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Open Annotation Core Data Model (tutorial)

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Open Annotation Core Data Model (tutorial)

  1. 1. Open Annotation Data Model: Core Robert Sanderson azaroth42@gmail.com Los Alamos National Laboratory @azaroth42 Paolo Ciccarese paolo.ciccarese@gmail.com Harvard Medical School @paolociccarese (Community Group Co-Chairs) Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 1
  2. 2. What is Annotation? “ An Annotation is considered to be a set of connected resources, typically including a body and target, where the body is related to the target. ” Users Annotate To: …Provide an Aide-Memoire Highlighting, Bookmarking …Share and Inform Commenting, Describing …Improve Discovery Tagging, Linking …Organize Resources Classifying, Identifying …Interact with Others Questioning, Replying …Create as well as Consume Editing, Moderating Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 2
  3. 3. Open Annotation Data Model Follow along: http://www.openannotation.org/spec/core/ Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 3
  4. 4. Core Data Model Annotation: The conceptual linkage between body and target Body: The comment or resource which is “about” the Target Target: The resource which is being discussed Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 4
  5. 5. Core Data Model Annotation: Represents the relationship between Body and Target Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 5
  6. 6. Core Data Model Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 6
  7. 7. Core Data Model <x:MyAnno> a oa:Annotation ; oa:hasBody <http://www.youtube.com/watch?v=fgg2tpUVbXQ> ; oa:hasTarget <http://zebu.uoregon.edu/hudf/hudf_300dpi.jpg> . Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 7
  8. 8. Core Data Model: Types Useful to know the general type of the Body and Target. Useful to know the media type of the representation. Recommendation to use Dublin Core Types vocabulary. Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 8
  9. 9. Core Data Model: Types Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 9
  10. 10. Core Data Model: Types <x:MyAnno> a oa:Annotation ; oa:hasBody <http://www.youtube.com/…> ; oa:hasTarget <http://zebu.uoregon.edu/…> . <http://www.youtube.com/…> a dctypes:MovingImage ; dc:format “application/flv” . <http://zebu.uoregon.edu/…> a dctypes:Image ; dc:format “image/jpeg” . Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 10
  11. 11. Core Data Model: Embedded Bodies Many (existing and previous) systems embed textual bodies within the annotation document, as a literal string. However Bodies are not just textual! However string literals are easy and currently common! However literals aren’t part of the web architecture, and have no identity. You can’t associate arbitrary additional information with them! However you don’t really need to. Resources will mean no one implements the data model! However … Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 11
  12. 12. Core Data Model: Embedded Bodies Embed a text comment! Reference a video file! With a string literal! With a URI! Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 12
  13. 13. Core Data Model: Embedded Bodies Solution: W3C’s Content in RDF specification Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 13
  14. 14. Core Data Model: Embedded Bodies Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 14
  15. 15. Core Data Model: Tagging Tagging is the simplest form of Annotation Two forms: •  Plain Text Tags •  Tagging with a string, typically a single word •  Semantic Tags •  Tagging with URI that identifies a concept •  Tagging with a document, standing for a concept Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 15
  16. 16. Core Data Model: Tagging Plain Text tagging uses Content in RDF, and adds the oa:Tag class Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 16
  17. 17. Core Data Model: Tagging Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 17
  18. 18. Core Data Model: Tagging Semantic tagging uses the basic model, and adds the oa:SemanticTag class Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 18
  19. 19. Core Data Model: Tagging Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 19
  20. 20. Core Data Model: Tagging Common to use a document as a “semantic” tag This is not good practice, and the data model adds an intermediate node Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 20
  21. 21. Core Data Model: Tagging Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 21
  22. 22. Core Data Model: Fragment URIs Most non-tag Annotations are about segments of a resource Web Architecture uses URI Fragments to identify and describe segments Examples: •  http://www.example.com/index.html#para1 •  http://www.example.com/image.jpg#xywh=10,10,200,300 Good for simple segments, but not sufficient for all cases. Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 22
  23. 23. Core Data Model: Fragment URIs Fragment URIs use the basic model Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 23
  24. 24. Core Data Model: Fragment URIs Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 24
  25. 25. Core Data Model: Fragment URIs Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 25
  26. 26. Core Data Model: No Body Annotations may only have an implicit body Examples: •  Bookmarking •  Highlighting Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 26
  27. 27. Core Data Model: No Body Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 27
  28. 28. Core Data Model: Multiple Bodies & Targets Annotations may have multiple bodies and targets Each body applies individually to each target Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 28
  29. 29. Core Data Model: Multiple Bodies & Targets Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 29
  30. 30. Core Data Model: Provenance It is important to record the provenance of the Annotation •  Who was the person who created the annotation? •  Needed for spam, reputation models, etc. •  When did they do it? •  Needed for synchronization •  Who serialized the annotation to the document format? •  Useful for debugging, advertising •  When did they serialize it? •  Deduplication, debugging, synchronization Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 30
  31. 31. Core Data Model: Provenance Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 31
  32. 32. Core Data Model: Provenance Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 32
  33. 33. Core Data Model: Provenance Agents Useful to know additional information about the agents involved. Classes of Agent: Properties of Agents: •  Person •  Name •  Organization •  Email address •  Software •  Home page •  OpenID •  (other FOAF properties) Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 33
  34. 34. Core Data Model: Provenance Agents Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 34
  35. 35. Core Data Model: Provenance Agents Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 35
  36. 36. Core Data Model: Motivations We know the what, who and when… need to know the why •  Introduce a Motivation class, separate from Annotation class. •  Uses the SKOS Concept ontology to provide richness and cross- community resolution. •  Spec gives advice on how to create your own Motivations when necessary. Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 36
  37. 37. Core Data Model: Motivations Motivation Description oa:bookmarking Recording a resource or point of interest oa:classifying Assigning a class to a resource oa:commenting Providing a review or comment oa:describing Describing the resource oa:editing Requesting a change to the resource oa:highlighting Region or span of interest to highlight oa:identifying Assigning an identifier to a resource oa:linking Linking another resource to the target oa:moderating Assignment of value or quality oa:questioning Asking a question about the resource oa:replying Replying to previous statement or q. oa:tagging Tagging a resource Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 37
  38. 38. Core Data Model: Motivations Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 38
  39. 39. Core Data Model: Motivations Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 39
  40. 40. Thank You Robert Sanderson azaroth42@gmail.com Los Alamos National Laboratory @azaroth42 Paolo Ciccarese paolo.ciccarese@gmail.com Harvard Medical School @paolociccarese (Community Group Co-Chairs) http://www.flickr.com/photos/hinkeb/5232293964/ http://www.w3.org/community/openannotation/ http://www.openannotation.org/ Open Annotation Community Group West Coast Open Annotation Rollout http://www.w3.org/community/openannotation/ April 9th 2013, Stanford, CA, USA 40

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