Theories behind NLP and ML?

No.11934793 ViewReplyOriginalReport
Hey /sci I am from /g--- don't bully me pls. I have to work on machine learning, natural language processing and data science for my new company starting November. Looking around I found lot of books and resource but they are mostly python and do it and move on. Problem is I want to understand the theory behind those domains but I have no idea where to start?
What is neural network?
How can it be mathematically represented?
What is natural language?
Pls help.