similar to: Variance inflation factors (VIF)

Displaying 20 results from an estimated 2000 matches similar to: "Variance inflation factors (VIF)"

2009 Mar 05
1
problems with nls?
I need to make nonlinear regression with the posterior script, but how is the problem? I have error in library (nls), package 'nls' has been merged into 'stats'. I need help? What other forms I have to make nonlinear regression? and how I find to calculate statistics y residuals, scatterplot. thanks SCRIPT ros<-read.table("Dataset.csv",header=T,sep=",")
2012 Jun 28
1
SVY: variance inflation factor VIF with complex survey
Hello, Seeking a way to get the variance inflation factor VIF for a model of regression in complex survey, I have understood that without this package (SURVEY) RGui VIF obtained as follows: fit <- lm(mpg~disp+hp+wt+drat, data=mtcars) vif(fit) But I want to know if survey, Vif is obtained so vif( svyglm(api00~ell+meals+mobility, design=dstrat)) Thank you, happy day
2010 Jan 07
0
variance inflation factor for linear mixed effects
hello all - i was searching for theoretical articles/vector equations regarding variance inflation factor (or generalization) for the linear mixed effects model (repeated measures data) sincerely, tom -- View this message in context: http://n4.nabble.com/variance-inflation-factor-for-linear-mixed-effects-tp1009143p1009143.html Sent from the R help mailing list archive at Nabble.com.
2012 Jul 11
1
Variance Inflation factor
Hi All, I need to calculate VIF (variance inflation factor) for my linear regression model. I found there was a function named vif in 'HH' package. I have two questions: 1) I was able to install that package in my R under windows. But while trying to install that package in UNIX, I got error: Package HH is not available. Does somebody know why? 2) Does
2003 Jul 23
6
Condition indexes and variance inflation factors
Has anyone programmed condition indexes in R? I know that there is a function for variance inflation factors available in the car package; however, Belsley (1991) Conditioning Diagnostics (Wiley) notes that there are several weaknesses of VIFs: e.g. 1) High VIFs are sufficient but not necessary conditions for collinearity 2) VIFs don't diagnose the number of collinearities and 3) No one has
2012 Sep 20
2
Variance Inflation Factor VIC() with a matrix
Hi everyone, Running the vif() function from the car package like ---------------------------------------------------- > reg2 <- lm(CARsPur~Delay_max10+LawChange+MarketTrend_20d+MultiTrade, data=data.frame(VarVecPur)) > vif(reg2) Delay_max10 LawChange MarketTrend_20d MultiTrade 1.010572 1.009874 1.004278 1.003351
2005 Nov 19
1
vif interface creation problem with xen unstable
I''m using vif-route as my network script. I''ve added set -x to the xen hotplug script change. I''ve also added a command to do a listing of the xenstore directory. Here''s the snippet: == ++ ip= +++ xenstore_read_default backend/vif/4/0/ip '''' +++ xenstore-read backend/vif/4/0/ip xenstore-read: couldn''t read path backend/vif/4/0/ip +++
2009 Jul 27
2
Forecasting Inflation
Dear All, I wanted to forecast Inflation for Indian Economy. please send what techniques to be used after the variable selection. WPI, CPI, Money supply, IIP, Interest rate and so on..How i can use R for the same [[alternative HTML version deleted]]
2009 Dec 12
1
About zero-inflation poisson model
Hello all, I am Xiongqing Zhang, come from Beijing of China. I know you from the web site: http://finzi.psych.upenn.edu/Rhelp08/2008-February/154627.html. I am not very clear about the R-project software. But I want to estimate the parameters and errors of zero-inflation poisson model. Can?you help me? Data is in the attachement. Thank you. I will be very appreciated if you can help me. Best
2010 Feb 25
1
Zero inflation model - pscl package
I have some questions regarding Zero Inflation Poisson models. I am using count data to analyze abundance trends of salamanders. However, I have surveys which differ in the amount of effort (i.e. the number of people searching and amount of time - I am using a museum database so not all surveys were conducted by me). Therefore I need to account for the effort. If change the count (response
2009 Mar 15
1
BOOTSTRAP_CROSS VALIDATION
I need a script that works for Bootstrap validation. Could someone explain me when should I use the Bootstrap technical or Jackknife? Thanks -- View this message in context: http://www.nabble.com/BOOTSTRAP_CROSS-VALIDATION-tp22529500p22529500.html Sent from the R help mailing list archive at Nabble.com.
