The 10thWorkshop on Multimedia Metadata (SeMuDaTe‘09) Informatik 5 (Information Systems), RWTH Aachen University Bonn-Aachen International Center for Information Technology 2.12.2009 Graz, Austria

1. Research School
The 10th Workshop on Multimedia
Metadata (SeMuDaTe‘09)
SeMuDaTe09
Context-aware Mobile Multimedia Services
2 Dec. 2009
in the Cloud
Dejan Kovachev
Ralf Klamma
Dejan Kovachev and Ralf Klamma
December 2th, 2009
Informatik 5 (Information Systems), RWTH Aachen University
Bonn-Aachen International Center for Information Technology
Lehrstuhl Informatik 5
(Informationssysteme) Graz, Austria
Prof. Dr. M. Jarke
I5-KoKl-1209-1

2. Research School
Agenda
 Motivation
SeMuDaTe09
2 Dec. 2009
Dejan Kovachev
Ralf Klamma  Context-aware systems
 Architectural design
 Data management
 Modeling
 Context-aware mobile multimedia services
 Discussions
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KoKl-1209-2

3. Research School
Motivation
Mobile phones provide a lot of contextual information
SeMuDaTe09
2 Dec. 2009 
Dejan Kovachev
Ralf Klamma
 Enrich the multimedia services
 Match media context with the user's context
 Adaptation and personalization
 Interoperability with the existing resources on the web
 Community context
⇒ Context-aware applications are the future of mobile
Lehrstuhl Informatik 5
(Informationssysteme)
computing
Prof. Dr. M. Jarke
I5-KoKl-1209-3

4. Research School
Context-aware systems
What is context in software applications?
SeMuDaTe09
2 Dec. 2009 
Dejan Kovachev
Ralf Klamma
 Context-aware applications [Day 2001]
 Contextual information
– In mobile applications: spatial, temporal, environmental,
social information, availability of resources [Cadenas et al. 2009]
 Context models
– Expressed in ontologies
– Model the semantics of the user, context and multimedia
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KoKl-1209-4

5. Research School
Architectural Design
Cloud computing
SeMuDaTe09
2 Dec. 2009

Dejan Kovachev
– Enhanced interoperability
Ralf Klamma
– Scalable resources on-demand [Agraval et al. 2008] [Wright 2009]
– Off-loading computation-intensive mobile
applications [Chun & Maniatis 2009]
– Open-source implementations – Hadoop, Nimbus (~Amazon EC2),
Eucaliptus
 Semantic Web in the cloud computing model
– LinkedData, Geonames, DBPedia, Sindice
– Search for people, places, events, and connections on the basis of
semantically structured documents found on the Web [Mika &Tummarello
Lehrstuhl Informatik 5
2008]
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KoKl-1209-5

6. Research School
Data Management
SeMuDaTe09
2 Dec. 2009
Context
store
Dejan Kovachev
Ralf Klamma Linked
Data
Context
Ontology
3D Artifacts
CMS
Multimedia
Ontology
Multimedia
Heterogeneous
Platforms
Heterogeneous
Data
Lehrstuhl Informatik 5 (Archeological, 3D, User data)
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KoKl-1209-6

7. Research School
Multimedia and Context Modeling
Multimedia Ontology
SeMuDaTe09
2 Dec. 2009 
Dejan Kovachev – COMM, MPEG-7-based (Rhizomik)
Ralf Klamma
 Context ontology
– Delivery Context Ontology, CONON, COMANTO
 Sharing contextual knowledge
 Reuse existing ontologies
 Context processing and classification
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KoKl-1209-7

8. Research School
Context-aware Mobile Multimedia
Services
Specific subset of context-aware applications related
SeMuDaTe09
2 Dec. 2009 
Dejan Kovachev to multiple media types
Ralf Klamma
 Combination of context information with the media
metadata
 Presentation and adaptation
of multimedia taking context
into account
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KoKl-1209-8

9. Research School
Discussions
Confluence of the two mega trends may bring to
SeMuDaTe09
2 Dec. 2009 
Dejan Kovachev loosely coupled ubiquitous services that have context
and are ultimately understood by machines
Ralf Klamma
 How to bring the semantic computing techniques into
the cloud platform?
 And what is the real value?
 How should the context-aware architecture be
structured?
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KoKl-1209-9