Kernel Regression by Mode Calculation of the Conditional Probability Distribution

Details Kernel Regression by Mode Calculation of the Conditional Probability Distribution Kernel Regression by Mode Calculation of the Conditional Probability Distribution

2008-11-21

arxiv.org/abs/0811.3499v1

Statistics

Machine Learning

11 pages, 5 figures

Scientific paper

The most direct way to express arbitrary dependencies in datasets is to estimate the joint distribution and to apply afterwards the argmax-function to obtain the mode of the corresponding conditional distribution. This method is in practice difficult, because it requires a global optimization of a complicated function, the joint distribution by fixed input variables. This article proposes a method for finding global maxima if the joint distribution is modeled by a kernel density estimation. Some experiments show advantages and shortcomings of the resulting regression method in comparison to the standard Nadaraya-Watson regression technique, which approximates the optimum by the expectation value.

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