Re: Learning/relearning twice; effect on database

[email protected] said:
> - What happens if I categorise the same mailbox as category C twice?
>   Does ifile notice that it's seen the messages before?  If not, what
>   effect will this have on matching in future? 

I can't say anything about the procmail scripts, but my educated guess is 
that they just act as a wrapper for the ifile core executable.  If so, 
ifile  won't notice that you've fed it the same message twice.  Nothing 
terrible will happen---the words in that message will be weighted 
slightly more heavily.  For a folder with very few e-mails, this could 
have a significant effect, but for a larger folder, the effect will be 
hardly noticeable.

[email protected] said:
> - (related)  What happens if I 'relearn' a message from one category to
>   another twice - i.e., delete a message twice from one category and
>   learn it twice into another? 

For the words in that message, there will be an extra negative weighting
in the "delete from" folder and an extra positive weighting in the "add
to" folder.  You probably won't see a strong effect, but I wouldn't
recommend doing this on purpose.

[email protected] said:
> Just want to know whether or not I have to keep a track of which
> messages I recategorise in this way.

Not exactly sure what you mean.  Probably best to view ifile as attached
to a folder hierarchy.  Each --insert (or --query-insert) should
correspond to a message being added to a folder.  Each --insert --delete
should correspond to a message being moved from one folder to another.

Jason D. M. Rennie
MIT AI Lab
[email protected]
(617) 253-5339
http://www.ai.mit.edu/~jrennie/



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