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Language is a dynamic landscape in which words are not fixed landmarks, but unstable signposts that switch directions as archaic senses are lost and new, more topical senses, are gained. Frequently, entirely new lexical signposts are added as newly minted word-forms enter the language.  One can experience the variety and inventiveness of the most creative new words in English with ZeitGeist, a creative neologism generator.


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.

CWFB Puzzle Questionnaire

The CWFB Puzzle Questionnaire investigates and evaluates the correctness of solutions to automatically-generated puzzles. These puzzles are generated using the CIA World Factbook (or CWFB), but the perceived difficulty of these puzzles will of course depend on the subject’s prior knowledge of geography. Any interested person can extend his/her horizon in the geopolitical arena by solving a variety of interesting puzzles provided here. In order to model personal puzzle difficulty, we ask you to describe your familiarity in different geographical domains (e.g., Europe, Asia) first.


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