semantics & knowledge management chennai 17.2.2004 steffen staab priv.-doz. dr.rer.nat
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Semantics & Knowledge Management Chennai 17.2.2004 Steffen Staab Priv.-Doz. Dr.rer.nat. Institut e AIFB, Universität Karlsruhe http://www.aifb.uni-karlsruhe.de/WBS Ontoprise GmbH, Karlsruhe - Semantics for the Web - http://www.ontoprise.de. AIFB. - PowerPoint PPT PresentationTRANSCRIPT
Semantics & Knowledge Management
Chennai17.2.2004
Steffen StaabPriv.-Doz. Dr.rer.nat.
Institute AIFB, Universität Karlsruhehttp://www.aifb.uni-karlsruhe.de/WBS
Ontoprise GmbH, Karlsruhe - Semantics for the Web -
http://www.ontoprise.de
AIFB
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© Steffen Staab 2004
Semantic Web and Peer-to-Peer
I need booking numbers for South India 2003
Do you have booking numbers for South India
2003?
Do you need booking numbers for South India
2003?
Do you need booking numbers for South India
2003?
Do you need booking numbers for South India
2003?
EU IST SWAPSemantic Web And
Peer-to-peer
Files, E-Mail, RelDB,...
Bookings in Chennai
Do you need booking numbers for South India
2003?
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© Steffen Staab 2004
Files, E-Mail, RelDB,...
Bookingsin Chennai
Semantic Knowledge Retrieval via Swapster
I need booking numbers for South India 2003
EU IST SWAPSemantic Web And
Peer-to-peer
Here is a file with booking numbers
for Chennai
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© Steffen Staab 2004
Advantages
Semantic Web-based Data Storage and Querying (RDF)
Very flexible platform
Peer-to-Peer Fault-tolerant network behaviour Only standard PCs
Runs now and still comprises many challenges
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Base Technology
Ontology Editing Environment (OntoEdit) Provide semantic underpinning
Ontology Learning Environment (Text-to-Onto) Facilitate ontology engineering
Ontology Storage, Reasoning, Querying (OntoBroker & KAON)
Deliver concepts and data
Semantic Middleware (KAON Server) Deliver concepts and data
Semi-automatic Semantic Annotation Tool (OntoMat-Annotizer) Provide semantic data
Peer-to-Peer Platform (Swapster) Personal information sharing
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Challenges
Studies
Case Study Virtual Organisation IBIT – Tourism on Mallorca;8 Organisations, 40 Peers
Case Study BibsterBibliography case study;Open-source roll-out planned for May 2004 with 100 Peers
!? German-Indo Case Study in Combination with Research Challenge !?
Some Research Challenges
Semantic ad-hoc Integration of Ontologies and Data
Duplicate Detection
Distributed Ontology Engineering
Ontology Learning
Multi-Lingual Ontologies
Multi-Lingual Information Retrieval
Semantic Query-Routing
...
„Which references do you have for ‚Staab 2005‘ ?“
Drop me an email if you‘d like to participate in the
Bibster case study in May!!
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© Steffen Staab 2004
Clustering
Erk lärung
Representation of docum ents
Hintergrund-w issen
Text Clustering with OK-Means
Oman granted term crude
[ICDM 2003; PKDD 2003]
Background Knowledge
DocumentsRepresentation of Documents
Explain
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WordNet as Ontology
144684 lexical entries
Rootentity
something
physical object
artifact
substance
chemical compound
organiccompound
lipid
oil
EN:oil
covering
coating
paint
oil paint
cover
cover with oil
bless
oil, anoint
EN:anoint EN:inunct
109377 Concepts (Synsets)
oil colorcrude oil
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Annotation for the Web
„Ask the Web what it can do for you!“ E.g. „Is Chennai a City?“
- Ask the Web for „the city of Chennai“- Ask the Web for „Chennai, the city“- Ask the Web for „Chennai is a city“- Ask the Web for „Cities like Chennai“
Aggregate results: you got it! (see WWW2004 results)
Further challenges along this line:- Multi-lingual retrieval- Multi-document retrieval (one document may not be
enough)- Annotation in communities (a „Hamburger“ in a fast
food restaurant is something different than an inhabitant of „Hamburg“)
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© Steffen Staab 2004
Other currently running projects at our research group
SEKT – Semantics-based KM
Acemedia – Multimedia Annotation
DotKom – Information Extraction
for KM
WonderWeb – Semantic Web Infrastructure
Halo – Dark MatterKnowledge Engineering
for the Sciences
DIP – Semantic Web Services
SemiPort – Semantic Portal
Technologies for Libraries...and some more....
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© Steffen Staab 2004
Thank you!
www.aifb.uni-karlsruhe.de/~sst www.ontoprise.de