search for: hugomh

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2018 Oct 05
2
Bug : Autocorrelation in sample drawn from stats::rnorm (hmh)
On 05/10/2018, 09:45, "R-help on behalf of hmh" <r-help-bounces at r-project.org on behalf of hugomh at gmx.fr> wrote: Hi, Thanks William for this fast answer, and sorry for sending the 1st mail to r-help instead to r-devel. I noticed that bug while I was simulating many small random walks using c(0,cumsum(rnorm(10))). Then the negative auto-correlation was...
2018 Oct 05
0
Bug : Autocorrelation in sample drawn from stats::rnorm (hmh)
On Fri, Oct 5, 2018 at 2:07 PM hmh <hugomh at gmx.fr> wrote: > > On 05/10/2018 10:28, Annaert Jan wrote: > > you discard any time series structure; > But that is PRECISELY what a call a bug: > There should not be any "time series structure" in the output or rnorm, > runif and so on but there is one. > &g...
2018 Oct 04
2
Bug : Autocorrelation in sample drawn from stats::rnorm (hmh)
Hi Hugo, I've been able to replicate your bug, including for other distributions (runif, rexp, rgamma, etc) which shouldn't be surprising since they're probably all drawing from the same pseudo-random number generator. ?Interestingly, it does not seem to depend on the choice of seed, I am not sure why that is the case. I'll point out first of all that the R-devel mailing list is
2018 Oct 04
2
Bug : Autocorrelation in sample drawn from stats::rnorm (hmh)
Hi Hugo, I've been able to replicate your bug, including for other distributions (runif, rexp, rgamma, etc) which shouldn't be surprising since they're probably all drawing from the same pseudo-random number generator. ?Interestingly, it does not seem to depend on the choice of seed, I am not sure why that is the case. I'll point out first of all that the R-devel mailing list is
2017 Nov 18
0
Using cforest on a hierarchically structured dataset
Hi, I am facing a hierarchically structured dataset, and I am not sure of the right way to analyses it with cforest, if their is one. - - BACKGROUND & PROBLEM We are analyzing the behavior of some social birds facing different temperature conditions. The behaviors of the birds were recorder during many sessions of 2 hours. Conditional RF (cforest) are quite useful for this analysis