Global ETD Search
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Showing 1 to 7 of 7 for “"Fisher model"”.
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Asymptotic Analysis of Some Stochastic Models from Population Dynamics and Population Genetics
Near the beginning of the last century, R. A. Fisher and Sewall Wright devised an elegant, mathematically tractable model of gene reproduction and replacement that laid the foundation for contemporary population genetics. The Wright-Fisher model and its extensions have given biologists powerful …
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Single-crossover recombination and ancestral recombination trees
Modeling the process of recombination in the deterministic limit of an infinite population leads to a large coupled nonlinear dynamical system that is notoriously difficult to treat and solve . In this thesis, a particular case of recombination in discrete time, allowing only for single-crossovers, …
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Some effects of subdivision of finite populations on genetic diversity measures
… in terms of the infinite-alleles Wright-Fisher model.;Moments of the multidimensional frequency spectrum of order n correspond to probabilities of identity for n genes drawn from specified subpopulations. Recursions are developed for moments of arbitrary order.;Several authors have …
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Novel color and local image descriptors for content-based image search
… are used. In one, the PCA and the Enhanced Fisher Model (EFM) are applied for feature extraction and the nearest neighbor classification rule for classification. In the other, a Support Vector Machine (SVM) is used for classification. The classification performance is tested on several …
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Investigation on advanced image search techniques
… EFM-KNN classifier, which combines the Enhanced Fisher Model (EFM) and the K Nearest Neighbor (KNN) decision rule. Experimental results on four large scale, grand challenge datasets have shown that the proposed oRGB-SIFT descriptor improves recognition performance upon other color SIFT …
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Investigation of new feature descriptors for image search and classification
… of images and the popular bag of words model to effectively classify scene images. To assess the feasibility of the proposed new image descriptors, two classification methods are used: one method applies the PCA and the Enhanced Fisher Model (EFM) for feature extraction and the nearest …