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|Title:||Learning in Friedberg numberings||Authors:||Jain, S.
|Issue Date:||2008||Citation:||Jain, S., Stephan, F. (2008). Learning in Friedberg numberings. Information and Computation 206 (6) : 776-790. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ic.2008.03.001||Abstract:||In this paper we consider learnability in some special numberings, such as Friedberg numberings, which contain all the recursively enumerable languages, but have simpler grammar equivalence problem compared to acceptable numberings. We show that every explanatorily learnable class can be learnt in some Friedberg numbering. However, such a result does not hold for behaviourally correct learning or finite learning. One can also show that some Friedberg numberings are so restrictive that all classes which can be explanatorily learnt in such Friedberg numberings have only finitely many infinite languages. We also study similar questions for several properties of learners such as consistency, conservativeness, prudence, iterativeness and non-U-shaped learning. Besides Friedberg numberings, we also consider the above problems for programming systems with K-recursive grammar equivalence problem. © 2008 Elsevier Inc. All rights reserved.||Source Title:||Information and Computation||URI:||http://scholarbank.nus.edu.sg/handle/10635/43103||ISSN:||08905401||DOI:||10.1016/j.ic.2008.03.001|
|Appears in Collections:||Staff Publications|
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