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Old 2014-05-20, 13:47   #1
Apr 2014
Marlow, UK

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Default Distribution of relations over the sieving interval in SIQS

I was wondering whether anyone might know why the distribution, over the sieving interval, of relations found by SIQS seems to have 2 narrow spikes round about 0.7M either side of 0 (though not quite symmetrical, presumably due to asymmetrical parabolas?) See attachment. The peaks are around 3 times the general level. This is true of full relations, 1-partials and 2-partials.

Is this a well-known phenomena? Could it be used in any way to tune the QS algorithms?


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