similar to: Warning messages after auto.arima

Can I say that RPART is a modified algo of CART and PARTY a modified of CHAID? Thanks. ---- Chua Siang Li Consultant - Operations Research Acceval Pte Ltd Tel: 6297 8740 Email: siang.li.chua at acceval-intl.com Website: www.acceval-intl.com This message and any attachments (the "message"...{{dropped:12}}

Hello there. I have fitted a rpart model. > rpartModel <- rpart(y~., data=data.frame(y=y,x=x),method="class", ....) and can use rpart$where to find out the terminal nodes that each observations belongs. Now, I have a set of new data and used predict.rpart which seems to give only the predicted value with no information similar to rpart$where. May I know how

Hello there. I uses the following codes for the purpose of variable selection. > lmModel <- lm(y~.,data.frame(y=y, x=x)) > step <- stepAIC(lmModel, direction="both") > step$anova Stepwise Model Path Analysis of Deviance Table Initial Model: y ~ x.Market.Price + x.Quantity + x.Country + x.Incoterm + x.Channel + x.PaymentTerm Final

Hi. I uses rpart to build a regression tree. Y is continuous. Now, I try to predict on a new set of data. In the new set of data, one of my x (call Incoterm, a factor) has a new level. I wonder why the error below appears as the guide says "For factor predictors, if an observation contains a level not used to grow the tree, it is left at the deepest possible node and

Hi. I need some advises on how to use R to find pi (i is the index) with the following objective function and constraint: max (sum i)[ f(ai, bi, pi) * g(ci, di, pi) * Di ] s.t. (sum i)[ f(ai, bi, pi) * Di * pi] / (sum i)[ f(ai, bi, pi) * Di ] <= constant f and g are diffentiable. So, I am thinking of optim with method = "BFGS"? But wonder how to include the

Hi dear sirs, I am wondering why the fit of the time serie x with an arima and the fit of diff(x) with an arma (same coeff p & d) differ one from another here are the output of R: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% > modelarma<-arma(diff(x),c(7,5)) > modelarma Call: arma(x = diff(x), order = c(7, 5)) Coefficient(s): ar1 ar2 ar3 ar4 ar5 ar6 ar7 ma1 ma2 0.06078

Hello there. Is there any function in R that can do cluster on a set of data that has both categorical and numerical variables? thanks. siangli

Dear R-helpers, I would appreicate if someone can help me on the transfer parameter in ARIMAX and also see what I am doing is correct. I am using ARIMAX with 2 Exogeneous Variables and 10 years data are as follows: DepVar Period, depVar, IndepVar1 Period, indepVar1, IndepVar2 Period, indepVar2 Jan 1998,708,Jan 1998,495,Jan 1998,245.490 Feb 1998,670,Feb 1998,421.25,Feb 1998,288.170 Mar

hi i have switch to using oddcast under window platform and now using icecastwin32 as server in this case is there any possible way to let icecastwin32 to stream Wma? pls advise thanks you -----Original Message----- From: Geoff Shang [mailto:geoff@hitsandpieces.net] Sent: Wednesday, February 08, 2006 1:06 PM To: Neo Jiun Siang - R&D Cc: icecast@xiph.org; njsalan@hotmail.com Subject: RE:

thanks alot Geoff by the way is there any possible ways to add plug-in to icecast2 server to stream Wma? regardless of the license problem -----Original Message----- From: Geoff Shang [mailto:geoff@hitsandpieces.net] Sent: Tuesday, February 07, 2006 8:08 PM To: Neo Jiun Siang - R&D Cc: icecast@xiph.org; njsalan@hotmail.com Subject: RE: [Icecast] guideline for plug-in to icecast2 server Neo

hi actually im trying to add feature to ices2 to able to stream mix file format such as ogg and mp3 in the same playlist.m3u without extra decoding and encoding that function like ezstream. the reason i dont want to use ezstream as source client becoz after going thru decoding and encoding, the audio quality drops. Therefore im trying to find out is there any easy way out to add plug-in to

I've just recently converted my Windows pc to Mandrake Linux & I've got everything I need working except for this software - Equis Metastock. I've managed to install it. However, on execution, it dies with the following msg: "A CreateFont error occurred while loading the Symbols font: C:\Program Files\Equis\MetaStock\equis.ttf". On the wine console, the following msg

Helo there. I am using kmeans of base package to cluster my customers. As the results of kmeans is dependent on the initial centroid, may I know: 1) how can we specify the centroid in the R function? (I don't want random starting pt) 2) how to determine the optimal (if not, a good) centroid to start with? (I am not after the fixed seed solution as it only ensure that the

hi all i would like to find out is that any ways to add plugin to icecast2 and ice2 to stream mp3 .Is there a list of gulidline for adding feature to present icecast2 and ices2. i will a appretiated for the help from icecast memeber and developer thank you .