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Displaying 1-37 out of 37 total
Smart CloudBench -- Automated Performance Benchmarking of the Cloud
Found in: 2013 IEEE 6th International Conference on Cloud Computing (CLOUD)
By Mohan Baruwal Chhetri,Sergei Chichin, Quoc Bao Vo,Ryszard Kowalczyk
Issue Date:June 2013
pp. 414-421
As the rate of cloud computing adoption grows, so does the need for consumption assistance. Enterprises that are looking to migrate their IT systems to the cloud, would like to quickly identify providers that offer resources with the most appropriate prici...
 
A Decentralized Service Discovery Approach on Peer-to-Peer Networks
Found in: IEEE Transactions on Services Computing
By Qiang He,Jun Yan,Yun Yang,Ryszard Kowalczyk,Hai Jin
Issue Date:January 2013
pp. 64-75
Service-Oriented Computing (SOC) is emerging as a paradigm for developing distributed applications. A critical issue of utilizing SOC is to have a scalable, reliable, and robust service discovery mechanism. However, traditional service discovery methods us...
 
Policy-Based Automation of SLA Establishment for Cloud Computing Services
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Mohan Baruwal Chhetri,Quoc Bao Vo,Ryszard Kowalczyk
Issue Date:May 2012
pp. 164-171
We propose a policy-based framework for the automated establishment of SLAs for cloud computing services. The proposed framework supports multiple interaction models for SLA establishment giving consumers and providers the flexibility to choose one that is...
 
On Effective Quality of Service Negotiation
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Khalid Mansour,Ryszard Kowalczyk,Mohan Baruwal Chhetri
Issue Date:May 2012
pp. 684-685
This paper addresses the problem of flexible procuring of multiple services with multiple non-functional characteristics, i.e., quality of service attributes. We investigate the one-to-many negotiation approach as a flexible method for procuring multiple s...
 
A Flexible Policy Framework for the QoS Differentiated Provisioning of Services
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Mohan Baruwal Chhetri, Bao Quoc Vo, Ryszard Kowalczyk
Issue Date:May 2011
pp. 444-453
We propose a policy-based framework for the QoS differentiated provisioning of services. The proposed frame-work improves the state-of-the-art in policy-based preferencespecification by combining cardinal and ordinal preferences. We describe the underlying...
 
Utility Decomposition and Surplus Redistribution in Composite SLA Negotiation
Found in: Services Computing, IEEE International Conference on
By Jan Richter, Mohan Baruwal Chhetri, Ryszard Kowalczyk, Bao Quoc Vo, Muhammed Adeel Talib, Alan Colman
Issue Date:July 2010
pp. 627-630
The end-to-end QoS negotiation for SLA establishment for composite services involves compound multi-party negotiations in which the composite service provider concurrently negotiates with multiple candidates for each atomic service, selecting the ones that...
 
Policy-Based Management of QoS in Service Aggregations
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Mohan Baruwal Chhetri, Bao Quoc Vo, Ryszard Kowalczyk
Issue Date:May 2010
pp. 593-595
We present a policy-centered QoS meta-model which can be used by service providers and consumers alike to express capabilities, requirements, constraints, and general management characteristics relevant for SLA establishment in service aggregations. We als...
 
New Mechanisms for Mixing Time- and Behaviour-Dependent Tactics in Negotiation Strategies
Found in: Web Intelligence and Intelligent Agent Technology, IEEE/WIC/ACM International Conference on
By Jan Richter, Ryszard Kowalczyk
Issue Date:December 2008
pp. 451-455
This paper studies three different mixing mechanisms for creating negotiation strategies out of single tactics. It shows that a mechanism introduced by Faratin et al [5] can result in a non-monotonic behaviour in a negotiation strategy in some scenarios wh...
 
