NLP is a group of operations consisting in processing mainly textual data through various activities. With the help of these computer activities, it is possible to transform unstructured information into explicit data or to generate text from the information. In this article, I give you a list of these different tasks. — Introduction We are not born with the ability to hold a conversation, we acquire it from our family, our teachers, our colleagues… We learn at school, and throughout our lives, the vocabulary and grammar that govern writing and speaking. Natural language is opposed to computer language because of its lack of…