizer.get_feature_names())}
# Now get other features
sentiment_analyzer = VS()
def count_twitter_objs(text_string):
"""
Accepts a text string and replaces:
1) urls with URLHERE
2) lots of whitespace with one instance
3) mentions with MENTIONHERE
4) hashtags with HASHTAGHERE
This allows us to get standardized counts of urls and mentions
Without caring about specific people mentioned.
Returns counts of urls, mentions, and hashtags.
"""
space_pattern = '\s+'
giant_url_regex = ('http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|'
'[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+')
mention_regex = '@[\w\-]+'
hashtag_regex = '#[\w\-]+'
parsed_text = re.sub(space_pattern, ' ', text_string)
parsed_text = re.sub(giant_url_regex, 'URLHERE', parsed_text)
parsed_text = re.sub(mention_regex, 'MENTIONHERE', parsed_text)
parsed_text = re.sub(hashtag_regex, 'HASHTAGHERE', parsed_text)
return (parsed_text.count('URLHERE'), parsed_text.count('MENTIONHERE'), parsed_text.count('HASHTAGHERE'))
def other_features(tweet):
"""This function takes a string and returns a list of features.
These include Sentiment scores, Text and Readability scores,
as well as Twitter specific features"""
sentiment = sentiment_analyzer.polarity_scores(tweet)
words = preprocess(tweet) # Get text only
syllables = textstat.syllable_count(words)
num_chars = sum(len(w) for w in words)
num_chars_total = len(tweet)
num_terms = len(tweet.split())
num_words = len(words.split())
avg_syl = round(float((syllables + 0.001)) / float(num_words + 0.001), 4)
num_unique_terms = len(set(words.split()))
###Modified FK grade, where avg words per sentence is just num words/1
FKRA = round(float(0.39 * float(num_words) / 1.0) + float(11.8 * avg_syl) - 15.59, 1)
##Modified FRE score, where sentence fixed to 1
FRE = round(206.835 - 1.015 * (float(num_words) / 1.0) - (84.6 * float(avg_syl)), 2)
twitter_objs = count_twitter_objs(tweet)
retweet = 0
if "rt" in words:
retweet = 1
features = [FKRA, FRE, syllables, avg_syl, num_chars, num_chars_total, num_terms, num_words,
num_unique_terms, sentiment['neg'], sentiment['pos'], sentiment['neu'], sentiment['compound'],
twitter_objs[2], twitter_objs[1],
twitter_objs[0], retweet]
# features = pandas.DataFrame(features)
return features
def get_feature_array(tweets):
feats = []
for t in tweets:
feats.append(other_features(t))
return np.array(feats)
other_features_names = ["FKRA", "FRE", "num_syllables", "avg_syl_per_word", "num_chars", "num_chars_total",
"num_terms", "num_words", "num_unique_words", "vader neg", "vader pos", "vader neu",
"vader compound", "num_hashtags", "num_mentions", "num_urls", "is_retweet"]
feats = get_feature_array(tweets)
# Now join them all up
M = np.concatenate([tfidf, pos, feats], axis=1)
X = pd.DataFrame(M)
return model.predict([[X]])[0]
def get_features(tweets):
sentiment_analyzer = VS()
stopwords=stopwords = nltk.corpus.stopwords.words("english")
other_exclusions = ["#ff", "ff", "rt"]
stopwords.extend(other_exclusions)
vectorizer = TfidfVectorizer(
tokenizer=tokenize,
preprocessor=preprocess,
ngram_range=(1, 3),
stop_words=stopwords,
use_idf=True,
smooth_idf=False,
norm=None,
decode_error='replace',
max_features=10000,
max_df = 0.501,
min_df=5,
)
# Construct tfidf matrix and get relevant scores
tfidf = vectorizer.fit_transform(tweets).toarray()
vocab = {v:i for i, v in enumerate(vectorizer.get_feature_names())}
idf_vals = vectorizer.idf_
idf_dict = {i:idf_vals[i] for i in vocab.values()} #keys are indices; values are IDF scores
# Get POS tags for tweets and save as a string
tweet_tags = []
