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Table 5 Summary of conventionally used annotation properties considered in this experiment

From: Improved characterisation of clinical text through ontology-based vocabulary expansion

Annotation Property

Identifier

Definition

label

rdfs:label

“a human-readable version of a resource’s name [40].”

altLabel

skos:core#altLabel

“An alternative lexical label for a resource [41].”

has_exact_synonym

hasExactSynonym

“An alias in which the alias exhibits true synonymy [42].”

has_narrow_synonym

hasNarrowSynonym

“An alias in which the alias is narrower than the primary class name. Example: pyrimidine-dimer repair

  

by photolyase is a narrow synonym of photoreactive repair [42].”

has_broad_synonym

hasBroadSynonym

“An alias in which the alias is broader than the primary class name. Example: cell division is a broad

  

synonym of cytokinesis [42].”

alternative term

IAO_0000118

“An alternative name for a class or property which means the same thing as the preferred name

  

(semantically equivalent) [4].”

  1. Definitions come from the description of the annotation properties in their respective top-level ontologies.