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- W1978566368 abstract "Abstract In this article we examine the current status of exploratory projection pursuit. This involves a large comparison of all two-dimensional projection indexes and optimization algorithms that have been proposed in the literature. We show that the efficacy of the exploration depends to a large extent on the optimization routine. We also stress the importance of studying the behavior of the empirical projection indexes rather than the underlying theoretical distances they estimate. Indeed, indexes based on orthonormal polynomial expansions differ greatly in their behavior from the theoretical performance of the weighted L 2-distances they estimate. This study reveals three universal indexes, namely the Legendre index (Friedman), the Hermite index (Hall), and the chi-squared index (Posse), which are sensitive to any kind of departure from normality in the core of the distribution, and two indexes ideal for catching clusters, namely the Laguerre-Fourier index (Morton) and the Natural Hermite index (Cook, Buja, and Cabrera)." @default.
- W1978566368 created "2016-06-24" @default.
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- W1978566368 date "1995-06-01" @default.
- W1978566368 modified "2023-10-17" @default.
- W1978566368 title "Tools for Two-Dimensional Exploratory Projection Pursuit" @default.
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- W1978566368 doi "https://doi.org/10.1080/10618600.1995.10474668" @default.
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