similar to: DUD (Does not Use Derivatives) for nonlinear

Hi, All SAS has DUD (Does not Use Derivatives)/Secant Method for nonlinear regression, does R offer this option for nonlinear regression? I have read the helpfile for nls() and could not find such option, any suggestion? Thanks, Derek [[alternative HTML version deleted]]

SAS has DUD (Does not Use Derivatives)/Secant Method for nonlinear regression, does R offer this option for nonlinear regression? I have read the helpfile for nls() and could not find such option, any suggestion? Thanks, Derek [[alternative HTML version deleted]]

While working on 'random walk' applications, I got interested in optimizing noisy objective functions. As an (artificial) example, the following is the Rosenbrock function, where Gaussian noise of standard deviation `sd = 0.01` is added to the function value. fn <- function(x) (1+rnorm(1, sd=0.01)) * adagio::fnRosenbrock(x) To smooth out the noise, define another

Could someone help me on the following: SAS has DUD (Does not Use Derivatives) for nonlinear regression. Does "R" has a similar capability? I am not good at derivatives and may get my derivative wrong before feeding it to a nonlinear regression procedure. Any help would be much appreciated. Liu Hancock Forest Management NZ Tokoroa, New Zealand DDI: 07-8850387 Mobile: 021-1576178

I just need to confirm something with pattern matching folks. I have a factor with the following levels in a very large data set: > levels(all$Classical.Statistic) [1] "" "AB;ABD" "CollapsedSteps" "CR_P" "CR_Prop;CR_P;AB" [6] "NMK"

Hi Don, Hi to all readers, many thanks for all your answers and all your help. I adapted Don's code to my data and Don's code does the trick: str(Kunden01) for (year in 2011:2015) { Reeller_Kunde <- paste0("Reeller_Kunde_", year) Umsatz <- paste0("Umsatz_", year) cat('Creating', Reeller_Kunde,'from', Umsatz,'\n') Kunden01[[

Hi, I am new to R, and as a first exercise, I decided to try to implement an XIRR function using the secant method. I did a quick search and saw another posting that used the Bisection method but wanted to see if it was possible using the secant method. I would input a Cash Flow and Date vector as well as an initial guess. I hardcoded today's initial date so I could do checks in Excel.

Hi all, In my effort to get RCS archive access via smbmount, I stumbled across another interesting bit of behaviour with smbmount that could be playing a part - but does not involve RCS. Normally, under Linux - or any Unix - the following sequence of commands works: [cpratt@cpratt-desk2 ~/dud]$ ls -la total 3 drwxr-xr-x 2 cpratt users 1024 May 12 18:09 . drwx------ 32 cpratt users

On 10/2/19 9:47 PM, Jonathan Billings wrote: > On Oct 2, 2019, at 3:39 PM, Ljubomir Ljubojevic <centos at plnet.rs> wrote: >> Richard on CentOS-devel mailing list has similar problem but suggests it >> might be issue only with CentOS, he says he had to add the kernel line >> to make it work. >> Name of the tread is: >> [CentOS-devel] Booting CentOS 8 in a VM

Hi, I am Ken.. I am trying to add dud(driver update disk) to centos5.6 using network method, I can successfully add dud to centos5.6 using http and ftp method, but fail when using nfs method. However those all three methods are officially supported in the centos5.6. As indicated in the centos5.6 website, we can see they not only support http, ftp, but also nfs.

Hi all, Some (then all) of our workstations were complaining about incorrect ACLs on GPOs and were unable to read the gpt.ini to apply the GPOs. So I did a sysvolcheck and sure enough I'd lost the ACLs when I moved our sysvol share to a new location on the server (whoops, mea culpa). I ran a sysvolreset which took a long time to return (some 5 minutes, please see my post on slow winbind

On 10/10/19 3:18 PM, Phelps, Matthew wrote: > On Thu, Oct 10, 2019 at 9:04 AM Nux! <nux at li.nux.ro> wrote: > >> There was a recent thread about Redhat's removal of drivers from LSI >> SAS2, it's probably the problem you are facing. >> It can be worked around with the help of Elrepo repo. >> >> >>

Hi All, I have a situation where I want an 'if' variable to be parameterized. It's entirely possible that the way I'm trying to do this is wrong, especially given the error message I get that indicates I can't do this using an 'if' statement. Essentially, I have data where I think a relationship enters when a variable (here Pwd) is below some value (z). I don't

Hi R-help! I'm trying to understand how R's nlm function updates its estimate of the Hessian matrix. The Dennis/Schnabel book cited in the references presents a number of different ways to do this, and seems to conclude that the positive-definite secant method (BFGS) works best in practice (p201). However, when I run my code through the optim function with the method as "BFGS",

Hi all, I am writing a simple function to implement regularfalsi (secant) method. ################################################### regulafalsi=function(f,x0,x1){ x=c() x[1]=x1 i=1 while ( f(x[i])!=0 ) { i=i+1 if (i==2) { x[2]=x[1]-f(x[1])*(x[1]-x0)/(f(x[1])-f(x0)) } else { x[i]=x[i-1]-f(x[i-1])*(x[i-1]-x[i-2])/(f(x[i-1])-f(x[i-2])) } } x[i] }

On 2019-12-02 10:00, Fabian Arrotin wrote: > On 02/12/2019 12:42, Alexandre Leonenko wrote: >> Hey guys, >> >> I'm stumped in how to add the kmod rpm to pxe install. I need it to be installed but also loaded during the install as well. >> The rpm in question is the 3w-9xxx from elrepo

On Wed, Oct 2, 2019 at 4:10 PM Akemi Yagi <amyagi at gmail.com> wrote: > > On Wed, Oct 2, 2019 at 3:35 PM G?nther J. Niederwimmer <gjn at gjn.priv.at> wrote: > > > > > This Board have 2 Controller!? > > 00:1f.2 RAID bus controller: Intel Corporation C600/X79 series chipset SATA > > RAID Controller (rev 06) > > > > On this controller all

I need to calcuate the cumulative probability for the Natural Exponential Family - Hyperbolic secant distribution with a parameter theta between -pi/2 and pi/2. The integration should be between 0 and 1 as it is a probability. The function "integrate" works fine when the absolute value of theta is not too large. That is, the NEF-HS distribution is not too skewed. However, once the

On 02/12/2019 12:42, Alexandre Leonenko wrote: > Hey guys, > > I'm stumped in how to add the kmod rpm to pxe install. I need it to be installed but also loaded during the install as well. > The rpm in question is the 3w-9xxx from elrepo https://centos.pkgs.org/8/elrepo-x86_64/kmod-3w-9xxx-2.26.02.014-1.el8_0.elrepo.x86_64.rpm.html > > I'm constantly getting the

On 02/12/2019 16:08, Valeri Galtsev wrote: > > > On 2019-12-02 10:00, Fabian Arrotin wrote: >> On 02/12/2019 12:42, Alexandre Leonenko wrote: >>> Hey guys, >>> >>> I'm stumped in how to add the kmod rpm to pxe install. I need it to >>> be installed but also loaded during the install as well. >>> The rpm in question is the 3w-9xxx