for t in tweets:
tokens = basic_tokenize(preprocess(t))
tags = nltk.pos_tag(tokens)
tag_list = [x[1] for x in tags]
tag_str = " ".join(tag_list)
tweet_tags.append(tag_str)
# We can use the TFIDF vectorizer to get a token matrix for the POS tags
pos_vectorizer = TfidfVectorizer(
tokenizer=None,
lowercase=False,
preprocessor=None,
ngram_range=(1, 3),
stop_words=None, #We do better when we keep stopwords
use_idf=False,
smooth_idf=False,
norm=None, #Applies l2 norm smoothing
decode_error='replace',
max_features=5000,
min_df=5,
max_df = 0.501
)
pos = pos_vectorizer.fit_transform(pd.Series(tweet_tags)).toarray()
pos_vocab = {v:i for i, v in enumerate(pos_vectorizer.get_feature_names())}
sentiment_analyzer = VS()
other_features_names = ["FKRA", "FRE","num_syllables", "avg_syl_per_word", "num_chars", "num_chars_total", \
"num_terms", "num_words", "num_unique_words", "vader neg","vader pos","vader neu", "vader compound", \
"num_hashtags", "num_mentions", "num_urls", "is_retweet"]
feats = get_feature_array(tweets)
X = np.concatenate([tfidf,pos,feats],axis=1)
return X, vectorizer, tfidf, pos_vectorizer
def wrangle2(text):
stopwords=pd.read_table("english").values.tolist()
other_exclusions = ["#ff", "ff", "rt"]
stopwords.extend(other_exclusions)
stemmer = PorterStemmer()
def clean(text):
spaces = '\s+'
urls = ('http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|'
'[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+')
mentions = '@[\w\-]+'
parsed_text = re.sub(spaces, ' ', text)
parsed_text = re.sub(urls, '', parsed_text)
parsed_text = re.sub(mentions, '', parsed_text)
return parsed_text
def tokenize(text):
text = " ".join(re.split("[^a-zA-Z]*", text.lower())).strip()
tokens = [stemmer.stem(t) for t in text.split()]
return tokens
vectorizer = TfidfVectorizer(
tokenizer=tokenize,
preprocessor=clean,
ngram_range=(1, 3),
stop_words=stopwords,
use_idf=True,
smooth_idf=False,
norm=None,
decode_error='replace',
max_features=10000,
min_df=5,
max_df=0.501
)
tfidf = vectorizer.transform(text).toarray()
vocab = {v:i for i, v in enumerate(vectorizer.get_feature_names())}
idf_vals = vectorizer.idf_
idf_dict = {i:idf_vals[i] for i in vocab.values()}
sentiment_analyzer = VS()
def count_twitter_objs(text):
space_pattern = '\s+'
giant_url_regex = ('http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|'
'[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+')
mention_regex = '@[\w\-]+'
hashtag_regex = '#[\w\-]+'
parsed_text = re.sub(space_pattern, ' ', text)
parsed_text = re.sub(giant_url_regex, 'URLHERE', parsed_text)
parsed_text = re.sub(mention_regex, 'MENTIONHERE', parsed_text)
parsed_text = re.sub(hashtag_regex, 'HASHTAGHERE', parsed_text)
return(parsed_text.count('URLHERE'),parsed_text.count('MENTIONHERE'),parsed_text.count('HASHTAGHERE'))
def other_features(text):
sentiment = sentiment_analyzer.polarity_scores(text)
words = clean(text) #Get text only
syllables = textstat.syllable_count(words) #count syllables in words
num_chars = sum(len(w) for w in words) #num chars in words
num_chars_total = len(text)
num_terms = len(text.split())
num_words = len(words.split())
avg_syl = round(float((syllables+0.001))/float(num_words+0.001),4)
num_unique_terms = len(set(words.split()))
FKRA = round(float(0.39 * float(num_words)/1.0) + float(11.8 * avg_syl) - 15.59,1)
FRE = round(206.835 - 1.015*(float(num_words)/1.0) - (84.6*float(avg_syl)),2)
twitter_objs = count_twitter_objs(text) #Count #, @, and http://
retweet = 0
if "rt" in words:
retweet = 1
features = [FKRA, FRE,syllables, avg_syl, num_chars, num_chars_total, num_terms, num_words,
