Update from the W3C Web Annotation Working Group on its progress towards establishing a data model, vocabulary, serialization, and interaction protocol for digital annotation.

1. @azaroth42
Web
Annotation
WG
Update
Rob
Sanderson
rsanderson@getty.edu
W3C
Web
Annotation
Working
Group
Update

2. @azaroth42
Web
Annotation
WG
Update
Brief
History
of
Annotation
at
W3C
• 2001
Annotea
• 2009
Open
Annotation
Collaboration
&
Annotation
Ontology
• 2011
Open
Annotation
Community
Group
• 2014
Web
Annotation
Working
Group
• 2016
Technical
Recommendations?

3. @azaroth42
Web
Annotation
WG
Update
Community
Group
Mission
Interoperabilitybetween
Annotation
systems
& platforms
by
…following
the
Architecture
of
the
Web
…reusing
existing
web
standards
…providing
a
single,
coherent
model
to
implement
…which
is
orthogonal
to
the
domain
of
interest
…without
requiring
adoption
of
specific
platforms
…while
maintaining
low
implementation
costs

4. @azaroth42
Web
Annotation
WG
Update
Working
Group
Charter
1. Model Working
Draft
towards
TR
2. Vocabulary Working
Draft
towards
TR
3. Serialization Merged
with
Model
4. Protocol Working
Draft
towards
TR
5. Client
API Working
Draft
6. Robust
Linking No
formal
output
http://w3.org/TR/annotation-­‐model
…/annotation-­‐vocab
…/annotation-­‐protocol

5. @azaroth42
Web
Annotation
WG
Update
Annotation?
A
set
of
connected
resources,
typically
including
a
body
and
target,
where
the
body
is
related
to
the
target.
Users
annotate
in
order
to
…
Provide
an
aide-­‐memoire bookmarking
…
Share
and
inform commenting
…
Improve
discovery tagging
…
Organize
resources identifying
…
Interact
with
others replying
“ ”

6. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

7. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

8. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

9. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

10. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

11. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

12. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

13. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

14. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

15. @azaroth42
Web
Annotation
WG
Update
Annotation
Ecosystem

16. @azaroth42
Web
Annotation
WG
Update
Data
Model

17. @azaroth42
Web
Annotation
WG
Update
Data
Model

18. @azaroth42
Web
Annotation
WG
Update
Data
Model

19. @azaroth42
Web
Annotation
WG
Update
Data
Model

20. @azaroth42
Web
Annotation
WG
Update
Data
Model

21. @azaroth42
Web
Annotation
WG
Update
Specific
Resource
Model

22. @azaroth42
Web
Annotation
WG
Update
Specific
Resource
Model

23. @azaroth42
Web
Annotation
WG
Update
Specific
Resource
Model

24. @azaroth42
Web
Annotation
WG
Update
Specific
Resource
Model

25. @azaroth42
Web
Annotation
WG
Update
Significant
Changes
• Use
developer-­‐friendly
names
for
JSON
keys
• Replace
embedded
content
(ContentAsText)
construction
• Allow
a
string
literal
body
(bodyValue)
• Ordered
list
of
options
for
Choice
• Use
structure
of
JSON
for
chains
of
selectors
• Clearer
cardinality
and
data
type
constraints
• Intend
to
change
namespace
URI

26. @azaroth42
Web
Annotation
WG
Update
New
Features
• New
properties:
• Rights
• Audience
• Other
Identities
(canonical,
via)
• Rendering
Software
• Allow
motivation
for
Body
&
Target
• New
Selectors:
CSS,
XPath,
Range
• Collections
of
Annotations

27. @azaroth42
Web
Annotation
WG
Update
JSON-­‐LD
{
"@context": "http://www.w3.org/ns/anno.jsonld",
"id": "http://example.org/anno20",
"type": "Annotation",
"body": "http://example.net/note1",
"target": {
"source": "http://example.com/page1.html",
"selector": {
"type": "CssSelector",
"value": "#elemid > .elemclass + p"
}
}
}

28. @azaroth42
Web
Annotation
WG
Update
Annotation
Protocol
• Based
on
Linked
Data
Platform
(LDP)
specification
• Containers
for
Annotation
management
• Follows
REST
and
Linked
Data
• Discovery
of
Annotation
Containers
via
Link
headers/elements
• Paging
mechanism
based
on
Social
Web
WG's
ActivityStreams
• JSON-­‐LD
required,
content
negotiation
for
other
RDF
formats
• Server
will
return
created
annotation
on
PUT/POST

29. @azaroth42
Web
Annotation
WG
Update
Next
Steps
• Testing!
• Have
a
testing
plan
based
on
Web
Platform
• JSON-­‐Schema
to
describe
tests
• Need
Implementations
• Need
two
implementations
for
every
feature
• Please
let
us
know
about
your
implementations!
• Please
test
them
with
the
tests,
and
contribute
the
results!

30. @azaroth42
Web
Annotation
WG
Update
Thank
You!
References:
http://www.w3.org/TR/annotation-­‐model/
http://www.w3.org/TR/annotation-­‐vocab/
http://www.w3.org/TR/annotation-­‐protocol/
Rob
Sanderson,
co-­‐chair
of
Web
Annotation
WG
rsanderson@getty.edu