duckling/Duckling/Time/GA
Julien Odent ab0ad0256e Locales support
Summary:
* Locales support for the library, following `<Lang>_<Region>` with ISO 639-1 code for `<Lang>` and ISO 3166-1 alpha-2 code for `<Region>` (#33)
* `Locale` opaque type (composite of `Lang` and `Region`) with `makeLocale` smart constructor to only allow valid `(Lang, Region)` combinations
* API: `Context`'s `lang` parameter has been replaced by `locale`, with optional `Region` and backward compatibility.
*  `Rules/<Lang>.hs` exposes
  - `langRules`: cross-locale rules for `<Lang>`, from `<Dimension>/<Lang>/Rules.hs`
  - `localeRules`: locale-specific rules, from `<Dimension>/<Lang>/<Region>/Rules.hs`
  - `defaultRules`: `langRules` + specific rules from select locales to ensure backward-compatibility
* Corpus, tests & classifiers
  - 1 classifier per locale, with default classifier (`<Lang>_XX`) when no locale provided (backward-compatible)
  - Default classifiers are built on existing corpus
  - Locale classifiers are built on
  - `<Dimension>/<Lang>/Corpus.hs` exposes a common `corpus` to all locales of `<Lang>`
  - `<Dimension>/<Lang>/<Region>/Corpus.hs` exposes `allExamples`: a list of examples specific to the locale (following `<Dimension>/<Lang>/<Region>/Rules.hs`).
  - Locale classifiers use the language corpus extended with the locale examples as training set.
  - Locale examples need to use the same `Context` (i.e. reference time) as the language corpus.
  - For backward compatibility, `<Dimension>/<Lang>/Corpus.hs` can expose also `defaultCorpus`, which is `corpus` augmented with specific examples. This is controlled by `getDefaultCorpusForLang` in `Duckling.Ranking.Generate`.
  - Tests run against each classifier to make sure runtime works as expected.
* MM/DD (en_US) vs DD/MM (en_GB) example to illustrate

Reviewed By: JonCoens, blandinw

Differential Revision: D6038096

fbshipit-source-id: f29c28d
2017-10-13 08:34:21 -07:00
..
Corpus.hs Locales support 2017-10-13 08:34:21 -07:00
Rules.hs Convert back escaped characters in rules 2017-09-07 12:49:33 -07:00