Displaying 2 results from an estimated 2 matches for "bigqr".
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bigq
2010 Oct 31
1
biglm: how it handles large data set?
...if (!is.null(weights)) {
if (!inherits(weights, "formula"))
stop("`weights' must be a formula")
w <- model.frame(weights, data)[[1]]
}
else w <- NULL
mf <- model.frame(tt, data)
mm <- model.matrix(tt, mf)
qr <- bigqr.init(NCOL(mm))
qr <- update(qr, mm, model.response(mf), w)
rval <- list(call = sys.call(), qr = qr, assign = attr(mm,
"assign"), terms = tt, n = NROW(mm), names = colnames(mm),
weights = weights)
if (sandwich) {
p <- ncol(mm)
n <-...
2012 Jan 03
0
Biglm source code alternatives (E.g. Call to Fortran)
...21.00 16.4 21.00 16.4
"as.character" 17.92 14.0 17.92 14.0
"[.data.frame" 14.04 11.0 22.54 17.6
"*" 6.44 5.0 6.44 5.0
"update.bigqr" 5.34 4.2 15.32 12.0
"-" 4.52 3.5 4.52 3.5
"anyDuplicated.default" 4.12 3.2 4.12 3.2
"/" 3.76 2.9 3.76 2.9
&qu...