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Journal of Computational & Graphical Statistics articles from March 2001
Quarterly journal providing data, analysis, and surverys regarding use of computational and graphical methods in data and statistcs analysis.
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Journal of Computational & Graphical Statistics archives from March 2001
DISCUSSION ARTICLE.(sampling algorithms for latent variables)(Statistical Data Included)
March 1, 2001... The term data augmentation refers to methods for constructing iterative optimization or sampling algorithms via the introduction of unobserved data or latent variables. For deterministic algorithms, the method was popularized in the general...
Simulating Gaussian Stationary Processes With Unbounded Spectra.(Statistical Data Included)
March 1, 2001... This article proposes a new method for simulating a Gaussian process, whose spectrum diverges at one or multiple frequencies in [0, 1/2] (not necessarily at zero). The method uses a generalization of the discrete wavelet transform, the discrete...
A Robust Approach to Categorical Data Analysis.(Statistical Data Included)
March 1, 2001... Categorical data analysis is typically performed by fitting models to the observed counts in a contingency table using maximum likelihood. An inherent problem with maximum likelihood fits is their sensitivity to outlier cells, ones whose counts...
Power Exponential Densities for the Training and Classification of Acoustic Feature Vectors in Speech Recognition.(Statistical Data Included)
March 1, 2001... We consider a parametric family of multivariate density functions formed by mixture models from univariate functions of the type exp(-[|x|.sup.[Alpha]]) for modeling acoustic feature vectors used in automatic recognition of speech. The...