Guides for OpenAIRE Services
Literature & Data interlinking
What it is
What it does
Scholexplorer populates and provides access to a graph of links between dataset and literature objects and dataset and dataset objects. Links (and objects) are provided by data sources managed by publishers, data centers, or other organizations providing services to store and manage links between data sets and publications such as CrossRef, DataCite, and OpenAIRE. Scholexplorer aggregates link metadata harvested from the data sources and out of these builds and harmonised and de-duplicated graph of scholarly objects. The graph is openly accessible (CC-0) via search REST APIs that return links in Scholix format.
How can I use it?
ScholeXplorer is reached via REST APIs as these are defined in the Scholix initiative. They are free-to-use (no sign-up needed) by any third-party service. Note that:
- The service limits each query to around 10,000 paged results (pages are by default of length 100 and can be navigated via resumption token);
- Since March 2018 a full JSON dump of the service is made available in Zenodo.org every six months;
- For unlimited access to the APIs please contact the service administrators.
The Scholix Swagger API allows clients to run REST queries over the Scholexplorer index in order to fetch links matching given criteria. In the current version, clients can search for:
- links whose source object has a given PID or PID type;
- links whose source object has been published by a given data source;
- links that were collected from a given data source.
Operation / Policies
The service is running in production 24/7 within the OpenAIRE infrastructure premises deployed at the data center facilities of the Interdisciplinary Centre for Mathematical and Computational Modelling (ICM). Scholix metadata records retuned by the service can be freely re-used by commercial and non-commercial partners under CC-BY license, hence as long as OpenAIRE ScholeXplorer is acknowledged as content provider.