منابع مشابه
Memory-Limited U-Shaped Learning
U-shaped learning is a learning behaviour in which the learner first learns something, then unlearns it and finally relearns it. Such a behaviour, observed by psychologists, for example, in the learning of past-tenses of English verbs, has been widely discussed among psychologists and cognitive scientists as a fundamental example of the non-monotonicity of learning. Previous theory literature h...
متن کاملVariations on U-Shaped Learning
The paper deals with the following problem: is returning to wrong conjectures necessary to achieve full power of algorithmic learning? Returning to wrong conjectures complements the paradigm of U-shaped learning [3,7,9,24,29] when a learner returns to old correct conjectures. We explore our problem for classical models of learning in the limit from positive data: explanatory learning (when a le...
متن کاملLecture 4: U-Statistics & U-Process Minimizers
Hoeffding (1948a) developed the basic theory of U-Statistics, a family of estimates which includes many familiar and interesting examples. This lecture reviews this theory. Standard references for the material presented here include Serfling (1980, Chapter 5), Lehmman (1999, Chapter 6) and van der Vaart (1998, Chapters 11 & 12). The basic theory of U-Statistics allows for a presentation of larg...
متن کاملBalancing of parallel U-shaped assembly lines
A new hybrid assembly line design, called Parallel U-shaped Assembly Line system, is introduced and characterised along with numerical examples for the first time. Different from existing studies on U-shaped lines, we combine the advantages of two individual line configurations (namely parallel lines and U-shaped lines) and create an opportunity for assigning tasks to multi-line workstations lo...
متن کاملU-Shaped Learning in Phonological Development
(1999). "Regressions" ("u"-shaped learning) in the acquisition of prosodic structure. This paper addresses learning of constraint rankings by children. We argue that constraint demotion cannot account for all developmental patterns observed in child phonology. Learning algorithms that allow for constraint promotion fare better, but some still cannot account for all developmental changes. Child ...
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ژورنال
عنوان ژورنال: JACC: Cardiovascular Imaging
سال: 2013
ISSN: 1936-878X
DOI: 10.1016/j.jcmg.2012.12.014