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ConceptNet 5

ConceptNet is a multilingual knowledge base, representing words and phrases that people use and the common-sense relationships between them. The knowledge in ConceptNet is collected from a variety of resources, including crowd-sourced resources (such as Wiktionary and Open Mind Common Sense), games with a purpose (such as Verbosity and nadya.jp), and expert-created resources (such as WordNet and JMDict).

Knowledge base documentation

• Edges - The basic units of knowledge in ConceptNet and what they represent.
• URI hierarchy - how we know what /c/en/coffee means
• Relations - Each edge has a relation. These are the kinds of relations we're using so far, and what they mean.
• Changelog, up to and including version 5.2.1 (2014 March 19)

Using ConceptNet

• Web API - A quick way to get started with ConceptNet 5, this REST API lets you query the knowledge about any node in ConceptNet, and even make some inferences about which nodes are related.
• Downloading - You can download all the information in ConceptNet 5 in tabular text or JSON formats.
• Running your own copy - How to set up a local copy of the ConceptNet API using Solr and Python.
• Copying and sharing ConceptNet - ConceptNet is open data, and we want you to copy it and put it to new uses.

Pages that seriously need to be updated

• Graph structure
• Knowledge sources
• Known bugs