ITEM METADATA RECORD
Title: Transformer: an adaptation framework supporting contextual adaptation behavior composition
Authors: Gui, Ning ×
De Florio, Vincenzo
Holvoet, Tom #
Issue Date: Aug-2013
Publisher: Wiley Interscience
Series Title: Software: Practice & Experience vol:43 issue:8 pages:937-967
Abstract: As software systems today increasingly operate in changing and complex environments, they are expected to
dynamically adapt to the changing environments sometimes with multiple co-existing adaptation goals. This
paper proposes an adaptation framework to facilitate adaptation with multiple concerns by using reusable
and composable adaptation modules. Rather than using one-size-fits-all approach, in this framework, system
global adaptation behavior is generated by contextually fusing adaptation plans from multiple adaptation
modules. In order to handle possible conflicts from multiple adaptation plans, supports for conflict detection
and resolution are provided.
Following the framework design principles, a supporting middleware is implemented based on the
service-oriented component model. Adaptation behaviors are realized as individually deployable adaptation
components. A strategy called normalized context matching degree is proposed to rate and select applicable
adaptation components. Possible conflicts in dealing with multiple adaptation concerns are resolved by
using the semantics of actuators and context conditions. This middleware is also designed to be readily
reconfigurable to support new features. Case studies and experiment results show that our framework
exhibits significant advantage over traditional approaches in light of flexibility and reusability of the
adaptation modules, with little complexity and performance overhead
ISSN: 0038-0644
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Informatics Section
× corresponding author
# (joint) last author

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