Apple just launched blog on its Website called the Machine Learning Journal.
While it is a blog, Apple has spent a lot of time making sure people refer to it as a journal.
The site allows Apple's engineers to write about using machines learning as they build products.
Being a avid fan of machine learning myself, this is an interesting topic to see them setup.
I use machine learning for Book Hacker, as well as for various chat bots and assistants I've been working on.
Source: Machine Learning Journal