Syntaxnet / Parsey McParseface declarative sentences only?

Question

I cannot seem to find detail on the the data parsey was trained on; I am assuming it was mostly, if not all, on declarative sentences. If that's true, then Syntaxnet / parsey might not be the solution for imperative sentences, such as instructional text. Is this accurate? Is there anything out there that works with imperative sentence structure?

Answer 1

It is mentioned in official docs:

The included English parser, Parsey McParseface, was trained on the the standard corpora of the Penn Treebank and OntoNotes, as well as the English Web Treebank, but these are unfortunately not freely available.

Answer 2

Parsey McParseface is trained on the Penn Treebank as well as the Web Treebank. The cloud parser has additional proprietary data to help cover some of the gaps.

Parsey actually does pretty well on imperatives, though I don't have actual numbers to back that up -- but if you just try things, it mostly does well in my experience. The cloud system may do a bit better than that as well. In both cases there are imperative examples in our training data.

For example:

This was the first thing I tried. Note that "try" is often a noun, so there's some ambiguity for it to figure out, and it gets it right.