ld-stars

Rate (as in five stars linked data) a schema.org document in JSON-LD.

Background

Developed by Tim Berners-Lee, the purpose of the 5-star rating system is to encourage adoption of best linked open data practices. Here are the requirements, taken from his original proposal:

★ Available on the web (whatever format) but with an open licence, to be Open Data

★★ Available as machine-readable structured data (e.g. excel instead of image scan of a table)

★★★ as (2) plus non-proprietary format (e.g. CSV instead of excel)

★★★★ All the above plus, Use open standards from W3C (RDF and SPARQL) to identify things, so that people can point at your stuff

★★★★★ All the above, plus: Link your data to other people’s data to provide context

API

import * as ldstars from 'ldstars';

ldstars.rate(doc [, opts])

Rates a schema.org CreativeWork JSON-LD document.

opts include string: true.

returns a rating object.

{
  ol: true,
  of: true,
  re: true,
  uri: true,
  ld: true
}

• ol: open license
• of: open format
• re: machine readable
• uri: uniform resource identifiers
• ld: linked data

ldstars.toString(rating)

Converts a rating object to a string:

ldstars.toString({ ol: false, of: false, re: true, uri:false, ld: true })

returns 're-ld'.