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Thesaurus Rex

Concept taxonomies offer a powerful means for organizing knowledge, but this organization must allow for many overlapping and fine-grained perspectives if a general-purpose taxonomy is to reflect concepts as they are actually employed and reasoned about in everyday usage. Think about a term like "tofu" or "robot" -- besides the basic meanings of Food or Robot, these terms evoke different perspectives and categorizations in different contexts and for different people.  For robust natural language understanding (NLU), we require our lexicons/ontologies to appreciate and exploit all of these perspectives.  Thesaurus Rex acquires finely-discriminating taxonomies from the a variety of different starting points, or seeds, via a process of bootstrapping  from three different sources: WordNet, ConceptNet and the web at large.