Displaying 5 results from an estimated 5 matches for "infinie".
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2010 Jan 13
1
Problem fitting a non-linear regression model with nls
...\n le pas 0.000488281 est devenu inf?rieur ?
'minFactor' de 0.000976562\n"
- "Error in nls(formule, data = cbind.data.frame(x, y), start =
list(miny = min(y), : \n gradient singulier\n"
- "Error in numericDeriv(form[[3]], names(ind), env) : \n Valeur
manquante ou infinie obtenue au cours du calcul du mod?le\n")
- "Error in nlsModel(formula, mf, start, wts) : \n singular gradient
matrix at initial parameter estimates\n"
So it seems that I reach a local extremum each time. I know that most
of the problem comes from the choice of the initial values...
2011 Aug 16
0
exponential with decreasing
...$EWT
y<-Regress$MSI7
plot(y ~ x)
fm <- nls(y ~ f(x,a,b), data =Regress, start = c(a=1, b=1))
co <- coef(fm)
curve(f(x, a=co[1], b=co[2]), add = TRUE)
But in the line 7, it blocks with the following message:
Erreur dans numericDeriv(form[[3L]], names(ind), env) :
Valeur manquante ou infinie obtenue au cours du calcul du mod?le
De plus : Messages d'avis :
1: In min(x) : aucun argument trouv? pour min ; Inf est renvoy?
2: In max(x) : aucun argument pour max ; -Inf est renvoy?
- Please where is the problem?
- What I can do to obtain R^2?
- Is the method to verify homoscedasticity an...
2012 Nov 12
0
Re : samba Digest, Vol 119, Issue 11
????????????????????????????????? Chers correspondants,
Bonjour ! Merci pour votre correspondance que vous envoyez ? mon compte depuis une tr?s longue p?riode. N?anmoins je dois vous dire que je comprends la langue anglaise que
tr?s partiellement, aussi je ne retiens de vos ?crits que tr?s peu de choses. Par cons?quent, je vous demanderais de voir la possibilit? de me transmettre vos num?ros en
2003 Mar 12
2
[OT] Appropriate test?
Hi,
I'm having some problem with a dataset and I don't really know how to
analyse it.
I have 20 subjects in two groups of treatment (8 an 12 subjects).
Biological measure have been recorded at different time, from t0 (before
the treatment) to t7 (3 days after). The time elapsed between each
measure is not constant.
What is the most appropriate test to show a difference between the 2
1998 Jun 30
5
NT Crashes when doing large network file Xfers (was Re: NT crashes during smbtar)
Ernie,
Thanks for the great info.. Based on what you were seeing, would
you suspect that part of the problem is with the combination of NT
and the 3com card (3c595)? Currently, we are ONLY seeing this
under NT Workstation (not server) and almost all of our machines
have this same 3com 3c595 card (only if using 100BaseT)..
-- Rick
-----Original Message-----
From: Ernie Oporto