Subj3ct is a directory service for the Semantic Web. Subj3ct provides tools for registering and discovering identifiers for subjects and for linking subjects to related information.

1. NetworkedPlanet
http://subj3ct.com
Subject Identity Resolution Service

3. What is meaning, what are semantics?

4. Semantics

5. Semantics

6. Agreement in computing
http://en.wikipedia.org/wiki/Bobby_Moore

7. Service for Managing this...
Store identifiers, with names and descriptions
Store equivalence between identifiers

8. Providing an Identifier Feed
Subj3ct.com (Subject Identifier Aggregator)
NRK.no Wikipedia Bob’s Feed
Organisations that want to expose subject identifiers can publish an ATOM feed..

9. Providing an Identifier Feed
TRUST and PROVENANCE

10. Using the Service
Developers can use it to look up identifiers for things
they want to talk about in their code. Places for
example, or people, or anything really.
Machines can use it to retrieve Subject Identity
Records that can be used to find equivalent identifiers
AND links to other online structured information about
a subject.

11. Using The Portal
• Without an account
– Full Text Search: https://subj3ct.com/search
– Display Information about a Subject:
https://subj3ct.com/subject?si=http%3A%2F%2Fwww.techquila.
com%2Fpsi%2Ftechquila%2F%23kal_ahmed
– Follow new feed and subject registrations:
• https://subj3ct.com/feeds/sources
• https://subj3ct.com/feeds/identifiers
– Anonymous Feed Registration
• With an account
– Namespace Registration
– Feed Registration
– Personal Subj3ct identifier namespace

12. Providing an ATOM Identifier Feed
Documentation: https://subj3ct.com/docs/api/AtomExtensions
Sample: http://www.techquila.com/psi/techquila/index.atom
<entry>
<title>{SUBJECT NAME}</title>
<id>http://www.feeds.com/psi/index.atom/1</id>
<updated>2003-12-04T14:39:10Z</updated>
<summary>
{SUBJECT DESCRIPTION}
</summary>
<link rel="SubjectIdentifier" href="{SI URI}" />
<link rel=“SubjectEquivalence” href=“{EQUIV URI}” />
<link rel=“SubjectRepresentation” href=“{RESOURCE URI}” />
</entry>

13. Providing a SKOS Identifier Feed
Documentation: https://subj3ct.com/docs/api/SKOS
Sample: http://www.techquila.com/psi/techquila/index.atom
<skos:Concept rdf:about=“{SI URI}">
<skos:prefLabel>{SUBJECT NAME}</skos:prefLabel>
<skos:definition>
{SUBJECT DESCRIPTION}
</skos:definition>
<skos:exactMatch rdf:resource=“{EQUIV URI}” />
<skos:subjectIndicator rdf:resource=“{RESOURCE URI}” />
</skos:Concept>

14. Registering A Feed
1. Create a Subj3ct account
2. Register a namespace URI
3. Validate your ownership of the namespace
4. Register the URI of your feed
OR
1. Register the URI of a feed anonymously
Documentation: https://subj3ct.com/docs/portal/QuickStart

15. Creating Identifiers Manually
• Every registered Subj3ct user has their own
namespace (http://subj3ct.com/users/kal)
• Create as many identifiers as you like under
this namespace
Documentation: https://subj3ct.com/docs/portal/QuickStart

16. API
• Retrieve subjects
– By Identifier:
http://api.subj3ct.com/subjects?identifier={identifierUri}&provenance={pr
ovenance}
– By Resource:
http://api.subj3ct.com/subjects/webaddresses?uri={representationUri}&s
kip={skip}&take={take}
– By Query
http://api.subj3ct.com/subjects/search?query={query}&skip={skip}&take=
{take}
– Formats:
XML, JSON (including support for JSONP callback), SKOS RDF,
XTM 1.0, ATOM, RSS 2.0
Documentation: https://subj3ct.com/docs/api/overview
Method Listing: https://subj3ct.com/docs/api/methods

17. The Small Vision
Subj3ct.com provides a common service for searching and getting
identifiers that can be used to tag up content produced in CMS
systems.
EPiServer, SharePoint etc....
Javascript used in the rendering of ‘tagged’ pages can connect to the
subj3ct service to show links to related subjects and also link to
online content about the same subject (Representation links)

18. The Grand Vision
Subj3ct as the DNS of the semantic web.
Web 3.0 is about publishing data online.
Clients will grab fragments of data, and from URLs in that data pull
other data.
URIs are used as Addresses and Subject Identifiers
Subj3ct.com provides a way to go from subject identifiers to
addresses for relevant semantic content
The next generation web will not be HTML and Google it will be
RDF/Topic Maps and Subj3ct.com