Thanks Sean,
I was able to achieve what I wanted by adding the ContextAnnotator to the
default clinical pipeline like so:
public class Pipeline
{
public static AggregateBuilder getAggregateBuilder( ) throws Exception
{
AggregateBuilder builder = new AggregateBuilder( );
builder.add( ClinicalPipelineFactory.getDefaultPipeline( ) );
builder.add( ContextAnnotator.createAnnotatorDescription( ) );
return builder;
}
}
-Chris
On Tue, Aug 8, 2017 at 2:36 PM, Finan, Sean <
sean.fi...@childrens.harvard.edu> wrote:
> Hi Chris,
>
> No, you are not missing anything.
>
> The example on the wiki was concocted to display what ctakes should do.
> There are a few different negation modules (and you can write your own).
> Using the Assertion module you will not get negated lesions. Using the
> ContextAnnotator you will.
>
> I did the following:
>
> In ctakes-examples , edit org.apache.ctakes.examples.pipeline.
> HelloWorldPropsPiperRunner.java
> HelloWorldPropsPiperRunner uses the ContextAnnotator for negation.
> Change DOC_TEXT to be the example sentence. The output is:
>
> 4,11 patient
> | affirmed | certain | not conditional |
> not generic | Patient | history of: 0
> 24,26 CT
> | affirmed | certain | not conditional |
> not generic | Patient | history of: 0
> 27,31 Scan
> | affirmed | certain | not conditional |
> not generic | Patient | history of: 0
> 35,40 April
> | affirmed | certain | not conditional |
> not generic | Patient | history of: 0
> 47,50 did
> | negated | certain | not conditional |
> not generic | Patient | history of: 0
> 47,54 did not
> | affirmed | certain | not conditional |
> not generic | Patient | history of: 0
> 51,54 not
> | affirmed | certain | not conditional |
> not generic | Patient | history of: 0
> 62,69 lesions
> | negated | certain | not conditional |
> not generic | Patient | history of: 0
> 77,82 liver
> | negated | certain | not conditional |
> not generic | Patient | history of: 0
>
> Notice that the context annotator marked lesions as negated.
>
> I hope that makes sense.
> Sean
>
>
> From: Chris Hinkle [mailto:hin...@all-turtles.com]
> Sent: Tuesday, August 08, 2017 5:00 PM
> To: dev@ctakes.apache.org
> Subject: default clinical pipeline: questions about polarity [EXTERNAL]
>
> Hi cTAKES Team,
>
> I've recently started exploring cTAKES and I'm excited about the
> potential. However, I'm having trouble seeing the results as they're
> exemplified in the documentation using the example input "The patient
> underwent a CT Scan in April which did not reveal lesions in his liver."
>
> Specifically negation (polarity) values don't seem to be populated as they
> are shown in the Default Clinical Pipeline documentation wiki page<
> https://urldefense.proofpoint.com/v2/url?u=https-3A__cwiki.apache.org_
> confluence_display_CTAKES_Default-2BClinical-2BPipeline&
> d=DwMFaQ&c=qS4goWBT7poplM69zy_3xhKwEW14JZMSdioCoppxeFU&r=
> fs67GvlGZstTpyIisCYNYmQCP6r0bcpKGd4f7d4gTao&m=
> dTK9VzFknYGrOowQ4jIqy8xeqw9DIClZjRUaj_xs894&s=26Dy4rIl2LIwaRk5o3q8pmAhISj_
> lyCX90hVe2sAV58&e=>. I've built a simple java class which instantiates
> the Default Pipeline like so
>
>
> static AnalysisEngine pipeline;
>
> …
>
> log.info( "Initilizing Pipeline..." );
>
>
>
> try
>
> {
>
> AggregateBuilder builder = new AggregateBuilder( );
>
> builder.add( ClinicalPipelineFactory.getDefaultPipeline( ) );
>
> pipeline = builder.createAggregate( );
>
> }
>
> catch( Exception e )
>
> {
>
> log.error( e );
>
> }
>
> …
>
>
>
> I then instantiate a CAS and process it like so:
>
>
>
> try
>
> {
>
> JCas jcas = pipeline.newJCas( );
>
> jcas.setDocumentText( "The patient underwent a CT Scan in April which
> did not reveal lesions in his liver." );
>
> pipeline.process( jcas );
>
> }
>
> catch( Exception e )
>
> {
>
> log.error( e );
>
> }
>
> …
>
>
>
> I've set my UMLS username and password as environment variables, and UMLS
> lookups are working just fine. The CAS contains the same identified
> annotations as the example, i.e. The AnatomicalSiteMentions,
> SignSymptomMentions, etc, however, the fields for polarity are all 1. The
> documentation on the wiki page for Assertion Component Use Guide<
> https://urldefense.proofpoint.com/v2/url?u=https-3A__cwiki.apache.org_
> confluence_display_CTAKES_cTAKES-2B4.0-2B-2D-2BAssertion&d=DwMFaQ&c=
> qS4goWBT7poplM69zy_3xhKwEW14JZMSdioCoppxeFU&r=
> fs67GvlGZstTpyIisCYNYmQCP6r0bcpKGd4f7d4gTao&m=
> dTK9VzFknYGrOowQ4jIqy8xeqw9DIClZjRUaj_xs894&s=
> AdLHU8Zne1EOqbGocT4o22Ylyl32B-xRHMtogDho9r4&e=>, and the aforementioned
> wiki page for the default clinical pipeline lead me to think that the
> polarity field for the 'lesions' concept would be set to 1, and leave the
> rest -1.
>
>
>
> Is there something I'm missing? Perhaps I'm not looking in the right
> place, or haven't done all of the configuration required to exercise those
> features of cTAKES?
>
>
>
> I've attached the serialized CAS object to this email for reference.
>
>
>
>
>
>
>
> Best,
>
> Chris
>
>
> --
> Chris Hinkle
> All Turtles
> 347-407-4993
>
--
Chris Hinkle
All Turtles
347-407-4993
