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Summary

The names (primary labels) for elements (classes, properties, etc.) in an ontology must be intelligible to scientists and amenable to natural language processing. Each primary label SHOULD be unique among OBO Library ontologies, and MUST be unique within its own ontology.

Purpose

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Recommendations and Requirements

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Briefly, some important things to remember:

  • use rdfs:label for the primary label
  • include exactly one rdfs:label for every declared entity (e.g. class, property)
  • write labels, synonyms, etc as if writing in plain English text. ie use spaces to separate words, only capitalize proper names (e.g. Parkinson disease). Do not use CamelCase, do_not_use_underscores
  • avoid extra spaces between words, or at the beginning or end of the term label
  • spell out abbreviations. Abbreviations can be included as a separate property.
  • make the primary labels to be as unambiguous as possible. Remember, your ontology may be used in a different context than that for which it was originally intended. Remember also of course that the label should be unambiguous without looking at parent terms
  • labels MUST be unique within an ontology
  • use the IAO property ‘obo foundry unique label’ http://purl.obolibrary.org/obo/IAO_0000589 to declare a pan-OBO unique label if required

Implementation

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Examples

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Counter Examples

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Criteria for Review

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Feedback and Discussion