From: Raul M. <mo...@ma...> - 2004-03-29 04:54:42
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On Mon, Mar 29, 2004 at 02:40:53PM +1000, Laird Breyer wrote: > crm114 says: > ------------ > Assume Plocal-spam(w) to mean that > > > Plocal-spam(w) = P({document d contains w}| document d is spam) Ok, well, I'm pretty sure that's backwards. Either that, or I don't understand the P(|) notation. > left. In words, Plocal-spam(w) means "if a document is spam, then > what's its probability of containing w?". That may be what the documentation says, but examination of the associated formula shows that Plocal-spam(w) really means "if a document contains w, what is the probability that it is spam?" -- Raul |