Outer product of tall arrays
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I have two column vectors x and y which I cast as tall arrays. I want to take their outer product x*y', however I cannot transpose a tall array. What other way is there to perform the computation x*y'?
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John D'Errico
el 25 de Sept. de 2022
Suppose the column vectors are small enough, that you can trivially store them in memory.
So say that x and y are only 1e7 elements in length. Then x*y' would use only 8e14 bytes of memory to store.
This is still a huge array, 800 terabytes.
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