num_unique_terms, sentiment['neg'], sentiment['pos'], sentiment['neu'], sentiment['compound'],
twitter_objs[2], twitter_objs[1],
twitter_objs[0], retweet]
return features
def get_feature_array(text):
feats=[]
for t in text:
feats.append(other_features(t))
return np.array(feats)
feats = get_feature_array(text)
all = np.concatenate([tfidf,feats],axis=1)
other_features_names = ["FKRA", "FRE","num_syllables", "avg_syl_per_word", "num_chars", "num_chars_total", \
"num_terms", "num_words", "num_unique_words", "vader neg","vader pos","vader neu", "vader compound", \
"num_hashtags", "num_mentions", "num_urls", "is_retweet"]
variables = ['']*len(vocab)
for k,v in vocab.items():
variables[v] = k
features = variables+other_features_names
X = pd.DataFrame(all)
return X
def getValue():
stopwords=stopwords = nltk.corpus.stopwords.words("english")
other_exclusions = ["#ff", "ff", "rt"]
stopwords.extend(other_exclusions)
sentiment_analyzer = VS()
stemmer = PorterStemmer()
def preprocess(text_string):
"""
Accepts a text string and replaces:
1) urls with URLHERE
2) lots of whitespace with one instance
3) mentions with MENTIONHERE
This allows us to get standardized counts of urls and mentions
Without caring about specific people mentioned
"""
space_pattern = '\s+'
giant_url_regex = ('http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|'
'[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+')
mention_regex = '@[\w\-]+'
parsed_text = re.sub(space_pattern,' ', str(text_string))
parsed_text = re.sub(giant_url_regex, 'URLHERE', parsed_text)
parsed_text = re.sub(mention_regex, 'MENTIONHERE', parsed_text)
#parsed_text = parsed_text.code("utf-8", errors='ignore')
return parsed_text
def tokenize(tweet):
"""Removes punctuation & excess whitespace, sets to lowercase,
and stems tweets. Returns a list of stemmed tokens."""
tweet = " ".join(re.split("[^a-zA-Z]*", tweet.lower())).strip()
#tokens = re.split("[^a-zA-Z]*", tweet.lower())
tokens = [stemmer.stem(t) for t in tweet.split()]
return tokens
def basic_tokenize(tweet):
"""Same as tokenize but without the stemming"""
tweet = " ".join(re.split("[^a-zA-Z.,!?]*", tweet.lower())).strip()
#print tweet
return tweet
def get_pos_tags(tweets):
"""Takes a list of strings (tweets) and
returns a list of strings of (POS tags).
"""
tweet_tags = []
#for t in tweets:
tokens = basic_tokenize(preprocess(tweets))
tags = nltk.pos_tag(tokens)
tag_list = [x[1] for x in tags]
#for i in range(0, len(tokens)):
tag_str = " ".join(tag_list)
tweet_tags.append(tag_str)
return tweet_tags
def count_twitter_objs(text_string):
"""
Accepts a text string and replaces:
1) urls with URLHERE
2) lots of whitespace with one instance
3) mentions with MENTIONHERE
4) hashtags with HASHTAGHERE
This allows us to get standardized counts of urls and mentions
Without caring about specific people mentioned.
Returns counts of urls, mentions, and hashtags.
"""
space_pattern = '\s+'
giant_url_regex = ('http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|'
'[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+')
mention_regex = '@[\w\-]+'
hashtag_regex = '#[\w\-]+'
parsed_text = re.sub(space_pattern, ' ', text_string)
parsed_text = re.sub(giant_url_regex, 'URLHERE', parsed_text)
parsed_text = re.sub(mention_regex, 'MENTIONHERE', parsed_text)
parsed_text = re.sub(hashtag_regex, 'HASHTAGHERE', parsed_text)
return(parsed_text.count('URLHERE'),parsed_text.count('MENTIONHERE'),parsed_text.count('HASHTAGHERE'))
def other_features_(tweet):
"""This function takes a string and returns a list of features.
