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3/12/91 Mar. 12, 1991 12/3/91
My PGP key is 324a3df234cb23e
Often have embedded spaces
Older IR systems may not index numbers
But often very useful: think about things like looking up error codes/stacktraces on the web
(One answer is using n-grams: Lecture 3)
Will often index “meta-data” separately
Creation date, format, etc.
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