search for: ochiaga

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2015 Mar 04
1
nonlinear least square
...arily initialising the parameters of the model. I find it hard to get the initial value of the parameter. Below is a sample of the code I have. *nachman<-nls(OARmedium$OCCUPANCY~1exp(-alpha*OARmedium$MEAN^beta),start=list(alpha=0.2,beta=0.1),data=OARmedium)summary(nachman)* Thanks, *Evans Ochiaga* *African Institute for Mathematical Sciences* *6 Melrose Road* *Muizenberg, South Africa* *Msc in Mathematical Sciences+27 84 61 69 183 * *"When I cannot understand my Father?s leading, And it seems to be but hard and cruel fate, Still I hear that gentle whisper ever pleading, God is wor...
2015 Mar 18
1
Help
...98 0.9999650 1.0000000 0.003702546 : 0.2965898 0.9999650 1.0000000 0.003702546 : 0.2965898 0.9999650 1.0000000 Error in nls(Occupancy ~ 1 - (theta * beta^(2 * Resolution^(1/2)) * delta^Resolution), : step factor 0.000488281 reduced below 'minFactor' of 0.000976562 Regards, *Evans Ochiaga* *African Institute for Mathematical Sciences* *6 Melrose Road* *Muizenberg, South Africa* *Msc in Mathematical Sciences+27 84 61 69 183 * *"When I cannot understand my Father?s leading, And it seems to be but hard and cruel fate, Still I hear that gentle whisper ever pleading, God is wor...
2015 Mar 19
0
nls
...d it will usually take more time and computing effort because it tries hard to reduce the SS. A reproducible example would get you a more informed response. John Nash On 15-03-19 07:00 AM, r-devel-request at r-project.org wrote: > Date: Wed, 18 Mar 2015 14:14:12 +0200 > From: Evans Otieno Ochiaga <evansochiaga at aims.ac.za> > To: r-devel at r-project.org > Subject: [Rd] Help > Message-ID: > <CAObCh3XfvtCz+qWtSS+pSPrhWtUKtdZoYANN=_4AJndziiiDOQ at mail.gmail.com> > Content-Type: text/plain; charset="UTF-8" > > Hi to All, > > I am fitting so...
2015 Mar 03
2
Asssistance
...upancymean.data.frame) return(list(summary(poission), summary(nachman), summary(logistic), summary(nbd), summary(power), summary(inbd), summary(fnbd), summary( bayesianII))) } Modelsfunc(bcidata) Your assistance will be highly appreciated. Thanks in advance. Regards, *Evans Ochiaga* *African Institute for Mathematical Sciences* *6 Melrose Road* *Muizenberg, South Africa* *Msc in Mathematical Sciences+27 84 61 69 183 * *"When I cannot understand my Father?s leading, And it seems to be but hard and cruel fate, Still I hear that gentle whisper ever pleading, God is wor...