Keyword extraction using python Scikit-learn....
Stackoverflow dataset is used for this working example.. https://raw.githubusercontent.com/kavgan/nlp-text-mining-working-examples/master/tf-idf/data/stackoverflow-data-idf.json https://raw.githubusercontent.com/kavgan/nlp-text-mining-working-examples/master/tf-idf/data/stackoverflow-test.json
for Stopword removal NLTK's stopwords are used. This includes cleaning the dataset and creation of vector for Model to predict the topics which are discussed in the stackoverflow dataset.