An ontology

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An ontology

• is a semantic structure that formalizes the
  knowledge that members of a community have about
  a given domain.
• consists of concepts and relations among those
  concepts.

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Concepts and words

• In an ontology, concepts are talked about and
  referred to using words.
• Concept
• Lexicalizations, within and across languages
• Synonyms fishing vessel, fishing boat,
  fishing craft
• Translations fishing boat bateau de pêche
  ????

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Concepts and properties

• Concepts have attributes and participate in
  relations with other concepts.

Relation
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What can an ontology do for multilingual resource
discovery?
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An ontology can also be used
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to find multilingual resources in a
bibliographical database.
ENGLISH
SPANISH
FRENCH
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In addition, it can identify hierarchically
related concepts
hierarchically related concept
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... to search for resources...
hierarchically related concept
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...as well as non-hierarchically related concepts
non-hierarchically related concept
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... to search for resources...
non-hierarchically related concept
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An ontology can also be used to query multiple
databases.
vessels and craft
navire de pêche, fishing vessel,
embarcaciones de pesca
fishing vessels
fishing vessels
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Results from multiple database querying
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An ontology can help the user refine their query.
Original query bateau de pêche To refine your
query, click on the concepts you are interested
in. They will appear to the left.
Search