Python으로 배우는 Sentiment Analysis
Violeta Misheva
Data Scientist
불용어: 너무 자주 나타나 정보성이 낮은 단어
대부분 언어에 불용어 목록이 있습니다
{'the', 'a', 'an', 'and', 'but', 'for', 'on', 'in', 'at' ...}
맥락이 중요합니다
{'movie', 'movies', 'film', 'films', 'cinema'}


# Import libraries
from wordcloud import WordCloud, STOPWORDS
import matplotlib.pyplot as plt
# Define the stopwords list
my_stopwords = set(STOPWORDS)
my_stopwords.update(["movie", "movies", "film", "films", "watch", "br"])
# Generate and show the word cloud
my_cloud = WordCloud(background_color='white', stopwords=my_stopwords).generate(name_string)
plt.imshow(my_cloud, interpolation='bilinear')
from sklearn.feature_extraction.text import CountVectorizer, ENGLISH_STOP_WORDS
# Define the set of stop words
my_stop_words = ENGLISH_STOP_WORDS.union(['film', 'movie', 'cinema', 'theatre'])
vect = CountVectorizer(stop_words=my_stop_words)
vect.fit(movies.review)
X = vect.transform(movies.review)
Python으로 배우는 Sentiment Analysis