Provide and parse builtin grammar based slots

[mathquis]

With "builtin" grammar based slots (for number, date, time, duration, etc.) the extracted text for these slots will need to be parsed to actionable values.

It would be pretty awesome to get a real date when saying tomorrow at six pm for example.

The Duckling library looks perfect for the job.

The Facebook updated version uses Haskell (instead of Clojure).
https://github.com/facebook/duckling

There is an interesting python library that plugs directly Facebook's Duckling (still experimental but should easily be improved).
https://github.com/sebastianmika/pyduckling

Also C bindings:
https://github.com/turbolent/CDuckling

Snips also ported the Duckling library to Rust:
https://github.com/snipsco/rustling

[koenvervloesem]

See also Mycroft's Lingua Franca.