CL
Acronym for "Computational Linguistics". CL is a discipline between
linguistics and computer science which is concerned with the
computational aspects of the human language faculty.
MT
Acronym for "Machine Translation". MT is a form of translation where a
computer program analyses the text in one language - the "source text" -
and then produces another, equivalent text in another language - the
"target text" -without human intervention.
NLA
Acronym for "Natural Language Analysis". NLA is the NLP subtask of
analyzing natural language given in its original form mainly by parsing
it.
NLG
Acronym for "Natural Language Generation". NLG is the NLP subtask of
generating natural language from a machine representation system such as
a knowledge base or a logical form.
NLP
Acronym for "Natural Language Processing". NLP is a subfield of
artificial intelligence and linguistics. It studies the problems inherent
in the processing and manipulation of natural language.