It seems like these days every healthcare IT company out there is saying they’re doing machine learning, AI, deep learning, etc. So many companies are using these terms that they’ve started to lose meaning. The problem is that people are using these labels regardless of whether they really apply. Plus, we all have different definitions for these terms.
As I search to understand the differences myself, I found this great tweet from Ronald van Loon that looks at this world and tries to better define it:
— Ronald van Loon (@Ronald_vanLoon) September 29, 2017
- AI ( ) is a subfield of computer science, that was created in the 1960s, and it was (is) concerned with solving tasks that are easy for humans, but hard for computers. In particular, a so-called Strong AI would be a system that can do anything a human can (perhaps without purely physical things). This is fairly generic, and includes all kinds of tasks, such as planning, moving around in the world, recognizing objects and sounds, speaking, translating, performing social or business transactions, creative work (making art or poetry), etc.
- NLP ( ) is simply the part of AI that has to do with language (usually written).
- is concerned with one aspect of this: given some AI problem that can be described in discrete terms (e.g. out of a particular set of actions, which one is the right one), and given a lot of information about the world, figure out what is the “correct” action, without having the programmer program it in. Typically some outside process is needed to judge whether the action was correct or not. In mathematical terms, it’s a function: you feed in some input, and you want it to to produce the right output, so the whole problem is simply to build a model of this mathematical function in some automatic way. To draw a distinction with AI, if I can write a very clever program that has human-like behavior, it can be AI, but unless its parameters are automatically learned from data, it’s not machine learning.
- is one kind of machine learning that’s very popular now. It involves a particular kind of mathematical model that can be thought of as a composition of simple blocks (function composition) of a certain type, and where some of these blocks can be adjusted to better predict the final outcome.
Is that clear for you now? Would you suggest different definitions? Where do you see people using these terms correctly and where do you see them using them incorrectly?