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Cole using oa-intro-dlf2012


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  • 1. 2012 DLF Forum Denver, CO 4 Nov 2012Using Open AnnotationIntroduction and Overview Timothy W. Cole ( University of Illinois at Urbana-Champaign
  • 2. Scope• Premise: Annotation is a pervasive element of scholarship – How does past practice (on paper) translate to digital realm? – What kinds of new annotation practice is enabled?• Goal: A Web and resource-centric interoperable annotation environment that allows leveraging of annotations across the boundaries of annotation clients, annotation servers, and content collections• Timeline: – OAC Phase I funded by Andrew Mellon Foundation March 2009 – 1st OAC experiments begin Jan. 2011; 2nd group begin Fall 2011 – W3C Open Annotation Community Group Formed Dec. 2011 – Draft core & extension specs posted May 2012; 1.0 release by Jan. – Public rollouts spring 2013: East Coast, West Coast, Europe
  • 3. The basic data model Anno 1 – A resource of class oa:Annotation Anno 1 identified by a URIRes B – A resource Res T – A resource(any media type) (any media type)identified by a URI oa:hasBody oa:hasTarget identified by a URI(existing or new) Says Something Res B Res T About URN:uuid:1234567890
  • 4. Basic Annotation Model:W3C Open AnnotationCommunity Group From Open Annotation Core Data Model 9 May 2012 Draft (Beta) Also Available:Open Annotation Extension Spec 9 May 2012 Draft (Beta) <Anno1> a oa:Annotation ; oa:hasBody <Body1> ; oa:hasTarget <Target1> .
  • 5. Key Features• Support for expressing provenance (under review) – Both human and machine agents• Support for expressing motivation for annotating (new) – Commenting, questioning, agreeing / disagreeing, ....• Support for annotating segment or region of target – Also State (e.g., representation, version, ...)• Support for multiple targets (revised) – Multiple individual, choice/alternatives, set / cohesive whole, list• Support for annotation of targets in context (new)• Semantic & data annotations (revised)• Basic vocabularies for selectors, motivations, ...
  • 6. Provenance and classing
  • 7. Motivation (for annotating)Current Consensus1. rdf:type•Every annotation MUST have an explicit class of oa:Annotation•Sub-classes of oa:Annotation may be used to restrict data model2. oa:motivatedBy•To express reasons why the annotation was created•Proposed oa:Motivations: oax:Commenting, oax:Tagging,oax:Highlighting, oax:Asking, oax:Editing, ....
  • 8. Specific targets & bodiesCan express / constrain:•Source•State•Selector•Scope
  • 9. Multiple targets / bodiesCurrent Consensus•Multiple occurrences of the same predicate will be treated as "Individuals". Each body annotates each target completely and independently•Other constructions require explicit, typed nodes within the graph. –oa:Choice: Exactly one of the items in the Choice should be used. –oa:Set: All of the items in the Set should be used, and order is unimportant –oa:List: All of the items in the List should be used, and order is important.•These same classes will be used for Bodies, Targets and Specifiers.•Specifiers must use one of oa:Choice, oa:Set, oa:List
  • 10. The OAC Experiments• U.of Queensland: Collaborative Development of Scholarly Editions• Stanford: Digitized Medieval Manuscripts• U. of Maryland: Streaming Video Content• U. of Illinois: Digital Emblematica• Cornell: Maphub Phase II• Brown: OAC Compliant Annotation Framework in Fedora• Meertens Inst: CATCHPlus Open Document Annotation• U. of Colorado: Annotation of Biomedical Text• NYU: Middleware for Scholarly Publications and Resources
  • 11. Next• Andy Ashton• Jacob Jett• Kevin Livingston• Links (after the other presentations): – W3C Open Annotation Community Group – Open Annotation Collaboration / Annotation Ontology Initiative – Simple demo• Use cases (from the audience)