Changelog

ConceptNet 5.1 (2012 April 30)

• Made base URIs shorter. For example, /concept/en/dog becomes /c/en/dog.
• Changed the representation of assertions. Assertions are a bundle of edges (hyperedges, really) that connect two arguments and a relation. These edges are labeled with all the appropriate metadata.
• Created JSON and CSV flat-files.
• Created a Solr index and an accompanying API.

ConceptNet 5.0 (2011 October 28)

• First API for ConceptNet 5.
• All assertions were reified as nodes, with edges for arguments. This turned out to be an ineffective representation.
• See API 5.0 for details.