Tokenization


In this section you will get the brief understanding of tokenization.

http://blog.kaggle.com/2017/08/25/data-science-101-getting-started-in-nlp-tokenization-tutorial/



Vector space model


Vector space model is a statistical model for representing text information for Information Retrieval, NLP, Text Mining

In this section you will get the detail understanding of vector space model

http://mlwiki.org/index.php/Vector_Space_Models


Stemming/ Lemmatization


In this section you will get to know regarding stemming and lemmatization theory part as well as intuition in python

https://www.guru99.com/stemming-lemmatization-python-nltk.html

https://nlp.stanford.edu/IR-book/html/htmledition/stemming-and-lemmatization-1.html


TF-IDF


In this section you will get the brief understanding of tf-idf theory part as well as intuition in python

https://www.onely.com/blog/what-is-tf-idf/

https://www.kdnuggets.com/2018/08/wtf-tf-idf.html


Naive Bayes Classifier


In this section you will get to know regarding naive bayes classifier theoretically. 

https://towardsdatascience.com/naive-bayes-classifier-81d512f50a7c