semantic wikis ontowiki - support for agile, distributed knowledge engineering scenarios
DESCRIPTION
Semantic Wikis OntoWiki - support for agile, distributed knowledge engineering scenarios Dr. Cornelia-Flavia VEJA. About us. www.iris-semdata.com [email protected]. CONTENT. Introduction Semantic Wikis OntoWiki Semantic MediaWiki Wiki Applications Conclusions. Introduction. - PowerPoint PPT PresentationTRANSCRIPT
Semantic Wikis
OntoWiki - support for agile, distributed knowledge engineering scenarios
Dr. Cornelia-Flavia VEJA
CONTENT
1. Introduction2. Semantic Wikis3. OntoWiki4. Semantic MediaWiki5. Wiki Applications6. Conclusions
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.
Key Technology: Wikis
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
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
Template namespaceHelp namespace
Main namespace
Wiki Structure
Category:Documentation
Help: Add_new
Help: How_toMain:Soft_Tools
Main:Main_PageFile:Text.pdf
Main:New_Event
File:Logo.jpg
Template:Docu
Template:Events
Category: Events
Wiki Interlinked Content
Help: Add_new
Help: How_to
Main:Soft_Tools
Main:Main_Page
File:Text.pdf
Main:New_Event
File:Logo.jpg
Template:Docu
Template:Events
Wikis common problems
• Unstructured information => problems for knowledge management and productivity– Quality control during data entry is less strong in wikis.
• Solutions:1. the information to be entered into structured forms - templates2. using Semantic MediaWiki extension
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.
Semantic Social Approach
TaxonomyWiki
categoryObject of interest
descriptionVocabularies
OntologySMW Properties,Templates
Taxonomy
Open Knowledge
Base
SMW enhanced wiki pages
Ontology
Semantic Wikis
User perspective
Kno
wle
dge
expr
essi
vity
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.http://powl.sourceforge.net/overview.php
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
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
OntoWiki-CMSarchitecture
• 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.
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.
Semantic MediaWiki Content
Help: Add_newMain:New_Events
Main:Conf_ICCP[[hasLogo::File.jpg]]
The [[Name::ICCP2010]]could be held in
[[Place::Cluj-Napoca]]from [[Date_start::28.08.2010]]
to [[Date_end::28.08.2010]].Please contact the chair of the
[[Event::Conference]], [[Chair::Letea Alfred]],
and fill the following form:{{Events| First= | Last=…}}
File:Logo_ICCP
Template:Events{{
| First=[[First::{{{First}}}]]| Last=[[Last::{{{Last}}}]]
| Affiliation=[[Aff::{{{Afi}}}]]…………
}}
Category: Events
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.(http://lod2.eu/Welcome.html)
Wiki ApplicationsContributions
• 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
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
Questions?
Thank you!