search for: holt

...quot;,opt.crit="mse") As to my observation about 5-10 of them have been identified by ets to have a trend and an alpha, beta values have been thrown up - which have been same in all these cases. When I read up online it came up as a Brown's double exponential smoothing as opposed to Holt's exponential smoothing (where alpha and beta differ). I am guessing this is happening as AIC/AICc/BIC select a model based on accuracy as well as a weight on number of parameters (1 in case of brown's, 2 in case of holt's). Now if I want to see results of the best parameters from the H...

Hi, I'd like to know if the Holt-Winters function in R can modify the alpha paremeter in an "intelligent" way. I know it can vary from 0 to 1. Wich mathematical formula does it use to calculate the correct value of alpha? Thanks, bye. Carlo

I'm trying to find a good open source software to do sales forecasting using Holt Winters and Box Jenkins time series algorithm. Somebody pointed me that R is the best open source available for statistical computing. Are there functions to do Holt Winters and Box Jenkins time series prediction in R? If there is none, can some one point me a good GNU/freeware to do the sales fore...

Dear Members, I have been searching for a package in R which can handle multiple seasonality suggested by taylor(2003). It will be great help if anybody has used this on R before (i.e. which package). Thanks in Advance. Best Regards Atul Malik [[alternative HTML version deleted]]

Hello, I asked this question on the r-finance list server and didn't get a reply. Thought I would try here to. I am trying to deseasonalize some financial time series data and I wanted some feedback on the best methods for doing this. I found two Centered Moving Average and Holt-Winters. Which is better and/or more appropriate for financial time series data in your opinion? I understand that Holt-Winters is a type of exponential smoothing and I have a complete description of how to calculate Centered Moving Averages (seasonal indices), but no discussion on which is more a...

...rt=c(2001,3),end=c(2001,3)) <- 10 Error: couldn't find function "window<-" >#Doesn't work > Is there a good way to insert the value into the March 2001 location, please? other than: x.ts[15] <- 10 Thanks in advance! R Version 1.9.0 for Windows Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com

...quot;black","red"),pch=c(1,3)) > Fine. Now, I would like to put the legend box on the outside of the plot itself, perhaps in the lower left hand corner. I've been messing with mtext, but to no avail. Any help would be much appreciated. R Version 1.9.1 Windows Thanks, Laura Holt mailto: lauraholt_983 at hotmail.com

...ning curve for R. A method of learning I find very effective is to work through an existing program. Are there any libraries or archives of R programs on the web ? If not, would this be a good idea for the R website ? I hope this is not a FAQ: I have checked as far as I can. Best Wishes, Martin Holt

...revent this from happening. Any help is greatly appreciated! Janke Example code: #Desired result is a layout of 2 plots: one red and one black layout(matrix(1:2, nr=2)) par.ini <- par(no.readonly=TRUE) par(col="red") plot(1:100) par(par.ini) plot(1:10) ------------------ Janke ten Holt Dept. of Psychology/Sociology University of Groningen, the Netherlands

...error of my ways and have decided to use ESS for R and S + stuff. However, I have a question right from the beginning. I'm somewhat confused by the installation instructions. Do I install XEMACS or ESS first, please? Windows XP R Version 2.0.1 (S + 6.2) Thanks so much! Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com

Dear R : Sorry for the off topic question, but does anyone know the reference for the -2 Ln Lambda following a Chi Square distribution, please? Possibly one of Bartlett's? Thanks in advance! Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com

Hi R people: I would like to learn about classes, methods, S3 and S4. Which book would be the most helpful for this info, please: the green one or the white(and blue) one? Or is there something that would be even better, please? Thanks in advance. Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com R 2.1.0 Windows. trying to learn

...NAs. However, there are zeros in some of the factor columns, and I would like them to be left alone. Is there a "global" way to do this, please? I was thinking about use the results from "str" but am not sure. R Version 2.0.0 Windows. Thanks in advance. Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963

...here! Is ROracle available for Windows, please? I found a download site, but it's really for UNIX/Linux. Here is a "thought question", please: Why do the vector elements start at location 1 rather than zero, as C does? Thanks in advance! R Version 1.9.1 Windows Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com

....so is in /usr/lib/wine but even though I have defined the WINEDLLPATH to include that directory, when I try to run wine I get an error message that says... wine: error while loading shared libraries: libntdll.so: cannot load shared object file: No such file or directory. What's up? Jack C. Holt SAIC, Wireless Systems Group

...uot;,paste("raw3.df$",rw2$V1[3],sep="")) >p1 [1] "raw3.df$CITIZEN" > Essentially, I want to use the raw3.df$CITIZEN along with another value to generate a table. However, I'm stuck here. I know this is incredibly stupid. Thanks in advance. Sincerely Laura Holt mailto: lauraholt_983 at hotmail.com

I need to be able to send an sms alert to one's mobile/cell phone. For instance, when I receive a voicemail message in my inbox, I also want to be able to get a message on my cell phone alerting me of this e-mail. How possible is this? And if it is, what do I need to do to get the service up and running? Ideas are most welcome. Thanks, Julius.

...wing object: >a <- Surv(1:4,2:5,c(0,1,1,0)) a [1] (1,2+] (2,3 ] (3,4 ] (4,5+] >str(a) Error in "[.Surv"(object, 1:ile) : subscript out of bounds > Why does str(a) give an error, please? Or did I do something wrong? Thanks in advance. R Version 1.9.1 Windows Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com

Hi R-users, I have a question relating to the HoltWinters() function. I am trying to forecast a series using the Holt Winters methodology but I am getting some unusual results. I had previously been using R for Windows version 2.7.2 and have just started using R 2.9.1. While using version 2.7.2 I was getting reasonable results however upon changi...

...rs Jason DISCLAIMER: This electronic message together with any attachments is confidential. If you are not the intended recipient, do not copy, disclose or use the contents in any way. Please also advise us by return e-mail that you have received the message and then please destroy. Carter Holt Harvey is not responsible for any changes made to this message and / or any attachments after sending by Carter Holt Harvey. We use virus scanning software but exclude all liability for viruses or anything similar in this email or any attachment. -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-....