نتایج جستجو برای: extension classes
تعداد نتایج: 302141 فیلتر نتایج به سال:
ODMG 3.0 (January 2000) does not specify how to define external schemas in object oriented databases and only offers a very basic mechanism for defining views, called named queries. In this paper, a system and a language for defining external schemas in ODMG databases are presented. Both are based on a mechanism that avoids the generation of classes that are not necessary in external schemas. T...
This paper introduces modiication of two existing rule-inducing ML algorithms; they are now capable of processing continuous classes. The rst one is the CN4 algorithm, a large extension of the well-known CN2. It invokes its discretization procedure and also deals with continuous classes within the inductive process itself, i.e., 'on-line'. The other ML system, KEX (Knowledge EXplorer), treats n...
In multiclass semi-supervised learning (SSL), it is sometimes the case that the number of classes present in the data is not known, and hence no labeled examples are provided for some classes. In this paper we present variants of well-known semi-supervised multiclass learning methods that are robust when the data contains an unknown number of classes. In particular, we present an “exploratory” ...
A unified approach is taken for deriving new generalization data dependent bounds for several classes of algorithms explored in the existing literature by different approaches. This unified approach is based on an extension of Vapnik’s inequality for VC classes of sets to random classes of sets that is, classes depending on the random data, invariant under permutation of the data and possessing...
this study aimed to identify an investigation on barriers warm water fish culture from point of view of aqua culturist in golestan province. study was a descriptive survey. ¬¬t¬he statistical population of the study consisted of all 147 aqua culturist and all of them were selected using census method. information was gathered through a questionnaire which its face validity was confirmed by expe...
Gelenbe has modeled the neural network using an analogy with the queuing theory. Recently, Fourneau and Gelenbe have proposed an extension of this model, called multiple classes random neural network (RNN) model. The purpose of this paper is to describe the use of the multiple classes RNN model to recognize patterns having di/erent colors. We propose a learning algorithm for the recognition of ...
The technique of surrogate data has been used as a method to test for membership of particular classes of linear systems. We suggest an obvious extension of this to classes of nonlinear parametric models and demonstrate our methods with respiratory data from sleeping human infants. Although our data are clearly distinct from the different classes of linear systems we are unable to distinguish b...
The simple permutations in two permutation classes — the 321-avoiding permutations and the skew-merged permutations — are enumerated using a uniform method. In both cases, these enumerations were known implicitly, by working backwards from the enumeration of the class, but the simple permutations had not been enumerated explicitly. In particular, the enumeration of the simple skew-merged permut...
The simple permutations in two permutation classes — the 321-avoiding permutations and the skew-merged permutations — are enumerated using a uniform method. In both cases, these enumerations were known implicitly, by working backwards from the enumeration of the class, but the simple permutations had not been enumerated explicitly. In particular, the enumeration of the simple skew-merged permut...
Learning algorithms from the fields of artificial neural networks and machine learning, typically, do not take any costs into account or allow only costs depending on the classes of the examples that are used for learning. As an extension of class dependent costs, we consider costs that are example, i.e. feature and class dependent. We derive a costsensitive perceptron learning rule for nonsepa...
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