Open Mind Common Sense (OMCS) is an artificial intelligence project based at the Massachusetts Institute of Technology (MIT) Media Lab whose goal is to build and utilize a large commonsense knowledge base from the contributions of many thousands of people across the Web. It has been active from 1999 to 2016.
Since its founding, it has accumulated more than a million English facts from over 15,000 contributors in addition to knowledge bases in other languages. Much of OMCS's software is built on three interconnected representations: the natural language corpus that people interact with directly, a semantic network built from this corpus called ConceptNet, and a matrix-based representation of ConceptNet called AnalogySpace that can infer new knowledge using dimensionality reduction.
In its native form, the OMCS database is simply a collection of these short sentences that convey some common knowledge. In order to use this knowledge computationally, it has to be transformed into a more structured representation.
ConceptNet
ConceptNet is a semantic network based on the information in the OMCS database. ConceptNet is expressed as a directed graph whose nodes are concepts, and whose edges are assertions of common sense about these concepts. Concepts represent sets of closely related natural language phrases, which could be noun phrases, verb phrases, adjective phrases, or clauses. It uses ConceptNet as its primary lexical resource in order to help businesses make sense of and derive insight from vast amounts of qualitative data, including surveys, product reviews and social media.
Machine learning tools
The information in ConceptNet can be used as a basis for machine learning algorithms. One representation, called AnalogySpace, uses singular value decomposition to generalize and represent patterns in the knowledge in
ConceptNet, in a way that can be used in AI applications. Its creators distribute a Python machine learning toolkit called Divisi
External links
- Open Mind Common Sense meta-repository Github
- ConceptNet
- AnalogySpace
- The Divisi inference toolkit
- Commonsense Computing Initiative's Webpage (Site doesn't exist)
- The Open Mind Initiative (Site doesn't exist)
- OMCSNetCPP - Open source C++ inference engine using the OMCSNet data
- Open Mind Common Sense in Brazil (Site broken)
- Open Heart Common Sense - Emotional common sense with art (Legacy page)
- Advanced Interaction Laboratory