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Self-Adaptive Utility-Based Web Session Management

by Nicolas Poggi, Toni Moreno, Josep Lluis Berral, Ricard Gavaldà, Jordi Torres
"... In the Internet, where millions of users are a click away from your site, being able to dynamically classify the workload in real time, and predict its short term behavior, is crucial for proper self-management and business efficiency. As workloads vary significantly according to current time of day ..."
Abstract - Cited by 13 (5 self) - Add to MetaCart
In the Internet, where millions of users are a click away from your site, being able to dynamically classify the workload in real time, and predict its short term behavior, is crucial for proper self-management and business efficiency. As workloads vary significantly according to current time

Self-Adaptive Web-Applications

by Guntram Graef, Martin Gaedke - In Poster-Proceedings of the 8 th International World Wide Web Conference , 2000
"... : The centralized delivery-mechanism of the Web enables the construction of Web applications personalized for each user by using behavior analysis. Current technologies suffer from the Web's legacy and use Log file-analysis or collaborative filtering only to adapt the content to users' nee ..."
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: The centralized delivery-mechanism of the Web enables the construction of Web applications personalized for each user by using behavior analysis. Current technologies suffer from the Web's legacy and use Log file-analysis or collaborative filtering only to adapt the content to users

Policydriven Middleware for Self-Adaptation of Web Service Compositions

by Abdelkarim Erradi, Piyush Maheshwari, Vladimir Tosic - In Proc. of the 7th International Middleware Conference (Middleware), volume 4290 of LNCS , 2006
"... Abstract. We present our policy-based middleware, called Manageable and Adaptive Service Compositions (MASC), for dynamic self-adaptation of Web services compositions to various changes. MASC integrates and extends our earlier middleware called the Web Services Message Bus (wsBus). In particular, we ..."
Abstract - Cited by 30 (7 self) - Add to MetaCart
Abstract. We present our policy-based middleware, called Manageable and Adaptive Service Compositions (MASC), for dynamic self-adaptation of Web services compositions to various changes. MASC integrates and extends our earlier middleware called the Web Services Message Bus (wsBus). In particular

Self-adaptive and self-configured CPU resource provisioning for virtualized servers using Kalman filters

by Evangelia Kalyvianaki, Steven Hand - in 2009 ICAC
"... Data center virtualization allows cost-effective server consol-idation which can increase system throughput and reduce power consumption. Resource management of virtualized servers is an important and challenging task, especially when dealing with fluctuating workloads and complex multi-tier server ..."
Abstract - Cited by 46 (3 self) - Add to MetaCart
and self-adapt to unforeseen workload intensity changes. Our more advanced controller self-configures itself to any workload condition without any a priori information. In-dicatively, it results in within 4.8 % of the performance of workload-aware controllers under high intensity workload changes

Distributed stream management using utility-driven self-adaptive middleware

by Vibhore Kumar, Brian F. Cooper, Karsten Schwan - In Proceedings of 2nd International Conference on Autonomic Computing (ICAC’05 , 2005
"... We consider pervasive computing applications that process and aggregate data-streams emanating from highly distributed data sources to produce a stream of updates that have an implicit business-value. Middleware that enables such aggregation of datastreams must support scalable and efficient selfman ..."
Abstract - Cited by 39 (8 self) - Add to MetaCart
selfmanagement to deal with changes in the operating conditions and should have an embedded businesssense. In this paper, we present a novel self-adaptation algorithm that has been designed to scale efficiently for thousands of streams and aims to maximize the overall business utility attained from running

Self-Adaptive and Self-Congured CPU Resource Provisioning for Virtualized Servers Using Kalman Filters

by Evangelia Kalyvianaki, Steven Hand
"... Data center virtualization allows cost-eective server consol-idation which can increase system throughput and reduce power consumption. Resource management of virtualized servers is an important and challenging task, especially when dealing with uctuating workloads and complex multi-tier server app ..."
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to virtual machines hosting server applications. The novelty of our approach is the use of the Kalman lter|the optimal ltering technique for state estimation in the sum of squares sense|to track the CPU utilizations and update the allocations accordingly. Our basic controllers continuously detect and self-adapt

S.: Characterizing problems for realizing policies in self-adaptive and self-managing systems

by Sowmya Balasubramanian, Sowmya Balasubramanian - In: Proceedings of the 6th ACM/IEEE International Symposium on Software Engineering for Adaptive and Self-Managing Systems (SEAMS 2011 , 2011
"... Self-adaptive and self-managing systems optimize their own behaviour accord-ing to high-level objectives and constraints. One way for human administrators to effectively specify goals for such optimization problems is using policies. Over the past decade, researchers produced various approaches, mod ..."
Abstract - Cited by 2 (2 self) - Add to MetaCart
Self-adaptive and self-managing systems optimize their own behaviour accord-ing to high-level objectives and constraints. One way for human administrators to effectively specify goals for such optimization problems is using policies. Over the past decade, researchers produced various approaches

Session-based admission control: A mechanism for peak load management of commercial web sites

by Ludmila Cherkasova, Peter Phaal - IEEE Transactions on Computers
"... AbstractÐIn this paper, we consider a new, session-based workload for measuring web server performance. We define a session as a sequence of client's individual requests. Using a simulation model, we show that an overloaded web server can experience a severe loss of throughput measured as a num ..."
Abstract - Cited by 105 (1 self) - Add to MetaCart
AbstractÐIn this paper, we consider a new, session-based workload for measuring web server performance. We define a session as a sequence of client's individual requests. Using a simulation model, we show that an overloaded web server can experience a severe loss of throughput measured as a

Self-adaptation of Fault Tolerance Requirements using Contracts

by André Luiz, B. Rodrigues, Leila N. Bezerra, Re Sztajnberg, O Loques
"... Fault tolerance is a constant concern in data centers where servers have to run with a minimal level of failures. Changes on the operating conditions or on server demands, and variations of the systems own failure rate have to be handled in such a way that SLAs are honored and services are not inter ..."
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are not interrupted. We present an approach to handle fault tolerance requirements, based on component replication, which is supported by a context-aware infrastructure and guided by contracts that describe adaptation policies for each application. At run-time the infrastructure autonomically manages the deployment

SPATIAL KNOWLEDGE MANAGEMENT SYSTEM FRAMEWORK THROUGH SELF-ADAPTIVE MODELING

by M. Nagabhushana Rao, Rama Mohan Reddy
"... In this paper, we are proposing self-adaptive software architecture for disaster management. This system uses geo-spatial data and applies spatial collocation rule to mine spatial patterns. These spatial collocation patterns are stored as knowledge database and subsequently provided to Disaster Mana ..."
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and adapts the appropriate commodity component in the web. The software architecture proposed is Web-based distributed system, which provides components for Self-adaptation. An EDMS (Epidemic Disaster Management System) is presented for an epidemic disaster.
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