Books@Baccon

A teacher librarian's learning journey

Taxonomies and ontologies September 4, 2013

Filed under: ETL505 Bibliographic Standards in Education — Jennifer Baccon @ 7:40 am
  • As structured thesauri, double as classification schemes
  • Online resources can be placed in a structure and made accessible without a notation scheme
  • Online resources diverse, more “granular” and current
  • Online resources benefit from logical arrangement – resultant schemes/structures termed taxonomies
  • Mirror organisation re. classification schemes re. similar concepts are grouped together – hierarchical/multilevelled
  • Difference to library classification scheme – independent from the resource itself so doesn’t need artificial notation to order
  • Taxonomies developed to navigate networked environments
  • Labels can be used in indexing and searching
  • End-users seen as of import – in other words, close attention is paid to user warrant – language and thinking about subject (knowledge domain)
  • Few achieve external “standards” and are works in progression
  • Sometimes polyhierachical (allowing for different ordering/repeats re. citation order
  • Addressing then scatter, multiple access but can be confusing
  • Parent-child or “class” relationship
  • Ontology is a knowledge structure conceived/labelled by people
  • Ontologies are more complex and express different types of relationships other than x is a kind of y. Could be x might produce y
  • More advanced retrieval systems use of ontologies known as topic maps
  • Topic maps specify the exact nature of the relationship between concepts
  • Increases precision thus information retrieval
  • Also more open-ended – more easily revised/edited
  • However more difficult to construct and use
  • Taxonomies to ontologies – continuum of vocabularies – from library thesauri and classification schemes to computer products
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