2023 Aug 31
2
[PATCH v2] virtio_balloon: Fix endless deflation and inflation on arm64
The deflation request to the target, which isn't unaligned to the guest page size causes endless deflation and inflation actions. For example, we receive the flooding QMP events for the changes on memory balloon's size after a deflation request to the unaligned target is sent for the ARM64 guest, where we have 64KB base page size. /home/gavin/sandbox/qemu.main/build/qemu-system-aarch64
2012 Jun 26
1
Zero inflated: is there a limit to the level of inflation
Hello, I have count data that illustrate the presence or absence of individuals in my study population. I created a grid cell across the study area and calcuated a count value for each individual per season per year for each grid cell. The count value is the number of time an individual was present in each grid cell. For illustration my data columns look something like this and are repeated for
2023 Aug 30
1
[PATCH] virtio_balloon: Fix endless deflation and inflation on arm64
On 29.08.23 03:54, Gavin Shan wrote: > The deflation request to the target, which isn't unaligned to the > guest page size causes endless deflation and inflation actions. For > example, we receive the flooding QMP events for the changes on memory > balloon's size after a deflation request to the unaligned target is > sent for the ARM64 guest, where we have 64KB base page
2023 Aug 29
2
[PATCH] virtio_balloon: Fix endless deflation and inflation on arm64
The deflation request to the target, which isn't unaligned to the guest page size causes endless deflation and inflation actions. For example, we receive the flooding QMP events for the changes on memory balloon's size after a deflation request to the unaligned target is sent for the ARM64 guest, where we have 64KB base page size. /home/gavin/sandbox/qemu.main/build/qemu-system-aarch64
2010 Feb 11
1
Zero-inflated Negat. Binom. model
Dear R crew: I am sorry this question has been posted before, but I can't seem to solve this problem yet. I have a simple dataset consisting of two variables: cestode intensity and chick size (defined as CAPI). Intensity is a count and clearly overdispersed, with way too many zeroes. I'm interested in looking at the association between these two variables, i.e. how well does chick
2010 Feb 04
1
Zero inflated negat. binomial model
Dear R crew: I think I am in the right mailing list. I have a very simple dataset consisting of two variables: cestode intensity and chick size (defined as CAPI). Intensity is clearly overdispersed, with way too many zeroes. I'm interested in looking at the association between these two variables, i.e. how well does chick size predict tape intensity? I fit a zero inflated negat. binomial
2009 Feb 09
1
percentage of variance explained by factors
Hello! I've run a simple linear model: result<-lm(DV~A+B+C,data=Data) My Data$A,Data$B, and Data$C are factors. So, lm automatically recoded them into dummy variables. I have all the results I need but one. Question: Where could I see the variance explained by all A dummy variables together, then all B dummy variables together, and all C dummy variables together - when other predictors
2011 Sep 26
1
normalizing a negative binomial distribution and/or incorporating variance structures in a GAMM
 Hello everyone, Apologies in advance, as this is partially a stats question and partially an R question.  I have been using a GAM to model the activity level of bats going into and coming out from a forested edge.  I had eight microphones set up in a line transect at each of eight sites, and I am hoping to construct a model for each of 7 species.  My count data has a reverse J-shaped skew and
2010 Feb 04
2
help needed using t.test with factors
I am trying to use t.test on the following data: date type INTERVAL nCASES MTF SDF MTO SDO nFST MF nOBS MO MB BIASCV BIASEV ME MAE RMSE CRCF 2001-06-15 avn GE1.00 4385 0.246 0.300 1.502 0.556 1367 1.373 4385 1.502 1.471 0.285 0.164 -1.256 1.266 1.399 0.056 2001-06-15 avn