Morten W. Petersen writes:
> Is there anyone who could try to give an estimate of how long it would
> take to add fuzzy logic (regexp-like) searching capability to the
> ZCatalog?
I do not think that "fuzzy logic" is strongly related to "regexp-like".
Anyway.
Fuzzy searching often means "finding matches with characters omitted,
replaced or inserted".
Zope's globbing vocabularies support wildcards '*' and '?'.
To implement wildcard based searches efficiently, they
index words under their two letter consitutents.
When you now get a pattern, you derive from the pattern
what two letter constituents the matching words must
have and retrieve them. This defines a candidate word set.
Then you check, whether the retrieved word really match
the expression.
You can extend this algorithm to get fuzzy searches.
Dieter
_______________________________________________
Zope-Dev maillist - [EMAIL PROTECTED]
http://lists.zope.org/mailman/listinfo/zope-dev
** No cross posts or HTML encoding! **
(Related lists -
http://lists.zope.org/mailman/listinfo/zope-announce
http://lists.zope.org/mailman/listinfo/zope )