Non-symmetric Preferences in the IPA Market with Reinforcement Learning
Found in: Web Intelligence and Intelligent Agent Technology, IEEE/WIC/ACM International Conference on
By Eduardo Rodrigues Gomes, Ryszard Kowalczyk
Issue Date:December 2008
pp. 424-430
Machine Learning has been proposed to support and optimize market-based resource allocation. In particular, Reinforcement Learning (RL) has been used to improve the allocation in terms of the utility received by resource requesting agents in the Iterative ...
 
Decentralized Co-allocation of Interrelated Resources in Dynamic Environments
Found in: Web Intelligence and Intelligent Agent Technology, IEEE/WIC/ACM International Conference on
By Tino Schlegel, Ryszard Kowalczyk, Quoc Bao Vo
Issue Date:December 2008
pp. 104-108
The vision of transparent, on-demand resource utilization in distributed and open environments requires resource management techniques that are robust, scalable and able to adapt to the dynamic environment. In this paper, we propose a decentralized resourc...
 
Chord4S: A P2P-based Decentralised Service Discovery Approach
Found in: Services Computing, IEEE International Conference on
By Qiang He, Jun Yan, Yun Yang, Ryszard Kowalczyk, Hai Jin
Issue Date:July 2008
pp. 221-228
Service-oriented computing is emerging as a paradigm for developing distributed applications. A critical issue of utilising service-oriented computing is to have a scalable, reliable and robust service discovery mechanism. However, traditional service disc...
 
Social Network Profile and Policy
Found in: Policies for Distributed Systems and Networks, IEEE International Workshop on
By Juliana Mitchell-Wong, Ryszard Kowalczyk, Bao Quoc Vo
Issue Date:June 2008
pp. 207-210
A social network describes an entity's relationship with other entities for interacting. The digital world currently consists of many isolated communities or domains that enable entities to form social networks within each community but not across communit...
 
Towards a Fuzzy-Based Model for Human-like Multi-Agent Negotiation
Found in: Intelligent Agent Technology, IEEE / WIC / ACM International Conference on
By Zaynab Raeesy, Jakub Brzostwoski, Ryszard Kowalczyk
Issue Date:November 2007
pp. 515-519
<p>Intelligent agents are applied to automate the process of negotiation. Typical multi-agent negotiation strategies only allow the exchange of precise quantitative values as attributes. In the real-world applications, many of the negotiation issues ...
 
Learning the IPA Market with Individual and Social Rewards
Found in: Intelligent Agent Technology, IEEE / WIC / ACM International Conference on
By Eduardo Rodrigues Gomes, Ryszard Kowalczyk
Issue Date:November 2007
pp. 328-334
Market-based mechanisms offer a promising approach for distributed allocation of resources without centralized control. One of those mechanisms is the Iterative Price Adjustment (IPA). Under standard assumptions, the IPA uses demand functions that do not a...
 
On Solving Distributed Fuzzy Constraint Satisfaction Problems with Agents
Found in: Intelligent Agent Technology, IEEE / WIC / ACM International Conference on
By Xuan Thang Nguyen, Ryszard Kowalczyk
Issue Date:November 2007
pp. 387-390
Fuzzy Constraint Satisfaction Problem (FCSP) offers flexible modelling and solving of many real world problems such as scheduling and resource allocation. In this paper, we focus on Distributed Fuzzy Constraint Satisfaction problems (DisFCSP) where fuzzy c...
 
JADE-FSM-Engine: A Deployment Tool for Flexible Agent Behaviours in JADE
Found in: Intelligent Agent Technology, IEEE / WIC / ACM International Conference on
By Suk Keong Goh, Mohan Baruwal Chhetri, Ryszard Kowalczyk
Issue Date:November 2007
pp. 524-527
Multiagent systems (MAS) are a promising software development paradigm for complex and dynamic application domains. However, building effective MAS software requires models, mechanisms and tools that support the flexible and precise specification and imple...
 
