[Cado-nfs-discuss] [Some parameter question] Bf and Bg parameter

paul zimmermann Paul.Zimmermann at inria.fr
Mon Jul 2 10:59:56 CEST 2018


> From: canny georgina <cannysiska at gmail.com>
> Date: Mon, 2 Jul 2018 15:55:26 +0700
> 
> Hi, sorry for bothering again all, I just want to
> know what Bf and Bg parameter stands for.
> Also, is there a way on how to find them? May I use the one in the
> parameter folder (cado-nfs/parameters/polynomial/) given in CADO-NFS?
> 
> Thank you

the Bf, Bg, area parameters are used to compute the Murphy-E score.
See the 2nd formula on page 2038 of "ON POLYNOMIAL SELECTION FOR THE GENERAL
NUMBER FIELD SIEVE" by Thorsten Kleinjung (Math. Comp. 2006).

Paul Zimmermann


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