[Numpy-discussion] corrcoeff on big matrix
Colin J. Williams
cjw at sympatico.ca
Tue Mar 16 19:20:12 EST 2004
I'm puzzled that anyone would want to explore the correlation among 42
variables. I would suggest (1) having a go with the more significant of
the 42 variables and (2) working with a a much smaller sample, say < 4,000.
Todd Miller wrote:
[snip]
>On Tue, 2004-03-16 at 10:41, CL WU wrote:
>
>
>One possibility is to consider using Float32 to stretch out your
>memory. I don't know whether that's numerically viable or not.
>
>Another way is 64-bit computing. That is largely unexplored territory,
>and Python itself has issues there. It will likely take some work
>because we haven't done it yet ourselves.
>
>
Todd,
I'd be grateful if you could clarify this, do we nor have _nt.Float64 now?
Colin W.
>I hope this at least sheds some light on the problem, if not the actual
>solution.
>
>Regards,
>Todd
>
>
>
>>BTW, I am using numarray 0.9/python 2.3.3 on win2kSP4
>>
>>Thanks.
>>
>>Chunlei
>>
>>
>>
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