A Graph-Based Multi-Agent Planning Algorithm with QoS Guarantees
Found in: Intelligent Agent Technology, IEEE / WIC / ACM International Conference on
By Jian Feng Zhang, Xuan Thang Nguyen, Ryszard Kowalczyk
Issue Date:November 2007
pp. 273-276
Many existing planning approaches assume the existence of a centralized planner that has complete information of its planning problem. However, with the increasing popularity of distributed paradigm today, a planning problem may span across the boundaries ...
 
ASAPM - An Agent-Based Framework for Adaptive Management of Composite Service Lifecycle
Found in: Web Intelligence and Intelligent Agent Technology, International Conference on
By Mohan Baruwal Chhetri, Ingo Mueller, Suk Keong Goh, Ryszard Kowalczyk
Issue Date:November 2007
pp. 444-448
Agent technology is well positioned to address some of the key problems of Service-oriented Computing. It can work together with other technologies such as Web/Grid Services, Semantic Web, Process technologies, and Component Software to contribute to wide ...
 
Learning in Market-based Resource Allocation
Found in: Computer and Information Science, ACIS International Conference on
By Eduardo Rodrigues Gomes, Ryszard Kowalczyk
Issue Date:July 2007
pp. 475-482
Market-based mechanisms offer a promising approach for distributed allocation of resources without centralized control. One of those mechanisms is the Iterative Price Adjustment (IPA). Under standard assumptions, the IPA uses demand functions that do not a...
 
Adaptive Negotiation with On-Line Prediction of Opponent Behaviour in Agent-Based Negotiations
Found in: Intelligent Agent Technology, IEEE / WIC / ACM International Conference on
By Jakub Brzostowski, Ryszard Kowalczyk
Issue Date:December 2006
pp. 263-269
We propose an adaptive approach in agent-based negotiation involving on-line prediction of the opponent behaviour based on the parametric non-linear regression analysis. The predictive decision-making mechanism for the negotiation agent is based on the his...
 
An Agent Based QoS Conflict Mediation Framework for Web Services Compositions
Found in: Intelligent Agent Technology, IEEE / WIC / ACM International Conference on
By Xuan Thang Nguyen, Ryszard Kowalczyk
Issue Date:December 2006
pp. 522-528
Web services technology is prevailing for business-to- business integration due to its well defined infrastructure enabling interoperability among heterogeneous applications. However, this interoperability promise also poses a difficulty in building a Web ...
 
Dynamic Asynchronous Aggregate Search for Solving QoS Compositions of Web Services
Found in: Web Intelligence and Intelligent Agent Technology, International Conference on
By Xuan Thang Nguyen, Ryszard Kowalczyk, Khoi Anh Phan
Issue Date:December 2006
pp. 142-145
There has been recently an increase of interests in Distributed Constraint Satisfaction (DisCSP) algorithms. Most of these algorithms assume that the set of variables and constraints in a DisCSP are completely known and fixed. However, these assumptions do...
 
Towards Agent-Based Coalition Formation for Service Composition
Found in: Intelligent Agent Technology, IEEE / WIC / ACM International Conference on
By Ingo Muller, Ryszard Kowalczyk, Peter Braun
Issue Date:December 2006
pp. 73-80
The topic of agent-based service composition has been experiencing much attention recently. Researchers are applying agent technology with the aim to improve adaptiveness and flexibility of prevailing static Web service composition solutions. One major cha...
 
Agent-based Dis-graph Planning Algorithm for Web Service Composition
Found in: Computational Intelligence for Modelling, Control and Automation, International Conference on
By Jian Feng Zhang, Ryszard Kowalczyk
Issue Date:December 2006
pp. 258
In agent-based planning for service composition, a single agent may not have access to all services required to fulfill a given goal. Cooperation among multiple agents, each of whom has a limited set of services, can increase the chance of generating a val...
 
