Microsoft.Recognizers.Text provides recognition and resolution of numbers, units, and date/time expressed in multiple languages (CN, EN, FR, ES, and PT. Partial support for DE, JA, KO, NL). Contributions are greatly welcome! Packages are available at and
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ParadoxARG and tellarin [DateTime] Fix DateTimePeriodExtractor test (#1353)
* Fix "Hoy estaré fuera de cinco a siete" test results

* Fix .Net "Input": "Hoy estaré fuera de cinco a siete" test
Latest commit 0d94651 Jan 21, 2019

Microsoft Recognizers Text Overview

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Microsoft.Recognizers.Text provides robust recognition and resolution of entities like numbers, units, and date/time; expressed in multiple languages. Full support for Chinese, English, French, Spanish, and Portuguese. Partial support for German, Japanese, Korean, and Dutch. More on the way.

Utilizing the Project

Microsoft.Recognizers.Text powers pre-built entities in both LUIS: Language Understanding Intelligent Service and Microsoft Bot Framework; and is also available as standalone packages (for the base classes and the different entity recognizers).

The Microsoft.Recognizers.Text packages currently target four platforms:

Contributions are greatly welcome! Both for fixes and extensions in the currently supported languages and for expansion to new ones. Especially for Japanese, Italian, Korean, and Dutch. More info below.


This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact with any additional questions or comments.

Good starting points for contribution are:

  • the list of open issues (especially those marked as help wanted);
  • the json spec cases temporarily marked as NotSupported (Specs); and
  • translating json test spec cases that work in English, but don't yet exist in a target language.

The links below describe the project structure and provide both an overview and tips on how to contribute. Thank you!

Supported Entities across Cultures

The table below summarizes the currently supported entities. Support for English is usually more complete than others. The primary platform is .NET (shown in table) and support should propagate to the others.

Number (cardinal) SO
Ordinal SO SO
Percentage SO SO
Unit - Age SO SO
Unit - Currency SO
Unit - Dimensions SO
Unit - Temperature SO
Choice - Boolean SO
Seq. - E-mail G G* G G G G G G G G
Seq. - GUID G G G G G G G G G G
Seq. - Social G G G G G G G G G G
Seq. - IP Address G G G G G G G G G G
Seq. - Phone Number G G G G G G G G G G
Seq. - URL G G* G G G G G G G G
DateTime (+subtypes) SP partial (bugs) ⚠️ SO SI min SI min
  • G: Generic entity, not language-specific (* unicode TLDs not-supported);
  • SO: Specs-only;
  • SP: Partial specs;
  • SI: Very initial specs.