QoS Monitoring and Analysis Approach for Publish/Subscribe Systems Deployed on MANET

Lahyani, Imene; Khabou, Nesrine; Jmaïel, Mohamed

doi:10.1109/pdp.2012.61

Cited by 11 publications

(9 citation statements)

References 13 publications

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“…In this context category, the idea consists in specifying adaptive thresholds that are correlated with the context parameter evolution. Adaptive thresholds are calculated via different mathematical models such as Exponential Weighted Moving Average (EWMA) technique used by Lahyani et al [9], Simple Moving Average (SMA). Mathematical functions defined by the application user are used to update thresholds.…”

Section: Threshold Calculation Stepmentioning

confidence: 99%

Context analysis approach for context aware applications deployed on pervasive environments

Gassara

Rodriguez

Jmaïel

et al. 2015

EAI Endorsed Transactions on Context-aware Systems and Applicat

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The increase of mobile and interconnected devices leads to the growth of demands for context aware applications. These applications deployed on top of pervasive environments must adapt themselves to context changes. Context aware applications have to continuously sense their physical environment, and adapt their behavior accordingly. These applications must perform four phases starting by collecting and monitoring context, then analyzing context, deciding adaptation actions and finally executing the planned adaptation actions to deal with the context changes. In this paper, we focus on the second phase.We propose a context analysis approach that relies on different thresholds defined according to the user needs to detect context changes and raise notifications when changes occur. The analysis approach is performed according to three different steps. A context storage step, a context classification step, and a threshold calculation step.

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Section: Threshold Calculation Stepmentioning

confidence: 99%

Context analysis approach for context aware applications deployed on pervasive environments

Gassara

Rodriguez

Jmaïel

et al. 2015

EAI Endorsed Transactions on Context-aware Systems and Applicat

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“…[22] used by Lahyani et al [23]. This technique aims to update the threshold according to an observation window.…”

Section: Threshold Calculation For the Resources Whose Evolution Behamentioning

confidence: 99%

“…For the adaptive threshold denoted in Figure (b), mathematical methods can be applied in order to update threshold values at runtime such as the exponential weighted moving average technique used by Lahyani et al . . This technique aims to update the threshold according to an observation window.…”

Section: The Proposed Approachmentioning

confidence: 99%

Threshold‐based context analysis approach for ubiquitous systems

Khabou

Rodriguez

2013

Concurrency and Computation

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. Threshold-based context analysis approach for ubiquitous systems. Concurrency and Computation: Practice and Experience, Wiley, 2015, 27 (6), pp. 1378-1390. Threshold-based context analysis approach for ubiquitous systems Nesrine Khabou and Ismael Bouassida Rodriguez ReDCAD, University of Sfax, B.P. 1173, 3038 Sfax, Tunisia Email: nesrine.khabou@redcad.org Email: bouassida@redcad.org Abstract-In ubiquitous computing systems, applications must be able to respond to dynamic context changes in order to provide suitable services to users. A promising solution consists of developing context aware applications which automatically change their behavior according to the user needs, the user preferences, the available resources and the surrounding environment. Furthermore, a context aware application is characterized by a closed feed back loop (MAPE) with four phases: Monitoring, Analysis, Planning and Execution. In this paper, we focus on the second phase of the MAPE loop. We elaborate a layered approach composed of a context capture layer, a context management layer and a context adaptation layer. Our approach enables systems to become pervasive in a transparent manner handling context monitoring and context analysis. We focus our work on the second layer (i.e context management). We propose first a context classification which takes into acount the context parameters evolution behavior. Then, we propose a context analysis approach for ubiquitous systems which aims at analyzing context information and detecting significant changes. The proposed approach uses a threshold based technique in order to detect context changes. When relevant context changes are detected, the context aware application will be notified to trigger its suitable process dynamically in order to deal with the changes.

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“…In fact, our goal is to predict failures accurately: covering as many failures as possible while at the same time generating as few false alarms as possible. A perfect failure prediction would achieve a one-to-one matching between predicted and true failures [12].…”

Section: B Part 2: Approach Evaluation Using Accuracy Criteriamentioning

confidence: 99%

Failure Prediction for Publish/Subscribe System on MANET

Lahyani

Makki

Chassot

2012

2012 IEEE 21st International Workshop on Enabling Technologies: Infrastructure for Collaborative Enterprises

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In this paper, we treat the quality of service challenge for publish/subscribe system deployed in MANET. The proposed approach provides monitoring and proactive analysis at the middleware layer for predicting QoS degradations of logical links between brokers. Failure prediction is performed using a statistical method called Auto Regression (AR) which allows to analyze the monitored data in order to avoid failures occurrence. The simulation results which prove the efficiency of the proposed approach are reported.

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QoS Monitoring and Analysis Approach for Publish/Subscribe Systems Deployed on MANET

Cited by 11 publications

References 13 publications

Context analysis approach for context aware applications deployed on pervasive environments

Context analysis approach for context aware applications deployed on pervasive environments

Threshold‐based context analysis approach for ubiquitous systems

Failure Prediction for Publish/Subscribe System on MANET

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