These include Sentiment scores, Text and Readability scores,
as well as Twitter specific features.
This is modified to only include those features in the final
model."""
sentiment = sentiment_analyzer.polarity_scores(tweet)
words = preprocess(tweet) #Get text only
syllables = textstat.syllable_count(words) #count syllables in words
num_chars = sum(len(w) for w in words) #num chars in words
num_chars_total = len(tweet)
num_terms = len(tweet.split())
num_words = len(words.split())
avg_syl = round(float((syllables+0.001))/float(num_words+0.001),4)
num_unique_terms = len(set(words.split()))
###Modified FK grade, where avg words per sentence is just num words/1
FKRA = round(float(0.39 * float(num_words)/1.0) + float(11.8 * avg_syl) - 15.59,1)
##Modified FRE score, where sentence fixed to 1
FRE = round(206.835 - 1.015*(float(num_words)/1.0) - (84.6*float(avg_syl)),2)
twitter_objs = count_twitter_objs(tweet) #Count #, @, and http://
features = [FKRA, FRE, syllables, num_chars, num_chars_total, num_terms, num_words,
num_unique_terms, sentiment['compound'],
twitter_objs[2], twitter_objs[1],]
#features = pandas.DataFrame(features)
return features
def get_oth_features(tweets):
"""Takes a list of tweets, generates features for
each tweet, and returns a numpy array of tweet x features"""
feats=[]
for t in tweets:
feats.append(other_features_(t))
return np.array(feats)
def transform_inputs(tweets, tf_vectorizer, idf_vector, pos_vectorizer):
"""
This function takes a list of tweets, along with used to
transform the tweets into the format accepted by the model.
Each tweet is decomposed into
(a) An array of TF-IDF scores for a set of n-grams in the tweet.
(b) An array of POS tag sequences in the tweet.
(c) An array of features including sentiment, vocab, and readability.
Returns a pandas dataframe where each row is the set of features
for a tweet. The features are a subset selected using a Logistic
Regression with L1-regularization on the training data.
"""
tf_array = tf_vectorizer.fit_transform(tweets).toarray()
tfidf_array = tf_array*idf_vector
print ("Built TF-IDF array")
#print tweets
pos_tags = get_pos_tags(tweets)
#print get_pos_tags(tweets)
pos_array = pos_vectorizer.fit_transform(pos_tags).toarray()
print ("Built POS array")
#print pos_vectorizer.fit_transform(pos_tags).toarray()
oth_array = get_oth_features(tweets)
print ("Built other feature array")
#print get_oth_features(tweets)
M = np.concatenate([tfidf_array, pos_array, oth_array],axis=1)
return pd.DataFrame(M)
def predictions(X, model):
"""
This function calls the predict function on
the trained model to generated a predicted y
value for each observation.
"""
y_preds = model.predict(X)
return y_preds
def class_to_name(class_label):
"""
This function can be used to map a numeric
feature name to a particular class.
"""
if class_label == 0:
return "Hate speech"
elif class_label == 1:
return "Offensive language"
elif class_label == 2:
return "Neither"
else:
return "No label"
def get_tweets_predictions(tweets, perform_prints=True):
fixed_tweets = []
#for i, t_orig in enumerate(tweets):
s = tweets
try:
s = s.encode("latin1")
except:
try:
s = s.encode("utf-8")
except:
pass
if type(s) != unicode:
fixed_tweets.append(unicode(s, errors="ignore"))
else:
fixed_tweets.append(s)
#print fixed_tweets
print tweets
#assert len(tweets) == len(fixed_tweets), "shouldn't remove any tweets"
tweets = fixed_tweets
print (len(tweets), " tweets to classify")
print ("Loading trained classifier... ")
model = joblib.load('final_model.pkl')
print ("Loading other information...")
tf_vectorizer = joblib.load('final_tfidf.pkl')
idf_vector = joblib.load('final_idf.pkl')
pos_vectorizer = joblib.load('final_pos.pkl')
#Load ngram dict
#Load pos dictionary
#Load function to transform data
print ("Transforming inputs...")
