منابع مشابه
THEORETICAL ADVANCES Directional naive Bayes classifiers
Directional data are ubiquitous in science. These data have some special properties that rule out the use of classical statistics. Therefore, different distributions and statistics, such as the univariate von Mises and the multivariate von Mises–Fisher distributions, should be used to deal with this kind of information. We extend the naive Bayes classifier to the case where the conditional prob...
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Class binarizations are effective methods for improving weak learners by decomposing multi-class problems into several two-class problems. This paper analyzes how these methods can be applied to a Naive Bayes learner. The key result is that the pairwise variant of Naive Bayes is equivalent to a regular Naive Bayes. This result holds for several aggregation techniques for combining the predictio...
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We propose two general heuristics to transform a batch Hill-climbing search into an incremental one. Our heuristics, when new data are available, study the search path to determine whether it is worth revising the current structure and if it is, they state which part of the structure must be revised. Then, we apply our heuristics to two Bayesian network structure learning algorithms in order to...
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In this paper we discuss how machine learning, and specifically how naive Bayes classifiers, can be used for user modeling tasks. We argue that in general, machine learning techniques should be used to improve a user modeling system’s interactions with users. We further argue that a naive Bayes classifier is a reasonable approach to many user modeling problems, given its advantages of quick lea...
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There is almost always a cost associated with acquiring training data. We consider the sit uation where the learner, with a fixed budget, may 'purchase' data during training. In par ticular, we examine the case where observ ing the value of a feature of a training exam ple has an associated cost, and the total cost of all feature values acquired during train ing must remain less than this ...
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ژورنال
عنوان ژورنال: Pattern Analysis and Applications
سال: 2013
ISSN: 1433-7541,1433-755X
DOI: 10.1007/s10044-013-0340-z