对文本进行情感分析：TextBlob
jopen
10年前
TextBlob是一个用 Python (2和3)编写的开源的文本处理库。它可以用来执行很多自然语言处理的任务，比如，词性标注，名词性成分提取，情感分析，文本翻译，等等。你可以在官方文档阅读TextBlog的所有特性。
为什么我要关心TextBlob？
我学习TextBlob的原因如下：
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我想开发需要进行文本处理的应用。我们给应用添加文本处理功能之后，应用能更好地理解人们的行为，因而显得更加人性化。文本处理很难做对。TextBlob站在巨人的肩膀上（NTLK），NLTK是创建处理自然语言的Python程序的最佳选择。
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我想学习下如何用 Python 进行文本处理。
from textblob import TextBlob text = ''' The titular threat of The Blob has always struck me as the ultimate movie monster: an insatiably hungry, amoeba-like mass able to penetrate virtually any safeguard, capable of--as a doomed doctor chillingly describes it--"assimilating flesh on contact. Snide comparisons to gelatin be damned, it's a concept with the most devastating of potential consequences, not unlike the grey goo scenario proposed by technological theorists fearful of artificial intelligence run rampant. ''' blob = TextBlob(text) blob.tags # [(u'The', u'DT'), (u'titular', u'JJ'), # (u'threat', u'NN'), (u'of', u'IN'), ...] blob.noun_phrases # WordList(['titular threat', 'blob', # 'ultimate movie monster', # 'amoeba-like mass', ...]) for sentence in blob.sentences: print(sentence.sentiment.polarity) # 0.060 # -0.341 blob.translate(to="es") # 'La amenaza titular de The Blob...'
特性
- Noun phrase extraction
- Part-of-speech tagging
- Sentiment analysis
- Classification (Naive Bayes, Decision Tree)
- Language translation and detection powered by Google Translate
- Tokenization (splitting text into words and sentences)
- Word and phrase frequencies
- Parsing
- n-grams
- Word inflection (pluralization and singularization) and lemmatization
- Spelling correction
- Add new models or languages through extensions
- WordNet integration