Language, engine, and tooling for expressing, testing, and evaluating composable language rules on input strings.
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Steven Troxler e3114c08f5 AmountOfMoney/ES: Add support for intervals
Summary:
This change applies roughly the same rules for supporting intervals
in Spanish AmountOfMoney that we suppor in English: intervals using
`entre _ e _` / `de _ a _` / `_ - _` with either money in both slots
or a number in the first slot and money in the second.

My Spanish is okay but not great - I'm confident these rules are good and
cover the most likely phrases, but there's probably room to add more coverage.

Reviewed By: patapizza

Differential Revision: D20425979

fbshipit-source-id: deb17fc331e1aa192d91dd47bc7f3864a246f0be
2020-03-13 11:21:45 -07:00
dist-newstyle/cache Add Numeral dimension for new language TH (#399) 2019-11-27 15:48:38 -08:00
Duckling AmountOfMoney/ES: Add support for intervals 2020-03-13 11:21:45 -07:00
exe AF Setup + Numeral (#422) 2020-01-10 15:02:50 -08:00
tests Adding Locales for ES Numeral 2020-02-25 16:01:45 -08:00
.gitignore Hindi Language Numeral Dimension(minimalistic model). Tests passed. 2017-12-19 13:15:30 -08:00
.travis.yml Update dependencies to latest version to make duckling compile with ghc 8.6.3 (#334) 2019-02-22 11:46:50 -08:00
CODE_OF_CONDUCT.md add FB code of conduct 2018-01-02 08:15:29 -08:00
CONTRIBUTING.md Documentation: Coding style 2018-05-14 14:30:36 -07:00
Dockerfile Update old github links 2018-04-23 10:15:33 -07:00
duckling.cabal Fix build 2020-03-05 12:50:20 -08:00
LICENSE Initial commit 2017-03-08 10:33:56 -08:00
logo.png Adding logo 2017-03-15 08:04:31 -07:00
README.md Update: add new dimension to a language 2019-07-09 15:21:34 -07:00
stack.yaml Update to lts-9.10 2017-10-26 18:34:27 -07:00

Duckling Logo

Duckling Build Status

Duckling is a Haskell library that parses text into structured data.

"the first Tuesday of October"
=> {"value":"2017-10-03T00:00:00.000-07:00","grain":"day"}

Requirements

A Haskell environment is required. We recommend using stack.

On macOS you'll need to install PCRE development headers. The easiest way to do that is with Homebrew:

brew install pcre

If that doesn't help, try running brew doctor and fix the issues it finds.

Quickstart

To compile and run the binary:

$ stack build
$ stack exec duckling-example-exe

The first time you run it, it will download all required packages.

This runs a basic HTTP server. Example request:

$ curl -XPOST http://0.0.0.0:8000/parse --data 'locale=en_GB&text=tomorrow at eight'

See exe/ExampleMain.hs for an example on how to integrate Duckling in your project. If your backend doesn't run Haskell or if you don't want to spin your own Duckling server, you can directly use wit.ai's built-in entities.

Supported dimensions

Duckling supports many languages, but most don't support all dimensions yet (we need your help!). Please look into this directory for language-specific support.

Dimension Example input Example value output
AmountOfMoney "42€" {"value":42,"type":"value","unit":"EUR"}
CreditCardNumber "4111-1111-1111-1111" {"value":"4111111111111111","issuer":"visa"}
Distance "6 miles" {"value":6,"type":"value","unit":"mile"}
Duration "3 mins" {"value":3,"minute":3,"unit":"minute","normalized":{"value":180,"unit":"second"}}
Email "duckling-team@fb.com" {"value":"duckling-team@fb.com"}
Numeral "eighty eight" {"value":88,"type":"value"}
Ordinal "33rd" {"value":33,"type":"value"}
PhoneNumber "+1 (650) 123-4567" {"value":"(+1) 6501234567"}
Quantity "3 cups of sugar" {"value":3,"type":"value","product":"sugar","unit":"cup"}
Temperature "80F" {"value":80,"type":"value","unit":"fahrenheit"}
Time "today at 9am" {"values":[{"value":"2016-12-14T09:00:00.000-08:00","grain":"hour","type":"value"}],"value":"2016-12-14T09:00:00.000-08:00","grain":"hour","type":"value"}
Url "https://api.wit.ai/message?q=hi" {"value":"https://api.wit.ai/message?q=hi","domain":"api.wit.ai"}
Volume "4 gallons" {"value":4,"type":"value","unit":"gallon"}

Custom dimensions are also supported.

Extending Duckling

To regenerate the classifiers and run the test suite:

$ stack build :duckling-regen-exe && stack exec duckling-regen-exe && stack test

It's important to regenerate the classifiers after updating the code and before running the test suite.

To extend Duckling's support for a dimension in a given language, typically 4 files need to be updated:

  • Duckling/<Dimension>/<Lang>/Rules.hs
  • Duckling/<Dimension>/<Lang>/Corpus.hs
  • Duckling/Dimensions/<Lang>.hs (if not already present in Duckling/Dimensions/Common.hs)
  • Duckling/Rules/<Lang>.hs

To add a new language:

To add a new locale:

Rules have a name, a pattern and a production. Patterns are used to perform character-level matching (regexes on input) and concept-level matching (predicates on tokens). Productions are arbitrary functions that take a list of tokens and return a new token.

The corpus (resp. negative corpus) is a list of examples that should (resp. shouldn't) parse. The reference time for the corpus is Tuesday Feb 12, 2013 at 4:30am.

Duckling.Debug provides a few debugging tools:

$ stack repl --no-load
> :l Duckling.Debug
> debug (makeLocale EN $ Just US) "in two minutes" [This Time]
in|within|after <duration> (in two minutes)
-- regex (in)
-- <integer> <unit-of-duration> (two minutes)
-- -- integer (0..19) (two)
-- -- -- regex (two)
-- -- minute (grain) (minutes)
-- -- -- regex (minutes)
[Entity {dim = "time", body = "in two minutes", value = RVal Time (TimeValue (SimpleValue (InstantValue {vValue = 2013-02-12 04:32:00 -0200, vGrain = Second})) [SimpleValue (InstantValue {vValue = 2013-02-12 04:32:00 -0200, vGrain = Second})] Nothing), start = 0, end = 14}]

License

Duckling is BSD-licensed.