Resources and Literals

What are resources and literals

The nodes of the Open Research Knowledge Graph can be either resources or literals. Resources are used to represent entities or concepts, while literals represent simple values such as strings, numbers, or dates. How to add resources or literals to a contribution is described here. In this article, we mostly explain how to navigate and create resources and some theoretical knowledge about resources and classes in the ORKG.

Navigating resources

You can find a list of all resources under View > Resources from the ORKG main page.

If you click on one of those resources, you will find yourself on the page of the resource:

resource view

Here, you can see the metadata of the resource as well as structured information about the resource. This is structured similarly to the contribution data of papers.

The resource page also has two more tabs. The tab In papers gives you an overview of all papers this resource is a part of:

resource in papers

The tab In statements shows all triples the resource is part of:

resource in statements

Resource Creation

You have two options to create resources:

  1. If you want to create a single resource, you can go to View > Resources > Create resource. There you can then enter the lable of the resource and also optionally assign a class.

  2. You can also create resources while you are working on modelling the contribution of a paper or use the contribution editor. For details about this, please see the Paper Course.

Resources and Classes

In the ORKG, resources can be created as instances of classes. Classes represent a group of similar resources with shared properties. You can find a list of all classes under View > Classes.

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