Re: Crm114-general Digest, Vol 33, Issue 12

thanks!

the thing is, i am not filtering spam; i'm doing a topic classifier (with 29
categories) as a research project, so there is a lot of academic curiosity
as to what features - and what tokens - are in there.

it would be nice to have two things: first, a utility that would output the
features and tokens from a .cfc-file without getting a vasectomy.
second, a variable that contained the unique features that a particular
sample generated (perhaps these could be included in the :stats:-variable).

i wonder if is this something that bill has considered, or if  it is
completely undoable.


On Thu, Feb 19, 2009 at 1:10 PM, <
crm114-general-request-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org> wrote:

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> Message: 1
> Date: Thu, 19 Feb 2009 10:35:07 +0100
> From: Thomas Michael Hagen <[email protected]>
> Subject: [Crm114-general] features/tokens
> To: [email protected]
> Message-ID:
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> is there any way to see the features and/or tokens that are stored in the
> .cfc-files?
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> Message: 2
> Date: Thu, 19 Feb 2009 03:53:44 -0700
> From: Chris Babcock <[email protected]>
> Subject: Re: [Crm114-general] features/tokens
> To: [email protected]
> Message-ID: <20090219035344.6543eba2-x3ndN0vv3IvkNpYEs466oNBPR1lH4CV8@public.gmane.org>
> Content-Type: text/plain; charset="us-ascii"
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> On Thu, 19 Feb 2009 10:35:07 +0100
> Thomas Michael Hagen <[email protected]> wrote:
>
> > is there any way to see the features and/or tokens that are stored in
> > the .cfc-files?
>
> IIRC, features are stored as hashes. Non-cryptographic, but slightly
> less reversible than a vasectomy.
>
> Not that this is something that you really want to do for any business
> purpose. It might be of some academic curiousity, but you won't be
> manually tuning CRM classifiers. The good news is that it's too much
> trouble for Mallory to reverse out features too. Since it's not really
> practical for someone to get a list of white list and black list words,
> you don't have to worry too much about specially crafted Spam targeted
> for your filters, as happens with manually maintained regexps.
>
> Chris
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