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ConceptNet 5.2

ConceptNet 5.2 is now available for download and accessible over the Web.

Most of the 5.1 documentation still applies. Here are the major changes:

• The set of knowledge sources has changed. JMdict is in. ReVerb is out, because we couldn't filter it well enough.
• Some bugs in building from existing sources were fixed.
• ConceptNet can now be built from its raw data using a Makefile. (See Building from the Makefile)
• The code comes with everything you need to build and query "assoc spaces" -- vector spaces representing semantic connections between concepts -- thanks to the open-source release of assoc_space by Luminoso.
• The API now returns one result per assertion, even if that assertion comes from multiple sources.
• Because of that, the representation of knowledge sources has changed. The sources used to be lists of reasons that an assertion got added, and each one implicitly represented a conjunction. The "sources" field in the API now always contains one element for each assertion, and that element contains the full AND-OR tree of sources.

ConceptNet 5.1 documentation (may need to be updated)

Version 5.1 has a new, simpler representation of nodes and edges than ConceptNet 4.0 or 5.0, making it suitable to represent ConceptNet 5 with downloadable flat files and efficient search indexes.

The current version, 5.1.1, is an incremental update that maintains full API compatibility with 5.1.

• Graph structure
• Fields of information represented on each edge
• URI hierarchy - how we know what /c/en/coffee means
• Relations - Each assertion has a relation. These are the kinds of relations we're using so far, and what they mean.
• Web API
• Downloading
• Running your own copy using Solr and Python

Documentation on the corpus

• Copying and sharing ConceptNet
• Knowledge sources
• Changelog
• Known bugs

Development

• TODO
• Learning machinery we need