search for: zeta

...BLES AND ROWS REFER # TO OBSERVATIONS. ########## PARAMETERS ############################### # alpha: interaction between son targeting and family size # beta : son targeting # gamma : family size # delta : a 1x6 vector of probabilities of male birth at various parities (q1, q2, q3, q4, q5, q6) # zeta : a 1x11 vector of conditional probabilities with zeta[1]=1 always alpha <- paramets[1] # FIRST PARAMETER beta <- paramets[2:9] # SECOND TO SEVENTH PARAMETER gamma <- paramets[10:16] delta <- paramets[17] zeta <- paramets[18:27] # LAST 10 PARAMETERS ################# VAR...

...rval using the function 'integrate' from the 'stats' package. As an example, please consider the function h(u)=sin(pi*u) + sqrt(2)*sin(pi*2*u) + sqrt(3)*sin(pi*3*u) + 2*sin(pi*4*u) Two alternative ways to 'build' this function are as in f and g below: coeff<-sqrt(1:4) zeta<-function(i) {force(i); function(u){ zeta<-sqrt(2)+sin(pi*i*u) }} f<-function(u){ f<-0 for (j in 1:4){ f<-f+coeff[j]*(zeta(j)(u)) } f<-f } g<-function(u){ g<-crossprod(coeff,zeta(1:4)(u)) } Obviously, f and g are equivalent, but in the actual code I am wri...

https://bugs.freedesktop.org/show_bug.cgi?id=92306 Bug ID: 92306 Summary: GL Excess demo renders incorrectly on nv43 Product: Mesa Version: git Hardware: x86 (IA32) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/DRI/nouveau Assignee: nouveau

...how the generalized hyperbolic distribution is standardized. One reference is the rugarch vignette, page 16-18: http://cran.r-project.org/web/packages/rugarch/vignettes/Introduction_to_the_rugarch_package.pdf I looked at the code of the dsgh function in the fBasics package: > dsgh function (x, zeta = 1, rho = 0, lambda = 1, log = FALSE) { if (length(zeta) == 3) { lambda = zeta[3] rho = zeta[2] zeta = zeta[1] } param = .paramGH(zeta, rho, lambda) ans = dgh(x, param[1], param[2], param[3], param[4], lambda, log) ans } <environment: namespac...

...likelihood estimation, I am trying to learn to program likelihoods in R. I started with a simple probit model but am unable to get the code to work. Any help or suggestions are most welcome. I give my code below: ************************************ mlogl <- function(mu, y, X) { n <- nrow(X) zeta <- X%*%mu llik <- 0 for (i in 1:n) { if (y[i]==1) llik <- llik + log(pnorm(zeta[i,], mean=0, sd=1)) else llik <- llik + log(1-pnorm(zeta[i,], mean=0, sd=1)) } return(-llik) } women <- read.table("~/R/Examples/Women13.txt", header=TRUE) # DATA # THE DA...

This is probably a simple problem but I don't see a solution. I have a data.frame with a number of columns where I would like 0 <- NA thus I have df1[,144:157] <- NA if df1[, 144: 157] ==0 and df1[, 190:198] <- NA if df1[, 190:198] ==0 but I cannot figure out a way do this. cata <- c( 1,1,6,1,1,NA) catb <- c( 1,2,3,4,5,6) doga <- c(3,5,3,6,4, 0) dogb <- c(2,4,6,8,10,

Hi everyone, I am plotting a boxplot with main title as main = bquote(paste(.(ts.ind[s]), ": ", bar(zeta), " Boxplot from 2001 to 2009", sep = "")) but it doesn't work.  The program said they cannot find the function "bar".  Does anyone know how to do it correctly?  Thanks. tin [[alternative HTML version deleted]]

...of parameters which change depending on circumstances. I thought that a sexy way of dealing with this would be to assign the parameters as objects in the environment of the function in question. The following toy example gives a bit of the flavour of what I am trying to do: foo <- function(x,zeta) { for(nm in names(zeta)) assign(nm,zeta[nm],envir=environment(bar)) bar(x) } bar <- function(x) { alpha + beta*exp(gamma*x) } v <- c(alpha=2,beta=3,gamma=-4) ls() [1] "bar" "foo" "v" foo(0.1,v) alpha 4.01096 2+3*exp(-4*0.1) [1] 4.01096 # Check; yes...

