search for: delta0

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2008 Jan 04
2
R2WinBUGS sending variables as factors
...ce University of Tasmania and CSIRO Marine and Atmospheric Research ph +62 3 6232 5182 mb +61 429 32 5182 model { #Centre variables mSeaW <- mean(SeaW[]) s_dSeaW <- sd(SeaW[]) #normalise Variables nSeaWiFS <- mSeaW/s_dSeaW for(i in 1:N) { log(lambda[i]) <- delta0 + alpha1 * Month[i] + alpha2 * Lat[i] + beta1 * (SeaW[i] - nSeaW) logit(p[i]) <- gamma0 mu[i, 1] <- 0 mu[i, 2] <- lambda[i] mu.i[i] <- mu[i, index[i]] index[i] ~ dcat(theta[i, 1:2]) theta[i, 1] <- p[i] theta[i, 2] <- 1 - p[i] # mixture YFTCPUE[i] ~ dpo...
2002 Mar 12
1
Sparse matrix methods
Does anyone know of contributions to R for solving sparse linear systems? In particular for spatial stats I am interested in solving large positive definite symmetric systems. Thanks in advance, Doug ----------------------------------------------------------------------------- Doug Nychka, Geophysical Statistics Project Email: nychka at ucar.edu National Center for Atmospheric
2010 Mar 16
0
recursive term
Hi r-users;   I have this values: eign_val <- c(137.810447,3.538721,2.995161,1.685670) alp    <- 1.6549 ;  lamda <- eign_val lamda_m <- min(lamda)   First I calculated manually: delta0 <- 1 delta1 <- alp*delta0*(4-lamda_m*(1/lamda[1]+1/lamda[2]+1/lamda[3]+1/lamda[4]))  delta1 delta2 <- (alp/2)*(delta1*(delta1/alp) + delta0*((1-lamda_m/lamda[1])^2+ (1-lamda_m/lamda[2])^2+(1-lamda_m/lamda[3])^2+(1-lamda_m/lamda[4])^2)) delta2 delta3 <- (alp/3)*(delta2*(delta1/alp) + de...