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. 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 this worked more frequently than you would think (~90%), but I would not go this route unless you have thoroughly thought about what is in 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 from the actual text. If you have any kind of structured data tied to 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:pabramowit...@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 text. I have a pipeline including the following engines Basic Token Processing FastUMLS Zoner ClearNLPDependencyParserAE PolarityCleartkAnalysisEngine UncertaintyCleartkAnalysisEngine HistoryCleartkAnalysisEngine ConditionalCleartkAnalysisEngine GenericCleartkAnalysisEngine SubjectCleartkAnalysisEngine EventAnnotator AnalysisEngineFactory.createEngineDescription(CopyPropertiesToTemporalEventAnnotator.class) DocTimeRelAnnotator BackwardsTimeAnnotator EventTimeRelationAnnotator EventEventRelationAnnotator I see that there is a DocumentCreationTime type, but it seems to be initialized from inside one of the ClearTKAnnotators. I cannot find any documentation and don't know if it is looking for particular manifestations in the text or whether a property needs to be set externally on the JCAS or one of the SOFAs. Any help out there? Examples? Many thanks, Peter
