期刊名称:Electronic Colloquium on Computational Complexity
印刷版ISSN:1433-8092
出版年度:1997
卷号:1997
出版社:Universität Trier, Lehrstuhl für Theoretische Computer-Forschung
摘要:In a variety of PAC learning models, a tradeoff between time and
information seems to exist: with unlimited time, a small amount of
information suffices, but with time restrictions, more information
sometimes seems to be required.
In addition, it has long been known that there are
concept classes that can be learned in the absence of computational
restrictions, but (under standard cryptographic assumptions) cannot be
learned in polynomial time regardless of sample size. Yet,
these results do not answer the question of whether there are classes
for which learning from a small set of examples is infeasible, but
becomes feasible when the learner has access to (polynomially) more
examples.
关键词:Computational Learning Theory, Error Correcting Codes, Information vs. Efficient Computation, Pseudo-Random Functions, The Wire-Tap Channel Problem