context-aware mobile multimedia services in the cloud

Lehrstuhl Informatik 5(Informationssysteme)

Prof. Dr. M. JarkeI5-KoKl-1209-1

SeMuDaTe09

2 Dec. 2009

Dejan KovachevRalf Klamma

Research School

Context-aware Mobile Multimedia Servicesin the Cloud

Dejan Kovachev and Ralf Klamma

December 2th, 2009

The 10th Workshop on Multimedia Metadata (SeMuDaTe‘09)

Informatik 5 (Information Systems), RWTH Aachen UniversityBonn-Aachen International Center for Information Technology

Graz, Austria



SeMuDaTe09

2 Dec. 2009


Research School

Agenda

Motivation Context-aware systems Architectural design Data managementModeling Context-aware mobile multimedia services Discussions



SeMuDaTe09

2 Dec. 2009


Research School

Motivation

Mobile phones provide a lot of contextual information 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 computing



SeMuDaTe09

2 Dec. 2009


Research School

Context-aware systems

What is context in software applications? 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



SeMuDaTe09

2 Dec. 2009


Research School

Architectural Design Cloud computing

– Enhanced interoperability– 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 &Tummarello2008]



SeMuDaTe09

2 Dec. 2009


Research School

Data Management

3D ArtifactsCMS

Multimedia

Context store

Multimedia Ontology

Context Ontology

Linked Data

HeterogeneousData

(Archeological, 3D, User data)

Heterogeneous Platforms



SeMuDaTe09

2 Dec. 2009


Research School

Multimedia and Context Modeling

Multimedia Ontology– COMM, MPEG-7-based (Rhizomik)

Context ontology– Delivery Context Ontology, CONON, COMANTO

Sharing contextual knowledge Reuse existing ontologies Context processing and classification



SeMuDaTe09

2 Dec. 2009


Research SchoolContext-aware Mobile Multimedia

Services

Specific subset of context-aware applications related to multiple media types

Combination of context information with the media metadata

Presentation and adaptation of multimedia taking context into account



SeMuDaTe09

2 Dec. 2009


Research School

Discussions

Confluence of the two mega trends may bring to loosely coupled ubiquitous services that have context and are ultimately understood by machines

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?

context-aware mobile multimedia services in the cloud

Education