class SentimentScore:
"""Vader sentiment score."""
analyzer = vader.SentimentIntensityAnalyzer()
def __init__(self, text: str, score: ScoreDict = None) -> None:
"""Create a new sentiment score."""
if score is None:
score = SentimentScore.analyzer.polarity_scores(text)
self.text = text
self.score = score
def __repr__(self) -> str:
"""Return a serialized, machine-readable representation of self."""
return f"SentimentScore({repr(self.text)}, score={repr(self.score)})"
def __str__(self) -> str:
"""Return a human-readable string representation of self."""
return '\n'.join((repr(self), repr(self.score)))
def to_dict(self) -> Dict[str, Any]:
"""Return a dictionary including, sentiment scores and bar color."""
score: Dict[str, Any] = self.score.copy()
score['color'] = self.color
score['text'] = self.text
return score
@property
def color(self) -> RGBColor:
"""Return (red, green, blue) indicating sentiment."""
red = self.score['neg']
green = self.score['pos']
blue = self.score['neu']
return (red, green, blue)
def sentiment_analyzer(reviews_collection_text):
sia = vader.SentimentIntensityAnalyzer()
with open('data/reviews_%s' % reviews_collection_text, 'r') as f:
comments = f.readlines()
pos_comments = [
comment for comment in comments
if sia.polarity_scores(comment)['compound'] > 0
]
neg_comments = [
comment for comment in comments
if sia.polarity_scores(comment)['compound'] < 0
]
neu_comments = [
comment for comment in comments
if comment not in pos_comments and comment not in neg_comments
]
with open('data/reviews_%s_pos' % reviews_collection_text, 'w') as f:
for pos_comment in pos_comments:
f.write('%s' % pos_comment)
with open('data/reviews_%s_neg' % reviews_collection_text, 'w') as f:
for neg_comment in neg_comments:
f.write('%s' % neg_comment)
with open('data/reviews_%s_neu' % reviews_collection_text, 'w') as f:
for neu_comment in neu_comments:
f.write('%s' % neu_comment)
def extract_sentiment(dataframe):
"""
This function scores each word token in the tweet, combines
the scores within a tweet to give an overall sentiment score.
The scores for each tweet is appended as a new column 'sentiment_score'
to the supplied dataframe and returned.
Sentiment is extracted using the `Vader sentiment intensity
analyzer`. A sentiment indicates the view or opinion
expressed. This opinion can be positive or negative.
It is represented as a floating point decimal, where 0
indicates neutral sentiment, negative values for negative
sentiments and positive for positive sentiments.
Args:
dataframe (pandas.DataFrame):
The dataframe that holds the twitter data.
The dataframe must contain the processed_text column.
Returns:
pd.DataFrame:
A dataframe that holds the twitter data. Including a new
column 'sentiment_score' holding the sum of compounded
word tokens sentiment scores of processed_text.
"""
sia = vd.SentimentIntensityAnalyzer()
dataframe['sentiment_score'] = dataframe['processed_text']\
.apply(
lambda x: sum([
sia.polarity_scores(i)['compound']
for i in word_tokenize( ' '.join(x) )
])
)
return dataframe
def _get_title_negativity(self, article_title):
analyzer = vader.SentimentIntensityAnalyzer()
scores = analyzer.polarity_scores(str(article_title))
return (scores['neg'])
def extract_sentiment_stemmed(dataframe):
"""
Extracts the sentiment score from the stemmed token words
in the `stemmed` column of the dataframe.
Args:
dataframe (pandas.DataFrame):
a DataFrame that holds the twitter data.
requires the `stemmed` column.
Returns:
pandas.DataFrame:
a DataFrame that holds the twitter data and
contains the 'sentiment_score_stemmed' column.
Raises:
Exception: unable to process sentiment_score_stemmed when
`stemmed` column is not found.
