A word of caution -- the definition of a causal relation in the clinical narrative is much vaguer than in the general domain. Even if the clinical narrative asserts a relation between a medication and a sign/symptom (a.k.a. adverse event), it might not be necessarily the case. Even more, the lack of an asserted explicit causal relation does not mean that such is lacking. Regards, --Guergana
Guergana Savova, PhD, FACMI Associate Professor PI Natural Language Processing Lab Boston Children's Hospital and Harvard Medical School 300 Longwood Avenue Mailstop: BCH3092 Enders 144.1 Boston, MA 02115 Tel: (617) 919-2972 Fax: (617) 730-0817 guergana.sav...@childrens.harvard.edu Harvard Scholar: http://scholar.harvard.edu/guergana_k_savova/biocv -----Original Message----- From: Abramowitsch, Peter [mailto:pabramowit...@hearst.com] Sent: Monday, February 20, 2017 1:19 PM To: dev@ctakes.apache.org Subject: Re: Ctakes relation extraction There is another, more generic NLP engine, StanfordCoreNLP which does have more advanced CORel annotation capabilities, but it is not specifically tuned to clinical concepts and relationships. So for instance, causal relationships might be detected if expressed in standard english, but certainly not by clinical acronyms. But you might play with it just to get a sense of what is possible in the open source space. Regards, Peter On 2/19/17, 11:31 PM, "Oleg Bogatiryov" <oleg.bogatir...@ctco.lv> wrote: >Hello to everyone. > > > >I am pleased to join the group. > > > >I am trying to extract relation from the document. > >Ideally I'd like to get the graph or tree of dependencies/relations >from the clinical documents. > > > >Could you please let me know how can I achieve it ? > > > >I am able to run CVD and RelationExtractorAggregate analysis engine but >there is no useful information > >in results that can be used in order to build a relation graph. > > > >Thanks in advance, > >Oleg. >
