About this site

datamodels.jp is a catalog of NGSI-LD data models that work in practice in Japan. It is published as a product-neutral digital commons.

Operator

The site is run by Geolonia Inc. (株式会社Geolonia).

Questions, proposals and bug reports about the models: GitHub issues, in Japanese or English
Anything else: Geolonia's contact form (Japanese)

Models (JSON Schemas, JSON-LD @context files, vocabularies, examples, attribute descriptions, notes): CC BY 4.0. When you use them, give credit, for example "Source: datamodels.jp (Geolonia Inc.), CC BY 4.0", with a link to this site. Parts based on other standards (GIF, the municipal standard open dataset, Smart Data Models and others) name their source in the model's mappings and notes; when you use those parts, credit that source too, and say so if you changed them.
Tooling (site, scripts, adapters): Apache-2.0
IRIs from other vocabularies (Smart Data Models, schema.org, NGSI-LD and others) are only referenced here and belong to their publishers. Where a model derives from upstream material, its notes name the source.

The models are provided as they are, without any warranty of accuracy, completeness or fitness for a particular purpose.
Mappings to government and municipal standards are this catalog's reading of them; they are not endorsed by the agencies that publish those standards.
This is a pre-release. Until the official launch, published versions may still be corrected in place. After the launch, the promise in URLs that never change applies.

No cookies, no analytics, no third-party scripts, and no forms.
The site search runs in your browser and sends nothing. The appearance setting (light or dark) is stored in your browser only.
The hosting provider (Cloudflare) processes ordinary access logs (IP address, browser type and similar) as far as needed to deliver the site.
See also Geolonia's privacy policy (Japanese).

If analytics or similar tools are ever added, this page will say so first.