glouis at dynamicro.on.ca
Wed Mar 24 07:17:33 EST 2004
> >>spam_cutoff=0.069 # for 0.05% fpos (1); expect 0.00% fneg (0).
> >>#spam_cutoff=0.040 # for 0.10% fpos (2); expect 0.00% fneg (0).
> >>#spam_cutoff=0.020 # for 0.20% fpos (4); expect 0.00% fneg (0).
> >So why does bogotune suggest those values? Zero false
> >positives were easily possible with a higher ham_cutoff.
Bogotune can't look for zero false positives; it has to look for at
least one. If you have 10,000 messages or more, it will try to find a
0.01% value. If not, it does the best it can with what you give it.
Obviously one can (and I usually do) just use the recommendation as a
starting point from which to set a comfortable balance between fp and
You can't influence false positives with the ham cutoff; it sets the
boundary between nonspam and unsure. A false positive is a nonspam
that scores above the spam cutoff.
| G r e g L o u i s | gpg public key: 0x400B1AA86D9E3E64 |
| http://www.bgl.nu/~glouis | (on my website or any keyserver) |
| http://wecanstopspam.org in signatures helps fight junk email. |
More information about the Bogofilter