The Workspace allows users to manage data sources and linking tasks defined for each project.

The Workspace Browser shows a tree view of all Projects in the current Workspace:

Projects

A project holds the following information:

1. All URI prefixes which are used in the project.
2. A list of data sources
3. A list of linking tasks

Users are able to create new projects or import existing ones. Existing projects can be deleted or exported to a single file.

Data Sources

A data source holds all information that is needed by Silk to retrieve entities from it.
Users can add new data sources and edit their properties:

The following properties can be edited:

• Endpoint URI The URI of the SPARQL endpoint
• Graph URI Only retrieve instances from a specific graph
• Retry count To recover from intermittent SPARQL endpoint connection failures, the ‘retryCount’ parameter specifies the number of times to retry connecting.
• Retry pause To recover from intermittent SPARQL endpoint connection failures, he ‘retryPause’ parameter specifies how long to wait between retries.

Linking Tasks

A linking tasks consists of the following elements:

1. Metadata
2. A link specification
3. Positive and negative reference links

Linking Tasks can be added to a existing project and removed from it. Clicking on Metadata opens a dialog to edit the meta data of a linking task:

The following properties can be edited:

• Name The unique name of the linking task
• Source The source data set
• Source restriction Restricts source dataset using SPARQL clauses
• Target The target data set
• Target restriction Restricts target dataset using SPARQL clauses
• Link type Type of the generated link e.g. owl:sameAs

Clicking on the open button opens the Link Specification Editor