نتایج جستجو برای: bayesian classification

تعداد نتایج: 567193  

2003
PIETRO MULIERE PIERCESARE SECCHI

We present a random probability distribution which approximates, in the sense of weak convergence, the Dirichlet process and supports a Bayesian resampling plan called a proper Bayesian bootstrap. 2000 Mathematics Subject Classification: 62G09, 60B10.

Journal: :J. Symb. Comput. 2005
Luis David García-Puente Michael Stillman Bernd Sturmfels

We study the algebraic varieties defined by the conditional independence statements of Bayesian networks. A complete algebraic classification is given for Bayesian networks on at most five random variables. Hidden variables are related to the geometry of higher secant varieties.

2008
Paola Britos Pablo Felgaer Ramón García-Martínez

Obtaining a bayesian network from data is a learning process that is divided in two steps: structural learning and parametric learning. In this paper, we define an automatic learning method that optimizes the bayesian networks applied to classification, using a hybrid method of learning that combines the advantages of the induction techniques of the decision trees with those of the bayesian net...

Journal: :JNW 2014
Qingtao Wu Min Cui Mingchuan Zhang Ruijuan Zheng Ying Lou

There are now a vast array of heterogeneous cloud service resources, which makes it difficult to identify suitable services for the various types of cloud users. A classification of cloud service resources would help users find suitable cloud services more easily. We propose such a classification strategy, which has two parts. First, we improve the original naive Bayesian classification algorit...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2002
Qiong Jackson David A. Landgrebe

In this paper an Adaptive Bayesian Contextual classification procedure that utilizes both spectral and spatial interpixel dependency contexts in estimation of statistics and classification is proposed. Essentially, this classifier is the constructive coupling of an adaptive classification procedure and a Bayesian contextual classification procedure. In this classifier, the joint prior probabili...

Journal: :CoRR 2017
Andrea L. Bertozzi Xiyang Luo Andrew M. Stuart Konstantinos C. Zygalakis

Classification of high dimensional data finds wide-ranging applications. In many of these applications equipping the resulting classification with a measure of uncertainty may be as important as the classification itself. In this paper we introduce, develop algorithms for, and investigate the properties of, a variety of Bayesian models for the task of binary classification; via the posterior di...

2013
Norbert Dojer Pawel Bednarz Agnieszka Podsiadlo Bartek Wilczynski

SUMMARY Bayesian Networks (BNs) are versatile probabilistic models applicable to many different biological phenomena. In biological applications the structure of the network is usually unknown and needs to be inferred from experimental data. BNFinder is a fast software implementation of an exact algorithm for finding the optimal structure of the network given a number of experimental observatio...

2006
Remco R. Bouckaert

We present a new method for voting exponential (in the number of attributes) size sets of Bayesian classifiers in polynomial time with polynomial memory requirements. Training is linear in the number of instances in the dataset and can be performed incrementally. This allows the collection to learn from massive data streams. The method allows for flexibility in balancing computational complexit...

Journal: :Bioinformatics 2002
A. Raval Zoubin Ghahramani David L. Wild

MOTIVATION The Bayesian network approach is a framework which combines graphical representation and probability theory, which includes, as a special case, hidden Markov models. Hidden Markov models trained on amino acid sequence or secondary structure data alone have been shown to have potential for addressing the problem of protein fold and superfamily classification. RESULTS This paper desc...

2007
Vitaly Schetinin Jonathan E. Fieldsend Derek Partridge Wojtek J. Krzanowski Richard M. Everson Trevor C. Bailey Adolfo Hernandez

Bayesian averaging over classification models allows the uncertainty of classification outcomes to be evaluated, which is of crucial importance for making reliable decisions in applications such as financial in which risks have to be estimated. The uncertainty of classification is determined by a trade-off between the amount of data available for training, the diversity of a classifier ensemble...

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