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• W2263416072 abstract "We present tree- and list- structured density estimation methods for high dimensional binary/categorical data. Our density estimation models are high dimensional analogies to variable bin width histograms. In each leaf of the tree (or list), the density is constant, similar to the flat density within the bin of a histogram. Histograms, however, cannot easily be visualized in higher dimensions, whereas our models can. The accuracy of histograms fades as dimensions increase, whereas our models have priors that help with generalization. Our models are sparse, unlike high-dimensional histograms. We present three generative models, where the first one allows the user to specify the number of desired leaves in the tree within a Bayesian prior. The second model allows the user to specify the desired number of branches within the prior. The third model returns lists (rather than trees) and allows the user to specify the desired number of rules and the length of rules within the prior. Our results indicate that the new approaches yield a better balance between sparsity and accuracy of density estimates than other methods for this task." @default.
• W2263416072 created "2016-06-24" @default.
• W2263416072 creator A5040468715 @default.
• W2263416072 creator A5044933432 @default.
• W2263416072 date "2015-10-22" @default.
• W2263416072 modified "2023-09-27" @default.
• W2263416072 title "Cascaded High Dimensional Histograms: A Generative Approach to Density Estimation" @default.
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