persistent annotations deserve new uris
DESCRIPTION
Persistent Annotations Deserve New URIsTRANSCRIPT
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Persistent Annotations Deserve
New URIs
Abdulla [email protected]
Old Dominion University
Michael L. [email protected]
JCDL 2011Ottawa, CanadaJune 15, 2011
This work supported in part by NSF IIS-1009392.
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Introduction• An annotation can be described as a relation between
different resources with different media types like text, image, audio, or video.
http://bioweb.uwlax.edu/bio203/s2007/shahrach/map.JPG
http://2.bp.blogspot.com/_2ASHdLrOGi0/TNmzuwr3kKI/AAAAAAAAAzI/Y91p52Huq3s/s1600/elephant-tusks-460_1016757c-739042.jpg
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Goals• A unique URI for every annotation.• Persistent annotations and
resources.• Annotate specific part of media. • Keep track of the resources. • Present annotation in browser.• Meet the OAC model requirements.
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OAC Model
• OAC introduces a new resource that creates the relationship between the body and target.
oac:hasBody oac:hasTarget
ex:Tusk
ex:Anno
oac: Annotation
rdf:type
http://cs.odu.edu/~aalasaad/RDF/344.rdf Ex:Anno
http://bioweb.uwlax.edu/bio203/s2007/shahrach/map.JPG Ex:Africa
http://2.bp.blogspot.com/_2ASHdLrOGi0/TNmzuwr3kKI/AAAAAAAAAzI/Y91p52Huq3s/s1600/elephant-tusks-460_1016757c-739042.jpg
Ex:Tusk
ex:Africa
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Annotation Example
http://bit.ly/g55gvD http://bioweb.uwlax.edu/bio203/s2007/shahrach/map.JPG
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The example in the baseline OAC
model
http://128.82.5.41:8080/RDF/344.rdf
http://bioweb.uwlax.edu/bio203/s2007/shahrach/map.JPG
http://bit.ly/g55gvD
• OAC specifies the relations between resources.• Describes the annotation.
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W3C Media Fragments
• Media fragment specification does not support non-rectangular shapes.
• SVG technology allows users to select particular parts of the images of any shape.
• Suppose we want to identify a non-rectangular region?
• http://bioweb.uwlax.edu/bio203/s2007/shahrach/map.png#xywh=100,200,360,260
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Annotation’s URI
http://128.82.5.41:8080/cgi-bin/retrieve.py?svg=334
http://bit.ly/i2AfwN
•The generated URIs are long.•The annotating service shorten the Long URIs using Bit.ly API.•Easier to share, and collect statistics. •More URIs !.
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Annotation’s resources• Resources may:
o Move [location]o Change [updated] o Disappear .
• Each resource has an archived copy.• More URIs !
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How to manage all these URIs?
• Annotation:• http://128.82.5.41:8080/RDF/344.rdf• http://bit.ly/kZO9m4• http://www.webcitation.org/5zQhYKTtg
• Target:• http://bioweb.uwlax.edu/bio203/s2007/shah_rach/ma
p.JPG• http://www.webcitation.org/5zQi6eUow
• Body:• http://2.bp.blogspot.com/_2ASHdLrOGi0/TNmzuw
r3kKI/AAAAAAAAAzI/Y91p52Huq3s/s1600/elephant-tusks-460_1016757c-739042.jpg
• http://bit.ly/g55gvD• http://www.webcitation.org/5zQiP22Lb
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Resource maps and link headers
• Resource maps describe the aggregation of all these URIs.
• Resource maps can be discovered by examining the http link response headers when dereferencing any of the URIs.
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(A) The annotation
uu1
oac:hasBody oac:hasTarget
oac:constrainsoac:constrainedBy
Ex:Anno
ex:AFRICA
ex:Tusk
ex:svg
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(B) Adding mementos
M-2
M-1
uu1
M-4
M-3
oac:hasBody
memento
oac:hasTarget
oac:constrainsoac:constrainedBymemento
memento
memento Ex:Anno
ex:AFRICA
ex:Tusk
ex:svg
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(C) Resource Map to aggregate
resources
Agg
M-2
M-1
uu1
M-4
M-3
ReM
oac:hasBody
memento
oac:hasTarget
oac:constrainsoac:constrainedBymemento
memento
memento Ex:Anno
ex:AFRICA
ex:Tusk
ex:svg
ore:describes
ore:aggregates
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Implementation• Two main services:
o Create and share the annotation.o Retrieve and represent the annotation.
• Scalable Vector Graphs SVG.• ORE Resource Maps.• WebCite.• Bitly.
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http://bit.ly/i2AfwN
Create The Annotation
Browser
Push to Archive
Generate RDF
Generate ReM
Shorten the URI
Annotation’s data
Annotation’s URI
Our online annotating service
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Retrieve and share the annotation
http://bit.ly/i2AfwN
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Conclusion• The paper concentrates mainly on minting new URIs
for the annotations.
• Annotating the media fragments was made possible using the SVG and its media tags.
• Using the web archives solved the issue of keeping the annotation persistent over time.
• The Resource Map is the perfect solution to keep track of all the resources.
• Demonstration video:• http://bit.ly/Annotate
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Conclusion• The paper concentrates mainly on minting new URIs for the
annotations.
• Annotating the media fragments was made possible using the SVG and its media tags.
• Using the web archives solved the issue of keeping the annotation persistent over time.
• The Resource Map is the perfect solution to keep track of all the resources• Demonstration video:
• http://bit.ly/Annotate
• E-mail: [aalasaad] at [cs.odu.edu]