Hello, I am looking into description of surf.ls(spatial) and see under value $beta - the coefficients. When I use polynomial of degree 2 to fit surface I expect to get 4 coefficients: z = a_1 x^2 + a_2 xy + a_3 y^2 + a_4 What do beta really stand for and why do I get $beta vector of length 6? Thakns, Mark

Dear R user, I want to estimate the parameter of ZETA or/and ZIPF distributions using R, given a series of integer values. Do you know a package (similar to MASS) or a function (similar to fitdistr) I can use to estimate the parameter of these distributions using MLE method? Otherwise do you know a function (which use MLE method to estimate distr...

Hi, Is there any R library that is capable of handling polygamma function (Hurwitz zeta function also works)? I am aware of digamma(0 and trigamma(), but could not find more advanced versions. I'd appreciate any help. Hakan Demirtas

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Hi, I am trying to use boot() to refit an ordinal logit (polr in MASS) model. (A very basic bootstrap which samples from the data frame without replacement and updates the model.) I need to extract two statistics per run (the coefficients and zeta) and I tried concatenating them into a single vector after fitting, but I get the following error: Error in "[<-"(*tmp*, r, , value = statistic(data, i[r, ], ...)) : number of items to replace is not a multiple of replacement length This error goes away if I just return the coef...

...that's not yet defined in the pipe formats header, and I actually don't know if it's even possbible to define that cleanly the way pipe_format is laid out. Christoph -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: 0001-nv50-correct-zeta-formats.patch Url: http://lists.freedesktop.org/archives/nouveau/attachments/20090704/87c7d232/attachment.ksh

Dear R users, I have the following codes: zeta <- rep(1,8) n <- 7 for (i in 1:2){ beta <- zeta[1:n+(i-1)*(n+1)] print(beta) parm <- zeta[i*(n+1)] print(parm) } ################### The output is as follows: [1] 1 1 1 1 1 1 1 [1] 1 [1] NA NA NA NA NA NA NA [1] NA ####################### The outcome I want to get is: [1] 1 1 1 1 1 1 1...

...t's bad. There's no reason to suppose beta[pc+1L] is larger than -100 or that the cumulative sum is smaller than 100. For practical datasets those assumptions are frequently violated, causing the optimization to fail. A work-around is to center the explanatory variables. This helps keep the zetas small. The correct approach is to use the values -Inf and Inf as the first and last cut points. The functions plogis, dnorm, etc all behave correctly when the input is one of these values. The dgumbel function does not, returning NaN for -Inf. Correct this as follows dgumbel <- function (x, l...

Hello I have the following data frame which I read from an EXCEL file, and when i try to call one of its columns with a space in their names I am not being able to. For example if I do EURODOLLAR$ED1.Comdty Date I obtain the following error: Error: inesperado símbolo en "EURODOLLAR$ED1.Comdty Date" I have also tried using . or _ instead of the space and have obtained no succes. How do I

...case MESA_FORMAT_ARGB8888: return 0x08; case MESA_FORMAT_RGB565: return 0x03; case MESA_FORMAT_Z16: return 0x10; case MESA_FORMAT_Z24_S8: return 0x20; Does that mean that color only goes from bit 0 to 3, and zeta is bit 4-5. Unlike nv30 where color goes from 0 to 4, and has zeta on 5-6 ? On nv20, 0x10 and 0x20 is valid, but not 0x40. And it seems nv20 dri also cause data errors because it does not always set zeta with 0x10/0x20, it only does that in depth/stencil case. 2. TX_FILTER(0) MIN NEAREST + MAG...

Jean-Marc Valin wrote: >If you set the denoiser to "on" and the VAD to "off", what difference >does it make in CPU time? > <p>Same program, running on Athlon XP 1700+: Test 1, using VAD, but AGC, denoise off: tevek@canarsie:~/work/hms/app_conference $ time ./vad_test /tmp/demo-instruct.sw 5 reading from /tmp/demo-instruct.sw, repeating 5 times read 537760

Hi, i have this file pressure,k,eps,zeta,f,velocity:0,velocity:1,velocity:2,vtkValidPointMask,Point Coordinates:0,Point Coordinates:1,Point Coordinates:2,vtkOriginalIndices 0.150545,0.000575811,0.0231277,0.000339049,-0.0193008,0.00318629,-6.24066e-07,5.39599e-05,^A,7,0,0,0 0.150546,0.000782719,0.0226157,0.000497957,-0.0192084,0.00367781,5...