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Wednesday, October 21, 2015
3:00 PM - 4:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Seminar

Chef Watson and the Mathematical Limits of Creativity

Lav R. Varshney
University of Illinois at Urbana-Champaign

Creativity is defined to be the generation of an idea or artifact judged to be novel and also to be appropriate, useful, or valuable by a knowledgeable social group, and is oft-said to be the pinnacle of intelligence. Data-driven computational systems, which produce creative artifacts in several domains, are now being demonstrated and deployed. Chef Watson is a particular of computational creativity for culinary recipes, which we describe in detail, where the basic operations are to intelligently sample from the domain, rank according to predictors of novelty and quality, and select. There are multifarious designs for computational creativity and to engineering systems theorists, this zoo of possibilities raises the natural question: are there fundamental limits to creativity? Here we develop a model of creative domains with combinatorial artifacts constructed from components and study fundamental tradeoffs between quality and novelty. Novelty is measured using the information-theoretic functional, Bayesian surprise, which is the relative entropy between the empirical distribution of an inspiration set and that set updated with the new artifact. Quality is measured using permutation-invariant functions of the components comprising the new artifact. There is a fundamental tradeoff between novelty and quality, determined by the maturity of the creative domain. As the maturity of a creative domain increases, there is a phase transition from artifacts that are both novel and high-quality, to ones where a tradeoff between the two must be made. We also discuss mathematical models of discovery, which expands the combinatorial space for creativity.

Host: Frank Alexander