Contributions
He has made many contributions to the field of computational linguistics and information retrieval, authoring books, many research papers and 24 US patents.
From 1988 onwards, he developed the CLARIT system, one of the first large scale information indexing and extraction systems based on syntactic language analysis and ontology discovery. CLARIT has participated in the first Text REtrieval Conferences (TREC), in the multilingual CLEF (Cross Language Evaluation Forum), and in the Asian NTCIR] (NII Test Collection for IR Systems) Evaluations.
Evans was elected a Fellow of the American College of Medical Informatics in 2000.
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