1. Dr. Cornelia-Flavia VEJA
Semantic Wikis
OntoWiki - support for agile, distributed knowledge engineering scenarios
Dr. Cornelia-Flavia VEJA

2. About us

3. CONTENT Introduction Semantic Wikis OntoWiki Semantic MediaWiki
Wiki Applications
Conclusions

4. Introduction
Social networks emerge around ‘object centered sociality’ .
(Karin Knorr Cetina, Jyri Engeström)
participants consuming information and provide content and metadata
Ward Cunningham in 1994,“The simplest online database that could possibly work” – easy to edit, interlink and share
A wiki system is a form of Social Software web based platform which allows collaboratively digital content creating, maintaining and retrieving.
A wiki, as Social Software instance, is a collection of collaborative created articles having structured, formatted text and untyped hyperlinks to other related articles within the wiki and serving a community.
Web based interface on top of Fedora Commons based repository
Automatic repository management workflow
Interoperability framework for stakeholders, applications and metadata management

5. Key Technology: Wikis Why Wikis ?
wikis are a state of the art content collaborative tool
users are quite familiar with wikis
it provides a uniform tool for the (informal) specification of the different components of an enterprise model
Wiki popularity is based on several features
Collaboration aspect: information became immediately available
Simplicity of document creation and information interlinking
Openness for reading, editing and experiments (modification histories)
Fine granularity of information
Refactoring: simplicity in document creation and versioning encourage refactoring of the information
(e.g. Wikis, Weblogs, Social Media Sharing, Social Bookmarking, Podcasting, or Instant Messaging)
Collaboration aspect: information became immediately available for everybody
Simplicity of document creation and information interlinking
Openness for reading and editing: the information is open to readers and editors.
Openness for experiments: this archived by using modification histories
Fine granularity of information. In wikis this information can be easily linked and found in different contexts which increase the re-usability of information.
Refactoring: simplicity in document creation and versioning encourage refactoring of the information

6. Wiki Structure Category: Documentation Main namespace File:Text.pdf
Main:Main_Page
Help namespace
Template namespace
Help: How_to
Template:Docu
Main:Soft_Tools
Help: Add_new
Template:Events
Main:New_Event
Category: Events
File:Logo.jpg

7. Wiki Interlinked Content
Main:Main_Page
Help: How_to
Template:Docu
Main:Soft_Tools
Help: Add_new
Template:Events
Main:New_Event
File:Logo.jpg
File:Text.pdf

8. Wikis common problems
Unstructured information => problems for knowledge management and productivity
Quality control during data entry is less strong in wikis.
Solutions:
the information to be entered into structured forms - templates
using Semantic MediaWiki extension
The huge information accumulated in wikis cannot be “scraped” from outside of wikis systems and cannot be re-used by an external tool
Quality control during data entry is less strong in wikis.

9. Semantic Social Approach
Social Software deals with social connections and human readable content
Semantic Web deals with formal connections and formal content.
Semantic Social Software as a tool that simplifies and improves the creation of structured content on the Semantic Web.

10. Semantic Social Approach
Taxonomy
Wiki category
Object of interest
description
Vocabularies
Ontology
SMW
Properties,
Templates
Open
Knowledge
Base
SMW enhanced wiki pages

11. Semantic Wikis
Knowledge expressivity
User perspective

12. OntoWiki Form-based semantic wiki application.
OntoWiki is more of a collaborative ontology editor rather than a Semantic wiki.
It does not have the familiar wiki interface of entering natural language text informally to represent a concept
supports several collaborative features and allows the installation of plug-ins.
The OntoWiki implementation conceptualizes each page as a resource, storing triple statements in an RDF store.
The basis of the implementation is the Powl framework and Erfurt API.

13. OntoWiki collaborative knowledge engineering toolkit
assist you managing your knowledge
rich user interface to organize and manage resources, relations between resources, classes
It is a Linked Data server for your data as well as a Linked Data client to fetch additional data from the web
It is a Semantic Pingback Client in order to receive and send back-linking request as known from the blogosphere
OntoWiki is backend independent
MySQL database
Virtuoso Triple Store

14. OntoWiki-CMS
Human access interfaces (full-text search, faceted-browsing, query builder, HTML/RDFa, forms)
machine access (RDFa, Linked Data, SPARQL)
directly based on the RDF data model
Enable the classic separation between frontend and backend usually in web CMSs.
declarative, pattern-based manner for continuous evolution and refinement of knowledge bases
Use of Semantically Interlinked Online Communities (SIOC) for news and SKOS taxonomy for navigation

15. OntoWiki-CMS architecture
Human access interfaces (faceted-browsing, query builder, HTML/RDFa, forms)
machine access (RDFa, Linked Data, SPARQL)
directly based on the RDF data model
Enable the classic separation between frontend and backend usually found in web CMSs.

16. OntoWiki Extensions
Wikipedia like Wiki's: create wiki pages using Markdown and have to possibility to attach wiki pages to existing resources
PubSubHubbub to spread local knowledge changes over the web and be synced with foreign sources
Extension named CubeViz for visualization of statistical data which are organized in the DataCube format.
Integration of maps
Syndication via:
RSS news feeds from weblogs and Twitter,
Slideshare presentations,
Scientific publication data from BibSonomy, and
information about LOD2 protagonists from their FOAF/WebID resources.

17. Semantic MediaWiki Content
Category: Events
Main:New_Events
Help: Add_new
Template:Events {{
| First=[[First::{{{First}}}]]
| Last=[[Last::{{{Last}}}]]
| Affiliation=[[Aff::{{{Afi}}}]]
………… }}
Main:Conf_ICCP
[[hasLogo::File.jpg]]
The [[Name::ICCP2010]]
could be held in
[[Place::Cluj-Napoca]]
from [[Date_start:: ]]
to [[Date_end:: ]].
Please contact the chair of the [[Event::Conference]],
[[Chair::Letea Alfred]],
and fill the following form:
{{Events| First= | Last=…}}
File:Logo_ICCP

18. Wiki Applications
Scientific projects employ wikis as encyclopedia, handbook or publishing platforms
Research platforms need data gathered from libraries and references
Projects need bibliographic references and tools for the analysis of newly created knowledge
Projects need external metadata import and resource interlinking
There is extremely motivated community of non-technical people
OntoWiki + CubeViz are already in use for the Open Data portal of the European Union.(
Web based interface on top of Fedora Commons based repository
Automatic repository management workflow
Interoperability framework for stakeholders, applications and metadata management

19. Wiki Applications Contributions
User-centred and collaborative approach for metadata repository management
Enhance the knowledge of biodiversity
improving the availability of digital resources
digital tools for the identification of living organisms
New automatic method for metadata repository management
web-based MediaWiki system
low-tech interoperability and repository layer
Collaborative Digital Repository Management (CDRM) Model
VREs need automatic metadata initial import, automatic reference integration and user-friendly tools for Analysis
Web based interface on top of Fedora Commons based repository
Automatic repository management workflow
Interoperability framework for stakeholders, applications and metadata management

20. CONCLUSIONS usage of the same collaborative and familiar web space
builds upon existing structures, following the “natural” real-world’s relationships reflected in connections.
supports the collaboration of people with different backgrounds and expertise, allowing a layered knowledge model, complementing each other expertise.
provides instant gratification: every part of formal knowledge contributed by a user is immediately usable.
collaborative authoring tool of semantically enriched Web content

21. Questions?
Thank you!