"""
if 'stemmed' not in dataframe.columns.tolist():
raise Exception('Unable to process sentiment_score_stemmed\
when `stemmed` column is not found.')
sia = vd.SentimentIntensityAnalyzer()
dataframe['sentiment_score_stemmed'] = dataframe['stemmed']\
.apply(
lambda x: sum([
sia.polarity_scores(i)['compound']
for i in word_tokenize( ' '.join(x) )
]))
return dataframe
def conductSentimentAnalysis(allDict):
nltk.download('vader_lexicon')
senti = vader.SentimentIntensityAnalyzer()
for val in tqdm(list(allDict.values()), desc="Analyze Sentiment"):
val["sentiment"] = senti.polarity_scores(val["collatedContents"])
return
def __init__(self):
self.analyzer = sent.SentimentIntensityAnalyzer()
self.raw_tweets = None
self.get_tweets()
self.raw_tweets = self.raw_tweets[:10000]
self.train_labels = None
self.test_labels = None
def mapping_func(line):
# if 'text' in l:
compound = float(vader.SentimentIntensityAnalyzer() \
.polarity_scores(line)['compound'])
if compound < -.25:
return (0, 0, 1, 1)
elif compound > .25:
return (1, 0, 0, 1)
else:
return (0, 1, 0, 1)
def get_vader_polarity(vader_context):
'''
Calculate the sentiment polarity of a comment using VADER sentiment scoring
Output = Sentiment Polarity
'''
if vader_context == None:
return np.nan
vader_sent = vader.SentimentIntensityAnalyzer()
return vader_sent.polarity_scores(vader_context)['compound']
def nltk_vader(query, category=None, top=None, bottom=None):
'''
Core sentiment analysis. Given query object uses NLTK Vader
SentimentIntensityAnalyzer to define sentiment for each tweet. If domain is
given, incorporates supplemental information from Naive Bayes Classifier.
Assigns to query object avg rating and a normalized and unnormalized rating
to each tweet object
'''
#Original code
if category == 'movie':
with open('get_rating/movie_terms.json') as f:
movie_terms = json.load(f)
sid = vd.SentimentIntensityAnalyzer()
avg_rating = 0
num_valenced = 0
best_score = 0
worst_score = 0
X_max = 85
X_min = 15
for tweet in query.tweets:
scores = sid.polarity_scores(tweet.text)
tweet.rate = scores['compound']
if category == 'movie':
for word in tweet.text.lower().split():
if word in movie_terms:
tweet.rate += movie_terms[word]
tweet.norm_rate = (((tweet.rate * 50 + 50) - X_min) /
(X_max - X_min)) * 100
if tweet.rate > best_score:
best = tweet
best_score = tweet.rate
elif tweet.rate < worst_score:
worst = tweet
worst_score = tweet.rate
avg_rating += tweet.rate
num_valenced += (tweet.rate != 0)
if top or bottom:
tweets_sorted = sorted(query.tweets, key=lambda x: x.norm_rate)
if top:
for t in tweets_sorted[-10:]:
query.top_tweets.append((t.text, t.norm_rate))
if bottom:
for t in tweets_sorted[:10]:
query.bottom_tweets.append((t.text, t.norm_rate))
if num_valenced == 0:
pass
else:
query.avg_rate = (avg_rating / float(num_valenced)) * 50 + 50
X_std = (query.avg_rate - X_min) / (X_max - X_min)
query.avg_rate = X_std * 100
query.best = best
query.worst = worst
def post(self):
args = parser.parse_args()
vaderObj = vader.SentimentIntensityAnalyzer()
res = vaderObj.polarity_scores(args.statement)
print res['compound']
if res['compound'] < 0:
return {'res': 'Sentiment is negative'}, 201
elif res['compound'] > 0:
return {'res': 'Sentiment is positive'}, 201
else:
return {'res': 'Sentiment is neutral'}, 201
def combineTopicSentiment(patDF, noteDF, noteCol, docTopics, nTopic):
# standard sentiment analysis using textblob
sid = vader.SentimentIntensityAnalyzer()
return pd.concat([
patDF,
pd.DataFrame(docTopics,
columns=["topic_" + str(i) for i in range(nTopic)
]), noteDF[noteCol].apply(analyze_sentiment),
noteDF[noteCol].apply(lambda x: analyze_vader_sent(x, sid))
],
axis=1)
def process(self, document_field):
'''Added sentiment based on Vader'''
try:
senti = vader.SentimentIntensityAnalyzer()
sentimentscores = senti.polarity_scores(document_field)
return sentimentscores
except LookupError:
from nltk import download
download('vader_lexicon')
logger.error(
"Couldn't find Vader Lexicon, downloaded it\nYou will have to re-run the processor"
)
def sentiment_cal(title,intro,body):
sia = vad.SentimentIntensityAnalyzer()
tscore = sia.polarity_scores(title)
iscore= sia.polarity_scores(intro)
bscore= sia.polarity_scores(body)
tscore = float(tscore['neg'])
iscore = float(iscore['compound'])
bscore = float(bscore['compound'])
#max_pos,max_neg=1.0,-1.0
score=(tscore+iscore+bscore)
return round(score,2)
def determineSentiment(texts):
"""
Determines the sentiment of a tweet based on the vader module
:param text: Tweet as a string
:return: Returns a dict of {neg:x, neu:y, pos:z, compound:w}
"""
sentiment = []
for text in texts:
