Displaying 4 results from an estimated 4 matches for "inflexions".
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inflexion
2017 Jul 06
3
calcular punto de inflexion
Buenas,
¿Cómo calculariais el punto de inflexion de esta curva marcado en rojo?
[X]
He probado de la siguiente manera:
1- Haciendo la segunda derivada:No me sirve, porque m edetecta muchas veces esos casos
2- Mirando si el siguiente valor es mayor que el anterior. No me vale, ya que si hay ruido, no lo va a detectar.
3. Mirando que el punto siguiente crezca respecto al anterior. No me
2010 Aug 06
1
Error on random forest variable importance estimates
Hello,
I am using the R randomForest package to classify variable stars. I have
a training set of 1755 stars described by (too) many variables. Some of
these variables are highly correlated.
I believe that I understand how randomForest works and how the variable
importance are evaluated (through variable permutations). Here are my
questions.
1) variable importance error? Is there any ways
2008 Aug 07
1
recursive root finding
Dear list,
I've had this problem for a while and I'm looking for a more general
and robust technique than I've been able to imagine myself. I need to
find N (typically N= 3 to 5) zeros in a function that is not a
polynomial in a specified interval.
The code below illustrates this, by creating a noisy curve with three
peaks of different position, magnitude, width and
2000 Sep 28
0
Occams Razor Was: lm -- significance of x ...
...algaard BSA <p.dalgaard at biostat.ku.dk> writes:
>
> > I think Occam/Ockham himself wrote in Latin. By my failing memory, the
> > quote is
> >
> > "Entia non runt multiplicanda praeter necessitam"
> >
> > give or take a couple of incorrect inflexions. I.e. "Entities should
> > not multiply unless necessary" -- do not invent more elaborate
> > explanations than what is necessary to explain the facts.
>
> A little web search gave the following at
> http://www2.jonction.net/~ziem/occam.html
>
> "Plurali...