Browse wiki

From Navigators

Jump to: navigation, search
Abstract Distributed protocols executing in uncerta Distributed protocols executing in uncertain environments, like the Internet or ambient computing systems, should dynamically adapt to environment changes in order to preserve Quality of Service (QoS). In earlier work, it was shown that QoS adaptation should be dependable, if correctness of protocol properties is to be maintained. More recently, some ideas concerning specific strategies and methodologies for improving QoS adaptation have been proposed. In this paper we describe Adaptare - a complete framework for dependable QoS adaptation. We assume that during its lifetime, a system alternates periods where its temporal behavior is well characterized, with transition periods during which a variation of the environment conditions occurs. Our method is based on the following: if the environment is generically characterized in analytical terms, and we can detect the alternation of these stable and transient phases, we can improve the effectiveness and dependability of QoS adaptation. To prove our point we provide detailed evaluation results of the proposed solutions. Our evaluation is based on synthetic data flows generated from probabilistic distributions, as well as on real data traces collected in various Internet-based environments. We compare our solution with other approaches and we show that Adaptare is more complex but is effective, allowing protocols to adapt to the available resources in a dependable way. e available resources in a dependable way.
Author Mônica Dixit + , António Casimiro + , Paulo Verissimo + , Paolo Lollini + , Andrea Bondavalli +
Document Document for Publication-Dixit11a.pdf +
Journal ACM Transactions on Autonomous and Adaptive Systems  +
Key Dixit11a  +
Month jul  +
Note  +
NumPubDate 2,012.07  +
Pages 18:1–18:25  +
Project Project:HIDENETS +
ResearchLine Timeliness and Adaptation in Dependable Systems (TADS) +
Title Adaptare: Supporting automatic and dependable adaptation in dynamic environments  +
Type article  +
Volume 7  +
Year 2012  +
Has improper value forThis property is a special property in this wiki. Url  +
Categories Publication  +
Modification dateThis property is a special property in this wiki. 21 January 2013 17:36:44  +
NumberThis property is a special property in this wiki. 2  +
hide properties that link here 
  No properties link to this page.


Enter the name of the page to start browsing from.
Personal tools
Navigators toolbox