# Adding 1.0 because Naive Bayes doesnt do well with negative values.
sentiment.append(vader.SentimentIntensityAnalyzer().polarity_scores(
text)['compound'] + 1.0)
return sparse.csr_matrix(sentiment, dtype='float').T
def getSentiment(self):
self.tweetSentiment = self.tweetDf[['date', 'tweet']]
if self.lang == 'pt':
s = leia.SentimentIntensityAnalyzer()
self.tweetSentiment['textPolarity'] = self.tweetSentiment.tweet.apply(lambda frase: s.polarity_scores(frase)['compound'])
elif self.lang == 'en':
a = vader.SentimentIntensityAnalyzer()
self.tweetSentiment['textPolarity'] = self.tweetSentiment.tweet.apply(lambda frase: a.polarity_scores(frase)['compound'])
else:
raise Exception('Please type \'pt\' for Portuguese or \'en\' for English')
del self.tweetSentiment['tweet']
def get_review_sentiments(positive_reviews, negative_reviews):
sia = vader.SentimentIntensityAnalyzer()
positive_compound_scores = [
sentiment_calculator(sia, positive_review)
for positive_review in positive_reviews
]
negative_compound_scores = [
sentiment_calculator(sia, negative_review)
for negative_review in negative_reviews
]
return {
'results-on-positive': positive_compound_scores,
'results-on-negative': negative_compound_scores
}
def sentimentListCalculation(feedbacks):
pos = {}
neg = {}
sia = vader.SentimentIntensityAnalyzer()
for fd in feedbacks:
score = sia.polarity_scores(fd)
count = len(word_tokenize(fd))
if (score['compound'] > 0):
pos[fd] = score['pos']
else:
neg[fd] = score['neg']
return (pos, neg)
def create_ml_features(self):
'''
Create features from these textual data
'''
for coinDetail in self.detailsList:
savePath = os.path.join(self.historic_path.format(coinDetail['coinname']), "interpreted/data-{}.csv".format(self.algo_name))
if (not(os.path.isfile(savePath))):
path = os.path.join(self.historic_path.format(coinDetail['coinname']), "raw")
combinedCsv = os.path.join(path, "combined.csv")
if os.path.isfile(combinedCsv):
df = pd.read_csv(combinedCsv, lineterminator='\n')
self.logger.info("CSV file read for {}".format(coinDetail['coinname']))
df['Tweet'] = cleanData(df['Tweet'])
self.logger.info("Tweets Cleaned")
df['Time'] = pd.to_datetime(df['Time'], unit='s')
df = df.set_index('Time')
self.logger.info("Calculating sentiment")
analyzer = vader.SentimentIntensityAnalyzer()
df['sentiment'] = df['Tweet'].swifter.apply(applyVader, analyzer=analyzer)
self.logger.info("Now calculating features")
df = applyParallel(df.groupby(pd.Grouper(freq='H')), self.f_add_features)
df['Time'] = pd.date_range(df['Time'].iloc[0], df['Time'].iloc[-1], periods=df['Time'].shape[0])
self.logger.info("Features Calculated")
df['variation_all'] = df['n_bullish_all'].diff()
df = df.drop(['n_bullish_all', 'n_bearish_all'], axis=1)
df['mean_vader_change_top'] = df['mean_vader_top'].diff()
#add botorNot too
df = trends_ta(df, 'mean_vader_top')
df = trends_ta(df, 'mean_vader_all')
df = df.replace(np.inf, 0)
df = df.replace(-np.inf, 0)
df = df.replace(np.nan, 0)
df.to_csv(savePath, index=None)
self.logger.info("Added all features. Saved to {}".format(savePath))
else:
self.logger.info("{} does not exists so skipping".format(combinedCsv))
else:
self.logger.info("Using the cached file from {}".format(savePath))
def plot_trend(res_fname, res_name):
fname = 'project/reviews_data/{}.html'.format(res_fname)
