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American Economic Review: Vol. 95 No. 5 (December 2005)

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Fact-Free Learning

Article Citation

Aragones, Enriqueta, Itzhak Gilboa, Andrew Postlewaite, and David Schmeidler. 2005. "Fact-Free Learning." American Economic Review, 95(5): 1355-1368.

DOI: 10.1257/000282805775014308

Abstract

People may be surprised to notice certain regularities that hold in existing knowledge they have had for some time. That is, they may learn without getting new factual information. We argue that this can be partly explained by computational complexity. We show that, given a knowledge base, finding a small set of variables that obtain a certain value of R2 is computationally hard, in the sense that this term is used in computer science. We discuss some of the implications of this result and of fact-free learning in general.

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Authors

Aragones, Enriqueta
Gilboa, Itzhak
Postlewaite, Andrew
Schmeidler, David


American Economic Review


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