Learnability and the Vapnik-Chervonenkis dimension
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"Learnability and the Vapnik-Chervon..." refers background or methods in this paper
...These notions of polynomial learnability, both closely related to the model introduced in [59] and elaborated in [ 36 ] and [52], are discussed in Sections 3.1 and 3.2, respectively....
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...The above example shows that it is not only useful to parameterize learning algorithms and learnability results by the dimension of the domain, but also by some natural measure of the syntactic complexity of the target concept, in this case the number of intervals used to define it. Both of these considerations are emphasized in [ 36 ] and [52] in the investigation into the learnability of Boolean functions....
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...Usually the class of target concepts and hypothesis space are the same and the same representation is used, but this is not always so (see, e.g., [ 36 ])....
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...The functional and oracle models of polynomial learnability are shown to be equivalent in [30], along with another variant of the oracle model in which there are two probability distributions on the domain X, and two oracles, one for positive examples of the target concept and one for negative examples (e.g., [ 36 ] and [52])....
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...It is also possible to allow the computation time to depend explicitly on the accuracy and confidence parameters t and 6. Since this, and other extensions of the above model, are allowed in the definition of polynomial learnability in [52] and [59], we now introduce a second model of polynomial learnability, which we call the oracle model (see also [3] and [ 36 ])....
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"Learnability and the Vapnik-Chervon..." refers background in this paper
...hard to learn” classes include the class of all concepts represented by Boolean formulas of size bounded by a fixed polynomial in y1 [ 35 ]....
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