df = pd.read_html(fname, header=0)[0]
df['date'] = pd.to_datetime(df['date'])
senti = vader.SentimentIntensityAnalyzer()
df["sentiment"] = df["text"].apply(
lambda x: senti.polarity_scores(x)["compound"])
# print("Pearsons coeff", round(pearsonr(df["sentiment"], df["stars"])[0], 2))
df['year'], df['month'] = df['date'].dt.year, df['date'].dt.month
df = df[df['year'] >= 2015]
mean_stars = df.groupby(['year', 'month'], as_index=False).mean()
mean_stars1 = df.groupby(['year', 'month'],
as_index=False)[['stars', 'sentiment'
]].agg({"mean_score": "mean"})
mean_final = mean_stars[['year', 'month', 'sentiment', 'stars']]
mean_final['period'] = mean_final['year'].astype('str').str.cat(
mean_final['month'].astype('str'), sep='-')
scaler = StandardScaler()
mean_final['stars'] = scaler.fit_transform(
np.expand_dims(mean_final['stars'], axis=1))
mean_final['sentiment'] = scaler.fit_transform(
np.expand_dims(mean_final['sentiment'], axis=1))
f, ax = plt.subplots(figsize=(100, 20))
x_col = 'period'
sns.pointplot(ax=ax, x=x_col, y='stars', data=mean_final, color='blue')
sns.pointplot(ax=ax, x=x_col, y='sentiment', data=mean_final, color='red')
plt.yticks([])
plt.ylabel('')
plt.xlabel('')
ax.legend(handles=ax.lines[::len(mean_final) + 1],
labels=["Star Rating", "Sentiment"],
fontsize=70)
ax.set_xticklabels(
[t.get_text().split("T")[0] for t in ax.get_xticklabels()])
plt.tick_params(labelsize=50)
plt.gcf().autofmt_xdate()
plt.title('Trend of Star Rating and Sentiment for ' + res_name,
fontsize=80)
plt.savefig("images/" + res_fname)
print(res_fname, pearsonr(mean_final['stars'], mean_final['sentiment'])[0])
def get_sentiment(response):
processed_response = response.replace('"','')
if vader.negated(processed_response):
sentiment = 'neg'
return 'neg'
sent = vader.SentimentIntensityAnalyzer()
score = sent.polarity_scores(processed_response)
sent_list = ['neg','neutral','pos']
neg = score['neg']
neutral = score['neu']
pos = score['pos']
sent_score = [neg,neutral,pos]
big_score = max(sent_score)
index = sent_score.index(big_score)
sentiment = sent_list[index]
return sentiment
def __sentiment(self):
sid = vader.SentimentIntensityAnalyzer()
score = sid.polarity_scores(self.poemOutput.cget("text"))['compound']
if (score >= 0.4):
print(f"score:{score}, positive")
self.poemOutput.config(bg="#d9e7d9")
elif (score < 0.4 and score > -0.4):
print(f"score:{score}, neutral")
self.poemOutput.config(bg="#e6e6e6")
else:
print(f"score:{score}, negative")
self.poemOutput.config(bg="#fcddde")
return None
def __init__(self):
self.analyzer = sent.SentimentIntensityAnalyzer()
self.raw_tweets = None
self.train_labels = None
self.test_labels = None
self.nos_train_neu = 0
self.nos_train_pos = 0
self.nos_train_neg = 0
self.nos_test_neu = 0
self.nos_test_neg = 0
self.nos_test_pos = 0
self.get_tweets()
def getPosAndNegWords(tweet):
"""
Finds positive and negative boosted words in the tweet
:param tweet: Tweet as a string
:return: Returns a list with two floats between 0 and 1. First element represent pos and second repr neg
"""
pos = 0
neg = 0
a = vader.SentimentIntensityAnalyzer()
for word in word_tokenize(tweet):
if a.polarity_scores(word)['pos'] > 0.9:
pos += 1
if a.polarity_scores(word)['neg'] > 0.9:
neg += 1
l = float(len(word_tokenize(tweet)))
return [pos / l, neg / l]
def create_sentiment():
sa = vader.SentimentIntensityAnalyzer()
