Related Experiment Videos
Combining lexical and semantic methods of inter-terminology mapping using the UMLS
Kin Wah Fung1, Olivier Bodenreider, Alan R Aronson
1National Library of Medicine, Bethesda, Maryland 20894, USA. kwfung@nlm.nih.gov
Studies in Health Technology and Informatics
|October 4, 2007
Summary
Mapping biomedical terms from SNOMED CT to ICD9CM is crucial for data reuse. Combining semantic and lexical mapping methods significantly improved accuracy and coverage for this inter-terminology task.
Area of Science:
- Biomedical Informatics
- Medical Terminology Management
- Health Data Interoperability
Background:
- Increasing volumes of electronic health data necessitate effective methods for re-using information.
- Inter-terminology mapping is essential for integrating diverse biomedical datasets.
Purpose of the Study:
- To develop and evaluate methods for mapping terms from SNOMED CT to ICD9CM.
- To compare the performance of semantic and lexical mapping approaches.
- To create a combined mapping strategy for enhanced accuracy.
Main Methods:
- Utilized the Unified Medical Language System (UMLS) as a knowledge base.
- Generated semantically-based and lexically-based mappings from SNOMED CT to ICD9CM.
- Compared mapping results against a gold standard dataset.
- Developed a combined mapping method based on sub-category precision.
Main Results:
- Semantic mapping demonstrated superior performance over lexical mapping in coverage, recall, and precision.
- The combined mapping method achieved 91% coverage, 43% recall, and 27% precision.
- The combined approach outperformed individual semantic and lexical methods.
Conclusions:
- Combining semantic and lexical mapping strategies offers a robust approach for inter-terminology mapping.
- The developed method can be customized to optimize performance for specific tasks.
- Effective terminology mapping enhances the utility and re-usability of biomedical data.
Related Concept Videos
01:20Anatomical Terminology
Knowledge of anatomy is essential to understand human biology and medicine. Anatomists and health care professionals use standard terminology to describe the human body with more precision and no ambiguity. Anatomical terms have mostly Greek and Latin-derived roots. Because these languages are rarely used in conversation, the meaning of words remains the same. Each term is made up of a root in between the prefixes and suffixes. The root of a term often refers to an organ, tissue, or condition,...
01:44Termination of Translation
The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the site where the peptide bond is formed - and a large, internal, water-filled tube through which the nascent polypeptide moves. This latter structure is called the Peptide Exit Tunnel, and it begins at the PTC and spans the body of the large ribosomal subunit. During translation, as the nascent polypeptide chain is synthesized, it passes through...
01:21Tandem Mass Spectrometry
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
02:05Degree of Unsaturation
The degree of unsaturation (U), or index of hydrogen deficiency (IHD), is defined as the difference in the number of pairs of hydrogen atoms between the compound and the acyclic alkane with the same number of carbon atoms. Each double bond or ring costs two hydrogen atoms compared to a saturated analog and results in one degree of unsaturation.
The degree of unsaturation for hydrocarbons is U = (2C + 2 − H) / 2, where C is the number of carbon atoms and H is the number of hydrogen atoms.
For...
The degree of unsaturation for hydrocarbons is U = (2C + 2 − H) / 2, where C is the number of carbon atoms and H is the number of hydrogen atoms.
For...
01:23Mnemonic Devices
Mnemonic devices are cognitive tools that facilitate memory retention by linking new information to familiar patterns or organizational strategies. These techniques are beneficial for remembering complex or lengthy sets of information by simplifying and structuring them in easily retrievable ways.
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...