Re: Work unit age
Subject: Re: Work unit age
From: Martin
Date: 15/08/2003, 00:53
Newsgroups: alt.sci.seti

Robi wrote:
Martin wrote:
Stratcat® wrote:
[...]

do, but I'm assuming for WU's to be corroborative, they'd have to be
consistent within a reasonably narrow window of deviation.

The returned results are compared for an EXACT match. The results must
be IDENTICAL, otherwise there must have been a computational error.


Sorry, but no.
With the fft algorythms there are "rounding" errors which differ
from processor to processor (and OS? not sure here).
[...]

Yes...? Please explain further...

(Big hint: Have a look at where the rounding errors are. Note that numbers for the results will be deliberately rounded for the analysis! (:-))


The only room for variation is for exactly where in the analysis a WU is
abandoned due to RFI. The whole result is discarded then in any case,
other than for marking that WU as unusable.

I honestly doubt that. Agreed, the analysis is stopped, but only due to
an overflow of data. That doesn't mean that the WU is useless (or unusable
as you put it).

On what basis?...


[...]
Martin


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