import unicodecsv as csv
comments_with_sentiment = (
toolz.merge(
dict(
id=d["id"],
time=dt.datetime.utcfromtimestamp(float(d["created_utc"])).strftime("%Y-%m-%d %H:%M:%S"),
ups=d["ups"],
contr=d["controversiality"]
),
toolz.keymap(
lambda x: "vader_" + x,
sa.polarity_scores(d["body"])
),
dict(zip(
["pattern_polarity", "pattern_subjectivity"],
pattern.sentiment(d["body"])
))
)
for d in corpus.load_json(
p=None, # just do all
include_is=True,
include_oos=True,
#filter_deleted=False
)
)
with open("data-sentiment/sentiment.csv", "w") as o:
c = comments_with_sentiment.next()
writer = csv.DictWriter(o, c.keys())
writer.writeheader()
writer.writerow(c)
for c in comments_with_sentiment:
writer.writerow(c)
return 'Positive'
df['Analysis'] = df['Polarity'].apply(get_analysis)
df.tail(20)
import nltk.sentiment.vader as vd
from nltk import download
download('vader_lexicon')
# In[8]:
#Calculating Sentiment Score
sia = vd.SentimentIntensityAnalyzer()
from nltk import download
download('punkt')
from nltk.tokenize import word_tokenize
df['sentiment_score'] = df['processed_text'].apply(lambda x: sum(
[sia.polarity_scores(i)['compound'] for i in word_tokenize(' '.join(x))]))
df[['processed_text', 'sentiment_score']].head(n=10)
# In[9]:
#########################################################################################################################
#
#
################################## Text Visualization/ WordCloud ##############################
#
from pyspark import SparkContext
from pyspark.streaming import StreamingContext
from pyspark.sql import Row, SparkSession
import datetime
from nltk.corpus import stopwords
from nltk.sentiment import vader
from nltk.corpus import words
import string
printable = set(string.printable)
stop_words = stopwords.words('english')
english_words = words.words()
analyzer = vader.SentimentIntensityAnalyzer()
def analyse(sentence):
#for sentence in sentences:
vs = analyzer.polarity_scores(sentence)
compound = float(vs['compound'])
score = ""
#max_val =max([float(vs['neg']),float(vs['pos']),float(vs['neu'])])
if compound >= 0.05:
score = "positive"
if compound > -0.05 and compound < 0.05:
score = "neutral"
if compound <= -0.05:
score = "negative"
def VaderSentimentIntensityAnalyzer(self,
text): #Vader Sentiment Analysis.
sid = vader.SentimentIntensityAnalyzer()
ss = sid.polarity_scores(text)
result = ss
return result
# Find all concepts whose polarity is different for NLTK and senticNet
#The same file is modified for both +ve and -ve by replacing pos <-> neg
import nltk.sentiment.vader as sentiment
sn = sentiment.SentimentIntensityAnalyzer() # Sentiment Analyser for NLTK
neg_corpus = []
# Stores all the pos/neg concepts in SenticNet and store in an array
with open("neg_word_corpus") as neg_corpus_file:
for line in neg_corpus_file:
word = line[:-1]
neg_corpus.append(word)
collision_file = open('colliding_polarity',
'w') # The file has been renamed to nltk_collisions_N/P
for term in neg_corpus:
nltk_polarity = sn.polarity_scores(term)
if nltk_polarity['pos'] > nltk_polarity['neg']: # have opposite polarity
print nltk_polarity
collision_file.write(term + "<-P\n") # store the result
def calculate_vader(tweet):
if type(float) == type(tweet):
return 0
sia = vader.SentimentIntensityAnalyzer()
return sia.polarity_scores(tweet)['compound']
