نتایج جستجو برای: bayesian framework

تعداد نتایج: 531748  

2006
Shipeng Yu Kai Yu Volker Tresp Hans-Peter Kriegel

We study a Bayesian framework for density modeling with mixture of exponential family distributions. Our contributions: •A variational Bayesian solution for finite mixture models • Show that finite mixture models (with a Bayesian setting) can determine the mixture number automatically • Justify this result with connections to Dirichlet Process mixture models •A fast variational Bayesian solutio...

Journal: :Analytica chimica acta 2009
Tao Chen Elaine Martin

This paper presents a Bayesian approach to the development of spectroscopic calibration models. By formulating the linear regression in a probabilistic framework, a Bayesian linear regression model is derived, and a specific optimization method, i.e. Bayesian evidence approximation, is utilized to estimate the model "hyper-parameters". The relation of the proposed approach to the calibration mo...

2011
James Henderson

This paper proposes a framework which unifies graphical model theory and formal language theory through automata theory. Specifically, we propose Bayesian Network Automata (BNAs) as a formal framework for specifying graphical models of arbitrarily large structures, or equivalently, specifying probabilistic grammars in terms of graphical models. BNAs use a formal automaton to specify how to cons...

2007
Livia Predoiu Heiner Stuckenschmidt

We present a framework for probabilistic Information Processing on the Semantic Web that is capable of representing ontologies, deductive databases, uncertain mappings between them, results of statistical instance classification and ontology learning. Our framework is built on a knowledge representation formalism called Bayesian Description Logic Programs because it is a probabilistic extension...

2007
Xiaoqin Zhang Weiming Hu Guan Luo Stephen J. Maybank

This paper proposes a general Kernel-Bayesian framework for object tracking. In this framework, the kernel based method—mean shift algorithm is embedded into the Bayesian framework seamlessly to provide a heuristic prior information to the state transition model, aiming at effectively alleviating the heavy computational load and avoiding sample degeneracy suffered by the conventional Bayesian t...

2006
G. Bayraksan W. Lin Yun Peng Zhongli Ding Rong Pan Yang Yu Boonserm Kulvatunyou Nenad Ivezic Albert Jones Hyunbo Cho

We propose a probabilistic framework to address uncertainty in ontology-based semantic integration and interoperation. This framework consists of three main components: 1) BayesOWL that translates an OWL ontology to a Bayesian network, 2) SLBN (Semantically Linked Bayesian Networks) that support reasoning across translated BNs, and 3) a Learner that learns from the web the probabilities needed ...

2017
Kaizhi Qian Yang Zhang Shiyu Chang Xuesong Yang Dinei A. F. Florêncio Mark Hasegawa-Johnson

In recent years, deep learning has achieved great success in speech enhancement. However, there are two major limitations regarding existing works. First, the Bayesian framework is not adopted in many such deep-learning-based algorithms. In particular, the prior distribution for speech in the Bayesian framework has been shown useful by regularizing the output to be in the speech space, and thus...

2001
Matthias W. Seeger

We propose the framework of mutual information kernels for learning covariance kernels, as used in Support Vector machines and Gaussian process classifiers, from unlabeled task data using Bayesian techniques. We describe an implementation of this framework which uses variational Bayesian mixtures of factor analyzers in order to attack classification problems in high-dimensional spaces where lab...

2008
Dale J. Poirier

This paper provides Bayesian rationalizations for White’s heteroskedastic consistent (HC) covariance estimator and various modifications of it. An informed Bayesian bootstrap provides the statistical framework.

Journal: :Cybernetics and Human Knowing 2007
Julio Michael Stern

In this paper epistemological, ontological and sociological questions concerning the statistical significance of sharp hypotheses in scientific research are investigated within the framework provided by Cognitive Constructivism and the FBST (Full Bayesian Significance Test). The constructivist framework is contrasted with the traditional epistemological settings for orthodox Bayesian and freque...

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