ctakes: demo clinical text analysis and knowledge extraction system
DESCRIPTION
cTAKES: Demo Clinical Text Analysis and Knowledge Extraction System. James Masanz Mayo Clinic. UIMA CAS Visual Debugger (CVD). Provided by / part of UIMA Run a pipeline against free text With appropriate 1 st annotator, against XML such as CDA document - PowerPoint PPT PresentationTRANSCRIPT
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cTAKES: Demo
Clinical Text Analysis and Knowledge Extraction System
James Masanz
Mayo Clinic
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UIMA CAS Visual Debugger (CVD)
Provided by / part of UIMA Run a pipeline against free text With appropriate 1st annotator, against
XML such as CDA document View annotations created (“debugger”)
Export annotations to XML (XCAS or XMI)
![Page 3: cTAKES: Demo Clinical Text Analysis and Knowledge Extraction System](https://reader035.vdocuments.net/reader035/viewer/2022081511/56813a28550346895da20d35/html5/thumbnails/3.jpg)
cTAKES: Components
• Sentence boundary detection (OpenNLP technology)
• Tokenization (rule-based)
• Morphologic normalization (NLM’s LVG)
• POS tagging (OpenNLP technology)
• Shallow parsing (OpenNLP technology)
• Named Entity Recognition
• Negation and context identification (NegEx)
• Dependency parser
• Drug Profile module
• Smoking status classifier
• CEM normalization module
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Extend Earlier Example
Tamoxifen 20 mg po daily started on March 1, 2005 for 6 mo.
Aspirin prn.
Fx history of breast cancer. History of migraines.
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Sentences
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Tokens
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Chunks
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Windows for Lookup
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Named Entity
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Questions?
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Live Demo of CVD