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COLT
2010
Springer

Strongly Non-U-Shaped Learning Results by General Techniques

11 years 7 months ago
Strongly Non-U-Shaped Learning Results by General Techniques
In learning, a semantic or behavioral U-shape occurs when a learner rst learns, then unlearns, and, nally, relearns, some target concept (on the way to success). Within the framework of Inductive Inference, previous results have shown, for example, that such Ushapes are unnecessary for explanatory learning, but are necessary for behaviorally correct and non-trivial vacillatory learning. Herein we focus more on syntactic U-shapes. This paper introduces two general techniques and applies them especially to syntactic Ushapes in learning: one technique to show when they are necessary and one to show when they are unnecessary. The technique for the former is very general and applicable to a much wider range of learning criteria. It employs so-called self-learning classes of languages which are shown to characterize completely one criterion learning more than another. We apply these techniques to show that, for set-driven and partially set-driven learning, any kind of U-shapes are unnecessa...
John Case, Timo Kötzing
Added 10 Feb 2011
Updated 10 Feb 2011
Type Journal
Year 2010
Where COLT
Authors John Case, Timo Kötzing
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