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From: "Finan, Sean" <Sean.Finan@childrens.harvard.edu>
To: "dev@ctakes.apache.org" <dev@ctakes.apache.org>
Subject: RE: Help needed with document creation time/date
Thread-Topic: Help needed with document creation time/date
Thread-Index: AQHR3TT65I170pMbG0GVDCg3eVr8s6AWsAQw//+OCoCAAHaEIA==
Date: Wed, 13 Jul 2016 19:00:02 +0000
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archived-at: Wed, 13 Jul 2016 19:00:25 -0000

Basically, you just want to create a TimeMention.

Here is a short example:

      final String docText =3D jcas.getDocumentText();
      final Matcher dateMatcher =3D DATE_PATTERN.matcher( docText );
      if ( dateMatcher.matches() ) {
         final TimeMention docTime =3D new TimeMention( jcas );
         docTime.setBegin( dateMatcher.start( 1 ) );
         docTime.setEnd( dateMatcher.end( 2 ) );
         docTime.setId( 0 );
         docTime.addToIndexes();
      }

If you do want to use the org.cleartk.timeml.type.DocumentCreationTime clas=
s then you can do so.  For later fetching and use, with a TimeMention you'l=
l rely on the class type and id while on the DocumentCreationTime you can j=
ust use the class type. =20

Sean

-----Original Message-----
From: Abramowitsch, Peter [mailto:pabramowitsch@hearst.com]=20
Sent: Wednesday, July 13, 2016 2:47 PM
To: dev@ctakes.apache.org
Subject: Re: Help needed with document creation time/date

Thanks Sean.  Great advice.

I have a regexNER, but didn't go that route because it looked as if there w=
as an inbuilt mechanism waiting to be activated.
Say I know the time from some external source, is there a kosher way I can =
inject it into the CAS as a creation time property so that it can be retrie=
ved later by a client that knows only the serialized CAS?

Peter

On 7/13/16, 11:41 AM, "Finan, Sean" <Sean.Finan@childrens.harvard.edu>
wrote:

>Hi Peter,
>
>Our group has used two different approaches, depending upon the note type:
>1.  Use a custom AE that creates creation time based upon a regex. =20
>This works well for notes that have a header or footer with a known format=
.
>2.  Use the last normalized temporal expression.  For my test notes=20
>this worked more frequently than you would think (~90%), but I would=20
>not go this route unless you have thoroughly thought about what is in=20
>your notes and how you are going to use the document creation time.
>
>That is all that we've done with respect to getting the creation time=20
>from the actual text.  If you have any kind of structured data tied to=20
>the note that indicates date, then you can tie things (e.g. doctimerel,
>doctime) together post-process.  We are doing this in one project.
>
>Sean
>
>-----Original Message-----
>From: Abramowitsch, Peter [mailto:pabramowitsch@hearst.com]
>Sent: Wednesday, July 13, 2016 2:33 PM
>To: dev@ctakes.apache.org
>Subject: Help needed with document creation time/date
>
>Hello All
>
>How can I get Ctakes to deduce the document creation datetime from the=20
>text.  I have a pipeline including the following engines Basic Token=20
>Processing FastUMLS
>
>Zoner
>
>ClearNLPDependencyParserAE
>
>PolarityCleartkAnalysisEngine
>
>UncertaintyCleartkAnalysisEngine
>
>HistoryCleartkAnalysisEngine
>
>ConditionalCleartkAnalysisEngine
>
>GenericCleartkAnalysisEngine
>
>SubjectCleartkAnalysisEngine
>
>EventAnnotator
>
>AnalysisEngineFactory.createEngineDescription(CopyPropertiesToTemporalE
>ven
>tAnnotator.class)
>
>DocTimeRelAnnotator
>
>BackwardsTimeAnnotator
>
>EventTimeRelationAnnotator
>
>EventEventRelationAnnotator
>
>
>I see that there is a DocumentCreationTime type, but it seems to be=20
>initialized from inside one of the ClearTKAnnotators.
>
>I cannot find any documentation and don't know if it is looking for=20
>particular manifestations in the text or whether a property needs to be=20
>set externally on the JCAS or one of the SOFAs.
>
>
>Any help out there? Examples?
>
>
>Many thanks,
>
>Peter