[spinlock]

I wonder if it's actually machine learning or if they just implemented a query language that tries to guess what you mean.

The definition of machine learning that I use is: an algorithm which improves its performance through experience.

So, if charts doesn't get better the more you use it, it's not machine learning.

[lightbyte]

If I had to guess I'd say the machine learning part is analyzing a sentence ("Show me a line graph for x, y, and z") and determining what exactly they want to see.