Foundations for a Platform to Develop Context-Aware Systems by Domain Experts
23
Foundations for a Platform to Develop Context- Aware Systems by Domain Experts David Martin, Diego Lopez, Carlos Lamsfus, Aurkene Alzua Cooperative Research Centre in Tourism – CICtourGUNE (Spain) [email protected]
-
Upload
damarcant -
Category
Technology
-
view
91 -
download
2
Transcript of Foundations for a Platform to Develop Context-Aware Systems by Domain Experts
Foundations for a Platform to Develop Context-
Aware Systems by Domain Experts
David Martin, Diego Lopez, Carlos Lamsfus, Aurkene
Alzua
Cooperative Research Centre in Tourism – CICtourGUNE (Spain)
•Outline
•Motivation
•Context
•Situation
•Context Cloud
•Conclusions
•Outline
•Motivation
•Context
•Situation
•Context Cloud
•Conclusions
Motivation
• Ubiquitous Computing
(Weiser, 1991)
Motivation
• Ubiquitous Computing: 2012
How can we personalize and adapt these systems
to people’s needs in Ubicomp environments?
Motivation
• Ubiquitous Computing: 2012
CONTEXT!!
Motivation
• The development of context-aware systems is difficult
• Technical challenges
• Context data has to be…
• Obtained (distributed, heterogeneous)
• Processed (data model)
• Managed (inference->situations)
• The system has to be adapted to the identified situation
• Definition of situations
• Which are the relevant situations?
• Where is the needed context information?
• Which are the desired behaviors of the system?
Dependent on the application domain
Manufacturing Tourism Automotive Industry …
Motivation
• We need…
• The collaboration among Domain Experts and
Programmers in the development process. They can
better identify the situations of users that can be relevant
for the system to be developed.
• Toolkits that can make easier the development of
Context-Aware Systems, even for people that do not
have programming skills
•Outline
•Motivation
•Context
•Situation
•Context Cloud
•Conclusions
… “any information that can be obtained and
processed by a hardware or a software system, in
order to identify the situation of an entity and
adapt the system’s behaviour to that situation”.
Context is…
Context
Living being Place Object
Entities
Software Hardware
Sleeping
At home Raining
Pollution
Cooking
Situations
Driving a car
Weather Time Location Date Speed
Information
QR Code
•Outline
•Motivation
•Context
•Situation
•Context Cloud
•Conclusions
A situation…
… is the state of a subset of the available context
information at a certain region in space and at a
concrete interval in time, identified by a name
Situation is…
Going out on
a rainy day
Bus stop Hotel room
Waiting for
the bus
•Outline
•Motivation
•Context
•Situation
•Context Cloud
•Conclusions
Context Cloud
Waiting for
the bus
Going out on
a rainy day Warm place
CONTEXT CLOUD
Bus stop Hotel room Beach
Domain expert
Programmer
Programmer
CONTEXT-AWARE
SYSTEM
End user
Context Cloud
• A web platform for the collaborative development of
Context-Aware Systems
Domain expert
Programmer
• Technical overview of the system
• Implementation of the final service using
the generated outputs to adapt the
behavior of the system
• Knowledge about the application domain
• Situations
Context Cloud: functionalities
CONTEXT CLOUD
Domain expert
Programmer
Active
Provider
Passive
Provider Rule1 Rule 2
Hotel
Working
Sleeping
Walking
Providers
GET
POST
Weather service Smartphone
Programmer
XML
Bus stop
CONTEXT-AWARE
SYSTEM Programmer
End user
•Outline
•Motivation
•Context
•Situation
•Context Cloud
•Conclusions
Conclusions • A Platform to Develop Context-Aware
Systems
• Improvements over existing approaches
• Free data model
• Support for mobility (GIS)
• Extensible (rules, data model, sources,…)
• Web development environment (involvement of
DE)
Conclusions • Evaluation of the platform
• Carried out in pairs composed by a Domain Expert and a Programmer
• The participants (12) were given a document where four different situations were described. • The 83% find that learning how to use the platform is
easy.
• The 83% find that the interaction with the platform is clear.
• The 83% of the participants state that it would be easy for them to become skillful at using the platform.
• The 100% state that using the platform in their jobs would enable them to develop context-aware systems more quickly and that it would make it easier to develop context-aware systems.
