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The dictionaries and models used during annotation indeed are the cornerstone of quality for your results. Use the instructions below to facilitate changing the default dictionaries and models. Why? cTAKES includes a simple, very limited dictionary to make functions work since annotation is dependent upon having at least one dictionary. cTAKES does not distribute the UMLS dictionaries (like SNOMED-CT and RxNorm). The models made available by cTAKES have been trained on a specific set of text data (a corpus) which may not match well with your text.

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