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dovik
2012 Feb 02
0
Organizing Large Datasets
Recently I've run into memory problems while using data.frames for a
reasonably large dataset. I've solved those problems using arrays, and
that has provoked me to do a few benchmarks. I would like to share the
results.
Let us start with the data. There are N subjects classified into G
groups. These subjects are observed for T periods, and each
observation consists of M variables. So,