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Showing 1 to 16 of 16 for “"UMLS."”.
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Enriching and designing metaschemas for the UMLS semantic network
… difficult. The Unified Medical Language System (UMLS) of the National Library of Medicine (NLM) is an attempt to integrate different medical terminologies into a unified representation framework to improve decision making and the quality of patient care as well as research in the health-care …
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Abstraction, extension and structural auditing with the UMLS semantic network
The Unified Medical Language System (UMLS) is a two-level biomedical terminological knowledge base, consisting of the Metathesaurus (META) and the Semantic Network (SN), which is an upper-level ontology of broad categories called semantic types (STs). The two levels are related via assignments of …
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TagMeds : a tool for populating eXtensible Markup Language documents with UMLS concept unique identifiers of current medications
… their dose, form of administration, etc. The UMLS is used as the underlying database of terms, and detected medications are encoded into XML tags consistent with and making use of the Health Level 7 (HL7) Clinical Document Architecture. The specific aims of this research are: (1) to review the …
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Large scale disease prediction
… tagged with Unified Medical Language System (UMLS) concepts [7]. Using the UMLS tags, datasets related to several phenotypes were obtained and gene selection was performed on the expression values of this tagged microarray data. Using the tagged datasets and the list of genes selected in the …
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An enhanced concept based approach medical information retrieval to address readability, vocabulary and presentation issues
… Eight benched marked datasets namely: Medline, UMLS, MeSH, Metamap, Metathesaurus, Diagnosia 7, Khresmoi Project 6 and Genetic Home Reference were used in validating the systems performance. Additionally, the ECBA was compared using three existing approaches such as concept based approach (CBA), …
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Using structural and semantic methodologies to enhance biomedical terminologies
… Network of the Unified Medical Language System (UMLS), which serves as a vocabulary knowledge base for biomedical research in various applications. Research techniques are presented on how to automatically identify and prevent erroneous semantic type assignments to concepts. The Web-based …
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Structural auditing methodologies for controlled terminologies
… META and SN, two major knowledge sources of the UMLS. In general, a correspondence between them is expected since the SN hierarchical relationships should abstract the META hierarchical relationships. It may indicate an error when a mismatch occurs. The UMLS SN has 135 categories called semantic …
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A Relevance Feedback-Based System For Quickly Narrowing Biomedical Literature Search Result
… of using relevance feedback, fuzzy logic and UMLS in the search process. Moreover, the fuzzy-based ranking method is evaluated in term of ranking the biomedical search result. Experiments show that the fuzzy-based ranking method improves the average ranking order accuracy by 3.35% and 29.55% …
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A system for automated lexical mapping
… databases to standard vocabularies such as UMLS (Unified Medical Language System) and SNOMED (the Systematized Nomenclature of Medicine). This automated lexical mapping was evaluated using a real-world database of consultation letters from Children's Hospital Boston. The first phase involved …
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Natural Language Processing Methods to Automatically Parse Eligibility Criteria in Dietary Supplements Clinical Trials
… of the gold standard annotated entities to UMLS semantic types to align with annotations from each system. All systems in NLP-ADAPT used their default pipelines to extract entities based on our custom mappings. The systems performed reasonably well in extracting UMLS concepts belonging to …
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Application and Evaluation of Unified Medical Language System Resources to Facilitate Patient Information Acquisition through Enhanced Vocabulary Coverage
… release of the Unified Medical Language System (UMLS). Two lexical matching techniques for identifying SNOMED concepts contained in free-text were evaluated, 1) lexical matching using SNOMED version 3.3 terms alone and 2) Metathesaurus-enhanced lexical matching. Metathesaurus-enhanced lexical …
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Ontology learning for the semantic deep web
… ontologies, such as WordNet, OpenCyc and the UMLS. Subsequently the domain ontologies developed in this research were evaluated from the naturalness perspective.
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A medication extraction framework for electronic health records
… med that identifies medications using the UMLS dictionary. We enhance medNERRgreedy med with information from topic models and additional corpus-derived heuristics, and show that the final medication extraction system outperforms the baseline and improves on state-of-the-art systems. For …
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Human concept cognition and semantic relations in the unified medical language system: A coherence analysis.
… from the unified medical language system, UMLS). Guided by these cognitive theories and based on related and appropriate data-analytic tools, such as nonmetric multidimensional scaling, hierarchical clustering, and content analysis, this study aimed to conduct an exploratory investigation …
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Metodología NeOn aplicada a la representación del contexto
… DILIGENT [Pinto et al., 2004]; y en el proyecto UMLS8 se transformó la red semántica “UMLS Semantic Network” en una ontología escrita en OWL9. Por tanto, como se puede observar, los desarrolladores de ontologías, con el objetivo de acelerar el proceso de desarrollo ontológico, están empezando a …
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Structural indicators for effective quality assurance of snomed ct
… pairs of SCT concepts that map to the same UMLS concept.