Theoretical Computer Science
Efficient learning algorithms yield circuit lower bounds
Journal of Computer and System Sciences
Lower bounds for reducibility to the Kolmogorov random strings
CiE'10 Proceedings of the Programs, proofs, process and 6th international conference on Computability in Europe
Exact learning algorithms, betting games, and circuit lower bounds
ICALP'11 Proceedings of the 38th international colloquim conference on Automata, languages and programming - Volume Part I
Dimension, halfspaces, and the density of hard sets
COCOON'07 Proceedings of the 13th annual international conference on Computing and Combinatorics
Exact Learning Algorithms, Betting Games, and Circuit Lower Bounds
ACM Transactions on Computation Theory (TOCT)
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We establish a relationship between the online mistake-bound model of learning and resource-bounded dimension. This connection is combined with the Winnow algorithm to obtain new results about the density of hard sets under adaptive reductions. This improves previous work of Fu [SIAM J. Comput., 24 (1995), pp. 1082-1090] and Lutz and Zhao [SIAM J. Comput., 30 (2000), pp. 1197-1210], and solves one of Lutz and Mayordomo’s “twelve problems in resource-bounded measure” [Bull. Eur. Assoc. Theor. Comput. Sci. EATSC, 68 (1999), pp. 64-80].