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Strongly non-U-shaped language learning results by general techniques.
- Source :
-
Information & Computation . Dec2016, Vol. 251, p1-15. 15p. - Publication Year :
- 2016
-
Abstract
- In learning, a semantic or behavioral U-shape occurs when a learner first learns, then unlearns, and, finally, relearns, some target concept. This paper introduces two general techniques and applies them especially to syntactic U-shapes 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 rearrangement-independent learning, any kind of U-shapes is unnecessary. Furthermore, we show that U-shapes are necessary in a strong way for iterative learning, contrasting with an earlier result by Case and Moelius that semantic U-shapes are un necessary for iterative learning. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08905401
- Volume :
- 251
- Database :
- Academic Search Index
- Journal :
- Information & Computation
- Publication Type :
- Academic Journal
- Accession number :
- 119418551
- Full Text :
- https://doi.org/10.1016/j.ic.2016.06.015