Evaluation of Co-occurring Terms in Clinical Documents Using Latent Semantic Indexing.
- Author:
Choonghyun HAN
1
;
Sooyoung YOO
;
Jinwook CHOI
Author Information
- Publication Type:Original Article
- Keywords: Information Storage and Retrieval; Cluster Analysis; Documentation
- MeSH: Abstracting and Indexing as Topic; Cluster Analysis; Information Storage and Retrieval; Periodicals; Semantics
- From:Healthcare Informatics Research 2011;17(1):24-28
- CountryRepublic of Korea
- Language:English
- Abstract: OBJECTIVES: Measurement of similarities between documents is typically influenced by the sparseness of the term-document matrix employed. Latent semantic indexing (LSI) may improve the results of this type of analysis. METHODS: In this study, LSI was utilized in an attempt to reduce the term vector space of clinical documents and newspaper editorials. RESULTS: After applying LSI, document similarities were revealed more clearly in clinical documents than editorials. Clinical documents which can be characterized with co-occurring medical terms, various expressions for the same concepts, abbreviations, and typographical errors showed increased improvement with regards to a correlation between co-occurring terms and document similarities. CONCLUSIONS: Our results showed that LSI can be used effectively to measure similarities in clinical documents. In addition, correlation between the co-occurrence of terms and similarities realized in this study is an important positive feature associated with LSI.
