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Understanding Open Annotation Model: Structure and Characteristics

The Open Annotation Model provides a framework for creating and managing annotations across various media types. An annotation consists of a body and a target, with the body representing what is being annotated and the target indicating the relevant resource. Annotations can be created by humans or automated agents, and can occur at specific points in time. They often focus on segments of resources and include different definitions for media types such as text, images, audio, and video. By utilizing this model, users can effectively interpret and utilize annotations in digital content.

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Understanding Open Annotation Model: Structure and Characteristics

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  1. Open Annotation Model http://www.w3.org/community/openannotation/

  2. OA Model • Basic model: • Annotation • Body • Target • Implicit annotates relationship between Body and Target (i.e. Body is ‘about’ the Target) • Body and target of an annotation can be of any media type.

  3. Additional Properties • Typical annotation characteristics: • Annotation created by an author (human, software agent) • Annotation occurred at a particular point in time Body and Target may have different authors

  4. Segments of Resources • Most annotations are about part of a resource • Different segments for different media types: • Text: paragraph, arbitrary span of words • Image: rectangle or polygon • Audio: start and end times • Video: area and times

  5. Example Annotation Print: Using OAC:

  6. Example RDF <http://openannotation.metadata.net/lorestore/oac/0F36EA7771FDDCCF> dc:language "en" ; dc:title "Go thou and do likewise" ; dcterms:created "2012-03-22T13:32:29.084+10:00"^^dcterms:W3CDTF; oac:hasBody <urn:uuid:F5370815-2736-4736-A0AA-732F20FCAFEA> ; a <http://www.openannotation.org/ns/Annotation> ; a <http://openannotation.metadata.net/ns/lit-annotation-ns#ExplanatoryNote> ; oac:hasTarget <http://openannotation.metadata.net/index.php?option=com_mvd&view =MVDSingle&name=furphy&version1=2#xpointer(string-range(id("id1165964500664"), "", 431, 26))> dcterms:creator <http://openannotation.metadata.net/lorestore/users/test> . <urn:uuid:F5370815-2736-4736-A0AA-732F20FCAFEA> a <http://www.w3.org/2011/content#ContentAsText> ; cnt:characterEncoding "UTF-8" ; cnt:chars "Cf. 'Go and do thou likewise' (Luke 10:37), but in the context of procreation, perhaps a faint echo of ‚ ‘Be fruitful, and multiply, and replenish the earth (Genesis 1:28)" . <http://openannotation.metadata.net/index.php?option=com_mvd&view=MVDSingle&name =furphy&version1=2#xpointer(string-range(id("id1165964500664"), "", 431, 26))> dcterms:isPartOf <http://openannotation.metadata.net/index.php?option=com_mvd&view=MVDSingle&name =furphy&version1=2> . <http://openannotation.metadata.net/lorestore/users/test> a <http://xmlns.com/foaf/0.1/Agent> ; foaf:name "Roger Osborne" .

  7. Collaboration & discussion

  8. Example RDF @prefix oa: <http://www.openannotation.org/ns/> . @prefix oax: <http://www.openannotation.org/ns/> . @prefix cnt: <http://www.w3.org/2011/content#> . @prefix ex: <http://www.example.org/#> . ex:anno1 oax:hasSemanticTag <http://itee.uq.edu.au/eresearch/3dsa_ontology#kalathros> . ex:anno1 oax:hasSemanticTag <http://itee.uq.edu.au/eresearch/3dsa_ontology#vase> . ex:anno1 oa:hasTarget <http://itee.uq.edu.au/eresearch/3dsa/vase1> . ex:anno1 oa:hasBody <urn:uuid:074360F6-19F9-49A0-83BF-A07FEEF09D5E> . <urn:uuid:074360F6-19F9-49A0-83BF-A07FEEF09D5E> a cnt:ContentAsText; cnt:characterEncoding "UTF-8" ; cnt:chars "The woman holds a lidded bowl over a kalathros (wool basket)" .

  9. LORE lore • Firefox add-on • create, edit, search, browse annotations and resource maps github.com/auselit/lore/

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