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Ensemble Learning For Independent Component Analysis

by Harri Lappalainen , 1999
"... In this paper, a recently developed Bayesian method called ensemble learning is applied to independent component analysis (ICA). Ensemble learning is a computationally efficient approximation for exact Bayesian analysis. In general, the posterior probability density function (pdf) is a complex high ..."
Abstract - Cited by 50 (4 self) - Add to MetaCart
dimensional function whose exact treatment is diffucult. In ensemble learning, the posterior pdf is approximated by a more simple function and Kullback-Leibler information is used as the criterion for minimising the misfit between the actual posterior pdf and its parametric approximation. In this paper

An exact likelihood analysis of the multinomial probit model

by Robert McCulloch, Peter E. Rossi , 1994
"... We develop new methods for conducting a finite sample, likelihood-based analysis of the multinomial probit model. Using a variant of the Gibbs sampler, an algorithm is developed to draw from the exact posterior of the multinomial probit model with correlated errors. This approach avoids direct evalu ..."
Abstract - Cited by 166 (6 self) - Add to MetaCart
We develop new methods for conducting a finite sample, likelihood-based analysis of the multinomial probit model. Using a variant of the Gibbs sampler, an algorithm is developed to draw from the exact posterior of the multinomial probit model with correlated errors. This approach avoids direct

Using Bayesian model averaging to calibrate forecast ensembles

by Adrian E. Raftery, Tilmann Gneiting, Fadoua Balabdaoui, Michael Polakowski - MONTHLY WEATHER REVIEW 133 , 2005
"... Ensembles used for probabilistic weather forecasting often exhibit a spread-error correlation, but they tend to be underdispersive. This paper proposes a statistical method for postprocessing ensembles based on Bayesian model averaging (BMA), which is a standard method for combining predictive distr ..."
Abstract - Cited by 144 (34 self) - Add to MetaCart
distributions from different sources. The BMA predictive probability density function (PDF) of any quantity of interest is a weighted average of PDFs centered on the individual bias-corrected forecasts, where the weights are equal to posterior probabilities of the models generating the forecasts and reflect

Automatic Segmentation of Acoustic Musical Signals Using Hidden Markov Models

by Christopher Raphael - IEEE Transactions on Pattern Analysis and Machine Intelligence , 1998
"... this paper we address an important step towards our goal of automatic musical accompaniment --- the segmentation problem. Given a score to a piece of monophonic music and a sampled recording of a performance of that score, we attempt to segment the data into a sequence of contiguous regions correspo ..."
Abstract - Cited by 120 (11 self) - Add to MetaCart
corresponding to the notes and rests in the score. Within the framework of a hidden Markov model, we model our prior knowledge, perform unsupervised learning of the the data model parameters, and compute the segmentation that globally minimizes the posterior expected number of segmentation errors. We also show

Learning to Identify and Actualize Affordances in a New Tool Abstract | Article PDF

by Nike Arnold, Lara Ducate, Iryna Kozlova, Abstract Article Pdf, Chin-chi Chao, Competencies In-service, Program Perspectives, Karen Haines Unitec
"... Abstract | Article PDF ..."
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Abstract | Article PDF

A parametric manipulation of factors affecting task-induced deactivation in functional neuroimaging

by Kristen A. Mckiernan, Jacqueline N. Kaufman, Jane Kucera-thompson, Jeffrey R. Binder - Journal of Cognitive Neuroscience , 2003
"... & Task-induced deactivation (TID) refers to a regional decrease in blood flow during an active task relative to a ‘‘resting’ ’ or ‘‘passive’ ’ baseline. We tested the hypothesis that TID results from a reallocation of processing resources by parametrically manipulating task difficulty within thr ..."
Abstract - Cited by 102 (5 self) - Add to MetaCart
/superior frontal gyrus, left middle frontal gyrus, right anterior cingulate gyrus, left and right posterior cingulate gyrus, left posterior parieto-occipital cortex, and right precuneus) in which TID magnitude varied across task levels within a factor. Follow-up tests indicated that for each of the three factors

More Aspects of Polya Tree Distributions for Statistical Modelling

by Michael Lavine - Ann. Statist , 1994
"... : The definition and elementary properties of Polya tree distributions are reviewed. Two theorems are presented showing that Polya trees can be constructed to concentrate arbitrarily closely about any desired pdf, and that Polya tree priors can put positive mass in every relative entropy neighborhoo ..."
Abstract - Cited by 93 (1 self) - Add to MetaCart
: The definition and elementary properties of Polya tree distributions are reviewed. Two theorems are presented showing that Polya trees can be constructed to concentrate arbitrarily closely about any desired pdf, and that Polya tree priors can put positive mass in every relative entropy

Posterior sampling of scientific images

by Azadeh Mohebi, Paul Fieguth - LNCS
"... Abstract. Scientific image processing involves a variety of problems in-cluding imagemodelling, reconstruction, and synthesis.We are collaborat-ing on an imaging problem in porous media, studied in-situ in an imaging MRI in which it is imperative to infer aspects of the porous sample at scales unres ..."
Abstract - Cited by 7 (3 self) - Add to MetaCart
images are treated only as being governed by the same spatial statistics, rather than actually representing the same identical sample. 1

The Plane of Mediation: The Actual and Virtual as Cultural System (pdf version)

by Michael Filimowicz
"... This paper proposes a new synthetic model of culture as a dynamic system of negative-virtuals and positive-actuals called the plane of mediation, which can serve strategies of transdiscursive inquiry across humanist and social science disciplines. The paper starts from the notion of Auerbach’s herme ..."
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This paper proposes a new synthetic model of culture as a dynamic system of negative-virtuals and positive-actuals called the plane of mediation, which can serve strategies of transdiscursive inquiry across humanist and social science disciplines. The paper starts from the notion of Auerbach’s

Discrepancy between Actual and Theoretical Anterior Chamber Depth in Patients with Morcher Posterior Chamber Intraocular Lens

by Akbar Derakhshan, Md Mojtaba Abrishami, Parviz Maerozi, Ms Ramin Daneshvar , 2010
"... chi ve of S ID ..."
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chi ve of S ID
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