Re: [Asrg] Fwd: Returned mail: see transcript for details

[Vernon Schryver <vjs@calcite.rhyolite.com>]

> From: "Alan DeKok" <aland@freeradius.org>

>   As an absolute number, false positive should be easy to define.  "I
> went through my 'spam' folder, and I decided that 3 messages should
> not have been put there."

True, but such absolute numbers in isolation are merely boring noise.
Whether the number is 3 or 1,000,000 (eg. recently from AOL), it is
meaningless without some clue about the number of other messages.


>   As a ratio or percentage, false positives are taken relative to the
> desired signal, not to the total data, or to the noise.  ...

> ...
>   The ratio of false positives = FP / MAIL
>   The ratio o false negatives  = FN / MAIL

So say you and I, but not everyone else.  There is no canon that
sanctifies any particular definition of a "spam ratio," at least
not yet.


Vernon Schryver    vjs@rhyolite.com
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