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From Peter Klügl (JIRA) <...@uima.apache.org>
Subject [jira] [Created] (UIMA-2757) TextMarker: Add wildcard rule element
Date Wed, 20 Mar 2013 09:33:14 GMT
Peter Klügl created UIMA-2757:
---------------------------------

             Summary: TextMarker: Add wildcard rule element
                 Key: UIMA-2757
                 URL: https://issues.apache.org/jira/browse/UIMA-2757
             Project: UIMA
          Issue Type: Bug
          Components: TextMarker
            Reporter: Peter Klügl
            Assignee: Peter Klügl


Right now, something like a wildcard or an I-don't-care rule element can be implemented with
ANY*?. However, those rule elements actually investigate each token until the next rule element
is successfully matched, meaning they are slow if there is some space in between.

A real wildcard, which just skips everything, would really be useful (and faster). This can
be implemented by not iterating over the visible inference annotations, but actually finding
a matchable position in the index and then check whether it is visible. Since the next rule
element can possibly quite complex, it is maybe better to just match to the next annotation,
and if that one is invisible, then return a failed match. This behavior needs actually some
careful testing in different use cases.

First suggestion for the syntax (** for wild card):

CW **{-> MARK(Type)} PERIOD; 

The "**" is maybe not the best solution since it looks quite like a quantifier *?. Introducting
an actual keyword can also be problematic since they might be a type with the same name. Maybe
something like

CW #{-> MARK(Type)} PERIOD; 

is better.

This rule would create an annotation from the end of each capitalized word to the begin of
the next period, including the white spaces. However, those can be removed with the TRIM action.




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