Do capitalize "Machine Learning" if it's the name of a journal, or if it is otherwise part of the name of some entity (e.g. the International Conference on Machine Learning), but do not capitalize it when you refer to machine learning as a field.

Should artificial intelligence be capitalized?

The phrase 'artificial intelligence', abbreviated as AI, is a branch of study or research. It is, therefore, a common noun. Therefore you would not usually capitalise it according to English rules.

Is Python capitalized?

First, Python is a programming language with a defined syntax and specification. When referring to the language, we will capitalize the name as "Python".