Chris J. Lu

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A JDI (Journal Descriptor Indexing) tool has been developed at NLM that automatically categorizes biomedical text as input, returning a ranked list, with scores between 0-1, of either JDs (Journal Descriptors, corresponding to biomedical disciplines) or STs (UMLS Semantic Types). Possible applications include WSD (Word Sense Disambiguation) and retrieval(More)
The SPECIALIST Lexicon has been distributed annually by the National Library of Medicine (NLM) since 1994. Lexical records are used for Part-of-Speech (POS) tagging, indexing, information retrieval, concept mapping, etc. in many Natural Language Processing (NLP) projects, such as Lexical Tools, MetaMap, SemRep, UMLS Metathesaurus, and ClinicalTrials.gov.(More)
It is always a challenge to present Web applications at a facility with no Internet connection. Traditional presentation methods such as transparencies or slides are inadequate for demonstrating dynamic Web applications. Currently, virtual-live demonstrations of Web applications are created with static HTML (Hypertext Markup Language) files. However,(More)
A systematic approach for automatically generating derivational variants based on the SPECIALIST Lexicon was proposed and implemented in Lexical Tools [1]. This approach addressed the prefix (PD), zero (ZD), and suffix (SD) derivations from nominalizations (nomD). This paper describes the generation of SD (not from nomD) based on the Lexicon in the Lexical(More)
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