Unbiased Cross-Validation for Bandwidth Selection

Description

Uses unbiased cross-validation to select the bandwidth of a Gaussian kernel density estimator.

Usage

ucv(x, nb = 1000, lower, upper)

Arguments

Value

a bandwidth.

References

Scott, D. W. (1992) Multivariate Density Estimation: Theory, Practice, and Visualization. Wiley.

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

See Also

bcv, width.SJ, density

Examples

ucv(geyser$duration)

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
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Type 'license()' or 'licence()' for distribution details.

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Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(MASS)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/MASS/ucv.Rd_%03d_medium.png", width=480, height=480)
> ### Name: ucv
> ### Title: Unbiased Cross-Validation for Bandwidth Selection
> ### Aliases: ucv
> ### Keywords: dplot
> 
> ### ** Examples
> 
> ucv(geyser$duration)
[1] 0.1746726
Warning message:
In ucv(geyser$duration) : minimum occurred at one end of the range
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>