Displaying 3 results from an estimated 3 matches for "tvictor".
Did you mean:
victor
2004 Sep 10
1
Efficient Cartesian product of data.frames
Hello List,
I am looking for efficient code to produce the Cartesian product of two
or more data.frames. I'd like to be able to do this without resorting to
looping. I have searched the FAQ, web, etc without luck. That being
said, the help page for merge says that the function can produce what
I'm looking for if the by vectors are of zero length. Would someone be
so kind as to
2007 Aug 04
2
Mixture of Normals with Large Data
All:
I am trying to fit a mixture of 2 normals with > 110 million observations. I
am running R 2.5.1 on a box with 1gb RAM running 32-bit windows and I
continue to run out of memory. Does anyone have any suggestions.
Thanks so much,
Tim
[[alternative HTML version deleted]]
2004 Nov 16
1
Pairwise Distances -- How to vectorize the loop
R-List,
I'm trying to compute pairwise distances among pairs of observations,
which each pair containing data from 2 groups. There are more than
100000 unique pairs. I have programmed a distance function that has
three parameters, a vector of covariates from the ith observation in
Group 1, a vector of covarites from the jth observation in Group 2, and
a weighting matrix.
I have used