Semantic Wikis OntoWiki - support for agile, distributed knowledge engineering scenarios

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

2. About us www.iris-semdata.com Lia.Veja@iris-semdata.com

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.

5. Key Technology: Wikis

6. Wiki Structure Category: Documentation Main namespace File:Text.pdf Main:Main_Page Help namespace Template namespace Template:Docu Help: How_to 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

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 Wiki category Object of interest description Vocabularies Taxonomy SMW Properties, Templates Taxonomy Ontology SMW enhanced wiki pages Ontology Open Knowledge Base

11. Semantic Wikis Knowledge expressivity User perspective

12. OntoWiki • Form-based semantic wiki application. • OntoWikiis 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 Powlframework and Erfurt API. http://powl.sourceforge.net/overview.php

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 • OntoWikiis 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-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.

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, • Slidesharepresentations, • Scientific publication data from BibSonomy, and • information about LOD2 protagonists from their FOAF/WebIDresources.

17. Semantic MediaWikiContent 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::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

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.(http://lod2.eu/Welcome.html)

19. 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

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!