Natural language processing (NLP) is a collective term referring to automatic computational processing of human languages. is includes both algorithms that take human-produced text as input, and algorithms that produce natural looking text as outputs. e need for such algorithms is ever increasing: human produce ever increasing amounts of text each year, and expect computer interfaces to communicate with them in their own language. Natural language processing is also very challenging, as human language is inherently ambiguous, ever changing, and not well defined. ever changing, and not well defined.