[AniMov] small request
clement.calenge at oncfs.gouv.fr
Thu May 6 15:25:19 CEST 2010
This is a well-known problem of the LSCV algorithm. As the help page of
Note that the cross-validation criterion cannot be minimized in some
cases. According to Seaman and Powell (1998) _"This is a difficult
problem that has not been worked out by statistical theoreticians, so no
definitive response is available at this time"_ (see Seaman and Powell,
1998 for further details and tricky solutions).
See also http://www.faunalia.com/pipermail/animov/2006-May/000165.html
as well as the links therein for a complete discussion on non convergence.
Hope this helps,
On 05/06/2010 03:18 PM, Matěj Lövy wrote:
> Dear colleagues,
> I try to understand something about calculation of HR in r-project
> using ADEHABITAT package. I have read about and tried ot analyse our
> data with LSCV method for smoothing parameter. but I received this
> Warning message:
> In kernelUD(xy, id, h = "LSCV") : The algorithm did not converge
> within the specified range of hlim: try to increase it
> when I tried this: mydata<- kernelUD(xy, id, h = "LSCV").
> could zou help me how to fix and understand this problem?
> All the best and many thanks in advance
> with kind regards
> Matej Lovy
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