Difference between revisions of "Hyeju Jang et al IRI 2006"

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== Summary ==
 
== Summary ==
The paper presents a semantic tagger which extract "symptom", "therapy", and "performance" from free-text clinical records in order to help answering questions below.
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The [[Category::Paper]] presents a semantic tagger which extract "symptom", "therapy", and "performance" from free-text clinical records in order to help answering questions below.
  
 
1. How can X be used in the treatment of Y?
 
1. How can X be used in the treatment of Y?
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** Ex) 시행한 basal hormone level 에서, clinical 하게는 cushinoid feature 처럼 보이나  
 
** Ex) 시행한 basal hormone level 에서, clinical 하게는 cushinoid feature 처럼 보이나  
  
The approach of the system is Hidden Markov Model (HMM) using equivalence classes based on primitive tagging results such as UMLS and POS to solve serious data sparse problem.
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The approach of the system is [[UsesMethod::Hidden Markov Model]] (HMM) using equivalence classes based on primitive tagging results such as UMLS and POS to solve serious data sparse problem.
  
 
[[File:seta.png]]
 
[[File:seta.png]]

Revision as of 16:39, 9 October 2010

Citation

Hyeju Jang, Yun Jin, Sung Hyon Myaeng. 2006. Integration of Low Level Linguistic Information for Clinical Document Semantic Tagging. In Proceeding of IEEE Conference on Information Reuse and Integration, 292-297.

Online version

IEEE Xplore

Summary

The Paper presents a semantic tagger which extract "symptom", "therapy", and "performance" from free-text clinical records in order to help answering questions below.

1. How can X be used in the treatment of Y?

2. What are the performance characteristics of X in the setting of Y?

Texts were written by Korean doctors. The characteristics of the texts are

  • Specialized medical words
    • Ex) hypothyroidism , hypertensive
  • Abbreviations
    • Ex) ACA, MRI, CR
  • non-alphanumeric symbols
    • Ex)  , ↑
  • numeric data
    • Ex) 0.24/73.2 , 1-2회 , 12.1% , 02.12.16-03.1.2
  • Mixed Korean and English
    • English for the medical terminologies
  • Korean for some general nouns and most verbs
    • Ex) 시행한 basal hormone level 에서, clinical 하게는 cushinoid feature 처럼 보이나

The approach of the system is Hidden Markov Model (HMM) using equivalence classes based on primitive tagging results such as UMLS and POS to solve serious data sparse problem.

Seta.png

The evaluation was performed on 200 documents for training and 100 documents for test with 3 fold validation. The performance of the system is not high, approximately 70%. The author thinks this could be improved with reflecting various aspects of language.