PRISSMA
Context-Aware Adaptation for Linked Data
PRISSMA is a presentation-level framework for Linked Data
PRISSMA extends the Fresnel vocabulary with the notion of mobile context. Besides, it includes an algorithm that determines whether the sensed context is compatible with some context declarations. The algorithm finds optimal error-tolerant subgraph isomorphisms between RDF graphs using the notion of graph edit distance and is sublinear in the number of context declarations in the system.
Features
- Declarative approach
- Domain Independence
- Standard Semantic Web Languages
- Context Awareness
- Ready for Multimodality
The PRISSMA Vocabulary
We propose to extend the Fresnel presentation-level ontology with context awareness. The resulting vocabulary specifies when (i.e. in which mobile context) Fresnel Lenses and Formats must be selected. Our solution, the PRISSMA vocabulary extends the semantics of fresnel:Purpose to delegate the selection of Lenses and Formats to a broader and more expressive definition of mobile context, modelled by the prissma:Context class.
To wrap up each context-aware presentation-level unit of information, the concept of Prism is introduced (a Prism is owl:equivalentClass to a fresnel:Group)
# Prism to style a dbpedia:Museum when user is walking in Paris
:museumPrism a prissma:Prism ;
a fresnel:Group ;
fresnel:purpose :walkingInParis ;
fresnel:stylesheetLink .
# Fresnel presentation-level triples
:museumlens a fresnel:Lens;
fresnel:group :museumPrism;
fresnel:classLensDomain dbpedia:Museum;
fresnel:showProperties ( dbpprop:location
dbpprop:publictransit
example:telephone
example:openingHours
example:ticketPrice ) .
:addressFormat a fresnel:Format ;
fresnel:group :museumPrism ;
fresnel:propertyFormatDomain dbpprop:location ;
fresnel:label "Address" ;
fresnel:labelStyle "label-address"^^fresnel:styleClass ;
fresnel:valueStyle "value-address"^^fresnel:styleClass .
# [...]
# PRISSMA context description
:walkingInParis a prissma:Context ;
prissma:user :artLover ;
prissma:environment :parisWalking .
:artLover a prissma:User ;
foaf:interest "art".
:parisWalking a prissma:Environment ;
prissma:poi :paris ;
prissma:motion "walking" .
:paris geo:lat "48.8567" ;
geo:long "2.3508" ;
prissma:radius "5000" .
PRISSMA Browser
PRISSMA Browser is an RDF browser based on Lighting Browser. The browsers renders triples with Fresnel and chooses the best representation according to mobile context with PRISSMA.
PRISSMA Studio
Evaluation Data
ESWCS and PhD Thesis
Evaluation data available here [txt].
Prisms and client contexts used in test campaign available here.
Publications
- L. Costabello. Error-Tolerant RDF Subgraph Matching for Adaptive Presentation of Linked Data on Mobile. 11th Extended Semantic Web Conference (ESWC), 2014.[PDF]
- L. Costabello. PRISSMA, Towards Mobile Adaptive Presentation of the Web of Data. ISWC 2011 Doctoral Consortium, Bonn, Germany [PDF] [Slides]