[knn]

Same thoughts as mine. Seems like ML was just thrown in the title to get more hits.

[ma2rten]

It uses machine learning to parse the sentence, all modern lexical parsers are based on machine learning.

[nevir]

Aren't most of them rule based?

[jonathankoren]

Not for years. State of the art has moved on from Eric Brill's dissertation 25 years ago.