X = transform_inputs(tweets, tf_vectorizer, idf_vector, pos_vectorizer)
print ("Running classification model...")
predicted_class = predictions(X, model)
return predicted_class
def initial(comt):
print ("Loading data to classify...")
#Tweets obtained here: https://github.com/sashaperigo/Trump-Tweets
trump_tweets = comt
trump_predictions = get_tweets_predictions(trump_tweets)
print ("Printing predicted values: ")
#for i,t in enumerate(trump_tweets):
#print t
ans = class_to_name(trump_predictions)
print(ans)
return ans
if request.form['submit_but'] == 'predict':
comt = request.form['comt']
my_prediction=initial(comt)
return render_template('demoForm.html',val=comt,res = my_prediction)
if request.form['submit_but'] == 'twitter':
tweet2classify = rt.randtweet().encode('utf-8')
#print(tweet2classify)
try:
tweet2classify = tweet2classify.encode("latin1")
except:
try:
tweet2classify = tweet2classify.encode("utf-8")
except:
pass
if type(tweet2classify) != unicode:
tweet2classify=unicode(tweet2classify, errors="ignore")
else:
tweet2classify=tweet2classify
my_prediction=initial(tweet2classify)
return render_template('demoForm.html',val=tweet2classify,res = my_prediction)
def __init__(self,lang='en'):
self.lang = lang
self.stopwords = None
self.stemmer = None
self.sentiment_analyzer = None
self.text_processor = None
INDIC_NLP_RESOURCES=r"../model/indic_nlp_resources/"
common.set_resources_path(INDIC_NLP_RESOURCES)
self.pos_tagger = None
if lang == 'hi':
self.ht = HindiTokenizer.Tokenizer()
self.sentiment_analyzer = load_learner(path="../model/hi-sentiment")
self.stopwords = [x.strip() for x in open("../data/stopwords.txt").readlines()]
other_exclusions = ["#ff", "ff", "rt"]
self.stopwords.extend(other_exclusions)
self.stemmer = None
self.text_processor = TextPreProcessor(
# terms that will be normalized
normalize=['url', 'email', 'percent', 'money', 'phone', 'user',
'time', 'url', 'date', 'number'],
# terms that will be annotated
annotate={"hashtag", "allcaps", "elongated", "repeated",
'emphasis', 'censored'},
fix_html=True, # fix HTML tokens
)
loader.load()
train_data = indian.tagged_sents('hindi.pos')
self.tnt_pos_tagger = tnt.TnT()
self.tnt_pos_tagger.train(train_data)
if lang == 'en':
self.sentiment_analyzer = VS()
self.stopwords = nltk.corpus.stopwords.words("english")
other_exclusions = ["#ff", "ff", "rt"]
self.stopwords.extend(other_exclusions)
self.stemmer = PorterStemmer()
self.text_processor = TextPreProcessor(
# terms that will be normalized
normalize=['url', 'email', 'percent', 'money', 'phone', 'user',
'time', 'url', 'date', 'number'],
# terms that will be annotated
annotate={"hashtag", "allcaps", "elongated", "repeated",
'emphasis', 'censored'},
fix_html=True, # fix HTML tokens
# corpus from which the word statistics are going to be used
# for word segmentation
segmenter="twitter",
# corpus from which the word statistics are going to be used
# for spell correction
corrector="twitter",
unpack_hashtags=True, # perform word segmentation on hashtags
unpack_contractions=True, # Unpack contractions (can't -> can not)
spell_correct_elong=False, # spell correction for elongated words
# select a tokenizer. You can use SocialTokenizer, or pass your own
# the tokenizer, should take as input a string and return a list of tokens
tokenizer=SocialTokenizer(lowercase=True).tokenize,
# list of dictionaries, for replacing tokens extracted from the text,
# with other expressions. You can pass more than one dictionaries.
dicts=[emoticons,slang]
)