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Eugene Leitl:
>Users don't like entering passphrases when sending email.
If you're using the mail client on your personal
machine, there's no reason you would need to enter
a passphrase, unless that is part of how you secure
the data on your personal machine. You're private
key is as secure as any other data on your machine.
If you're working remotely, you already have to
enter a passphrase to get to your email.
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> How were these msgs broken up into the 5 sets?  Set4 in particular is giving
> the other sets severe problems, and Set5 blows the f-n rate on everything
> it's predicting -- when the rates across runs within a training set vary by
> as much as a factor of 25, it suggests there was systematic bias in the way
> the sets were chosen.  For example, perhaps they were broken into sets by
> arrival time.  If that's what you did, you should go back and break them
> into sets randomly instead.  If you did partition them randomly, the wild
> variance across runs is mondo mysterious.
They weren't partitioned in any particular scheme - I think I'll write a
reshuffler and move them all around, just in case (fwiw, I'm using MH
style folders with numbered files - means you can just use MH tools to
manipulate the sets.)
> For whatever reason, there appear to be few of those in BruceG's spam
> collection.  I added code to strip uuencoded sections, and pump out uuencode
> summary tokens instead.  I'll check it in.  It didn't make a significant
> difference on my usual test run (a single spam in my Set4 is now judged as
> ham by the other 4 sets; nothing else changed).  It does shrink the database
> size here by a few percent.  Let us know whether it helps you!
I'll give it a go.
--
Anthony Baxter     <anthony@interlink.com.au>
It's never too late to have a happy childhood.