[spambayes-dev] empty urls in bigram?

Skip Montanaro skip at pobox.com
Wed Dec 17 17:59:45 EST 2003

I just noticed this bigram in my clues: 'bi:url: url:'.  If 'url:' would
only be presented once as a clue, does it make sense to form a bigram with
two instances of it?  What does an empty "url:" token mean?


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