Nothing
cmpndKernGradient <-
function (kern, x, x2, covGrad) {
if ( nargs()<4 )
covGrad <- x2
g <- array(0, dim(kern$paramGroups)[1])
startVal <- 1
endVal <- 0
for ( i in seq(along=kern$comp) ) {
endVal <- endVal + kern$comp[[i]]$nParams
if ( !is.na(kern$comp[[i]]$index) ) {
if ( nargs() < 4 ) {
g[seq(startVal,len=kern$comp[[i]]$nParams)] <- kernGradient(kern$comp[[i]], x[,kern$comp[[i]]$index], covGrad)
## Used to be: g[startVal:endVal] <- kernGradient(kern$comp[[i]], x[,kern$comp[[i]]$index], covGrad)
} else {
g[seq(startVal,len=kern$comp[[i]]$nParams)] <- kernGradient(kern$comp[[i]], x[,kern$comp[[i]]$index], x2[,kern$comp[[i]]$index], covGrad)
## Used to be: g[startVal:endVal] <- kernGradient(kern$comp[[i]], x[,kern$comp[[i]]$index], x2[,kern$comp[[i]]$index], covGrad)
}
} else {
if ( nargs() < 4 ) {
g[seq(startVal,len=kern$comp[[i]]$nParams)] <- kernGradient(kern$comp[[i]], x, covGrad)
## Used to be: g[startVal:endVal] <- kernGradient(kern$comp[[i]], x, covGrad)
} else {
g[seq(startVal,len=kern$comp[[i]]$nParams)] <- kernGradient(kern$comp[[i]], x, x2, covGrad)
## Used to be: g[startVal:endVal] <- kernGradient(kern$comp[[i]], x, x2, covGrad)
}
}
startVal <- endVal + 1
}
g <- g %*% kern$paramGroups
return (g)
}
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