An introductory tutorial on how to do Natural Language Processing using NLTK (Natural Language Toolkit) in Python.
intro2NLP.ipynb: a Jupyter notebook which shows how to access, clean, and analyze a corpus using the nltk library.
After accessing Jane Austen's Sense and Sensibility on the nltk.corpus package, I preprocess the text by e.g. removing stopwords and punctuations, then plot the distribution of word frequency and apply sentiment analysis using the textblob library. To show how to do sentiment analysis using a classifier, I train a Naive Bayes classifier on the movie_review dataset available on nltk.corpus.