[R] Estimation of the mode

[Bert Gunter]

You realize, I trust, that "the mode" of a continuous distribution has
no meaning without prior specification of the distribution, which, for
a fitted density estimate would mean specification of the fitting
parameters (bandwidth, etc.) at a minimum.

So perhaps you need to rethink what you are trying to do and/or
perhaps get some advice from a local statistical resource.

-- Bert

On Fri, Jan 20, 2012 at 8:27 AM, Javier xyz <chikwiboy at hotmail.com> wrote:
>
> Hi all,
>
> I am trying to estimate the mode of a 4-dimensional nonparametric density estimator (any) using a sample of size n=10,000.  I have tried using the package 'ks' and 'np' but they are extremely slow;  this is related to the estimation of the bandwidth matrix.  I also checked the package 'modeest' but it contains only methods for univariate distributions.   I am only interested in the mode.   Any suggestion?
>
> Thanks in advance.
>
> Kind regards.
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.



-- 

Bert Gunter
Genentech Nonclinical Biostatistics

Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm