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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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% file stats/man/ppr.Rd
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% file stats/man/ppr.Rd
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% copyright (C) 1995-8 B. D. Ripley
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% copyright (C) 1995-8 B. D. Ripley
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% copyright (C) 2000-3   The R Core Team
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% copyright (C) 2000-3   The R Core Team
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\newcommand{\CRANpkg}{\href{http://CRAN.R-project.org/package=#1}{\pkg{#1}}}
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%
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\name{ppr}
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\name{ppr}
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\alias{ppr}
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\alias{ppr}
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\alias{ppr.default}
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\alias{ppr.default}
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\alias{ppr.formula}
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\alias{ppr.formula}
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\title{Projection Pursuit Regression}
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\title{Projection Pursuit Regression}
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  from each regressor at each step and so is a little less likely to
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  from each regressor at each step and so is a little less likely to
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  converge to a saddle point of the sum of squares criterion.
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  converge to a saddle point of the sum of squares criterion.
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}
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}
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\source{
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\source{
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  Friedman (1984): converted to double precision and added interface to
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  Friedman (1984): converted to double precision and added interface to
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  smoothing splines by B. D. Ripley, originally for the \pkg{MASS} package.
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  smoothing splines by B. D. Ripley, originally for the \CRANpkg{MASS}
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  package.
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}
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}
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\references{
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\references{
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  Friedman, J. H. and Stuetzle, W. (1981)
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  Friedman, J. H. and Stuetzle, W. (1981)
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  Projection pursuit regression.
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  Projection pursuit regression.