Hello,
you need to collect the annotations that you want to remove in some list while
you iterate over the annotation index. Once you are done iterating, you start
iterating over that list to remove the annotations. You cannot add/remove
annotations while you iterate over the annotation index, otherwise you get the
ConcurrentModificationException.
Cheers,
Richard
Am 03.06.2011 um 12:55 schrieb Rashad:
> Hi,
>
> I'm reasonably new to UIMA and trying to get it to do what I want. I'm
> attempting to perform entity extraction on 3 languages. I have an IF
> statement
> at the start of each Analysis engine which skips if the language of the
> document is not English for example - another AE detects the language to
> begin
> with.
>
> the next AE then tokenises this document (space tokeniser), next AE then
> extracts entities and CAS consumer then writes this to disk.
>
> However I don't want to write ALL the space tokenised annotations to the disk
> aswell - only the extracted entities, as the files gets very large very
> quickly! Once a token has been processed I want it to be removed from the CAS/
> jCAS, but token.removeFromIndexes() (I'm using Java) just throws a concurrent
> modification exception.
>
> How do I get around this?
>
> This is my code:
>
> AnnotationIndex<Annotation> token = aJCas.getAnnotationIndex(Token.type);
> FSIterator<Annotation> timeIter = token.iterator();
> while (timeIter.hasNext()) {
> Token currentToken = (Token) timeIter.next();
> Token previousToken = null;
> if (englishNamesAsTrie.search(currentToken.getToken().toLowerCase())) {
> PersonName annotation = new PersonName(aJCas);
> annotation.setBegin(currentToken.getBegin());
> annotation.setEnd(currentToken.getEnd());
> annotation.addToIndexes(aJCas);
> currentToken.removeFromIndexes(aJCas)
> }
> }
> }
>
--
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Richard Eckart de Castilho
Technical Lead
Ubiquitous Knowledge Processing Lab
FB 20 Computer Science Department
Technische Universität Darmstadt
Hochschulstr. 10, D-64289 Darmstadt, Germany
phone [+49] (0)6151 16-7477, fax -5455, room S2/02/B117
[email protected]
www.ukp.tu-darmstadt.de
Web Research at TU Darmstadt (WeRC) www.werc.tu-darmstadt.de
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