Modelling and Solving QoS Composition Problem Using Fuzzy DisCSP
Found in: Web Services, IEEE International Conference on
By Xuan Thang Nguyen, Ryszard Kowalczyk, Manh Tan Phan
Issue Date:September 2006
pp. 55-62
Web service compositions have attracted considerable efforts in the context of supporting enterprise application integrations. For a composite service, in addition to its functional requirements, QoS requirements are important and deserve a special attenti...
 
A Coordinated Architecture for the Agent-based Service Level Agreement Negotiation ofWeb Service Composition
Found in: Software Engineering Conference, Australian
By Mohan Baruwal Chhetri, Jian Lin, SukKeong Goh, Jian Ying Zhang, Ryszard Kowalczyk, Jun Yan
Issue Date:April 2006
pp. 90-99
Recent progress in the field of web services has made it possible to integrate inter-organizational and heterogeneous services on the web at runtime. If a user request cannot be satisfied by a single web service, it is (or should be) possible to combine ex...
 
A Service Workflow Management Framework Based on Peer-to-Peer and Agent Technologies
Found in: Quality Software, International Conference on
By Jun Yan, Yun Yang, Ryszard Kowalczyk, Xuan T. Nguyen
Issue Date:September 2005
pp. 373-382
Service workflow management which consolidates multiple services to achieve business goals has become a critical issue in service-oriented computing. Due to the unique feature of service workflows such as full distribution and high dynamicity, the contempo...
 
Increasing the Migration E.ciency of Java-based Mobile Agents
Found in: Intelligent Agent Technology, IEEE / WIC / ACM International Conference on
By Peter Braun, IngoM uller, Ryszard Kowalczyk, Steffen Kern
Issue Date:September 2005
pp. 508-511
<p>Mobile agents were introduced as a design paradigm for distributed systems to reduce network traffic as compared to client-server based approaches, simply by moving code close to the data instead of moving large amount of data to the client. Altho...
 
Enabling Agent-Based Management of Web Services with WS2JADE
Found in: Quality Software, International Conference on
By Xuan Thang, Ryszard Kowalczyk
Issue Date:September 2005
pp. 407-412
Web services management has attracted substantial research and industry interests in recent years. Web services technology is gaining popularity because of its well defined infrastructure aiming at enabling interoperability among heterogenous applications....
 
Design Patterns for Agent-Based Service Composition in theWeb
Found in: Quality Software, International Conference on
By Ingo Muller, Peter Braun, Ryszard Kowalczyk
Issue Date:September 2005
pp. 425-430
Service-oriented architectures have been recognized as advantageous architectural styles for future enterprise and scientific applications. However, on top of already available middleware layers, many problems regarding services engineering and management ...
 
InterMarket - Towards Intelligent Mobile Agent e-Marketplaces
Found in: Engineering of Computer-Based Systems, IEEE International Conference on the
By Ryszard Kowalczyk, Bogdan Franczyk, Andreas Speck, Peter Braun, Jan Eismann, Wilhelm Rossak
Issue Date:April 2002
pp. 0268
This paper presents work-in-progress towards the development of an intelligent mobile agent-based e-marketplace system called InterMarket. InterMarket aims at enabling mobile access and automated trading in e-marketplaces based on integration of mobile age...
 
Dynamic analysis of multiagent Q-learning with ε-greedy exploration
Found in: Proceedings of the 26th Annual International Conference on Machine Learning (ICML '09)
By Eduardo Rodrigues Gomes, Ryszard Kowalczyk
Issue Date:June 2009
pp. 1-8
The development of mechanisms to understand and model the expected behaviour of multiagent learners is becoming increasingly important as the area rapidly find application in a variety of domains. In this paper we present a framework to model the behaviour...
     
Towards self-organising agent-based resource allocation in a multi-server environment
Found in: Proceedings of the 6th international joint conference on Autonomous agents and multiagent systems (AAMAS '07)
By Ryszard Kowalczyk
Issue Date:May 2007
pp. N/A
Distributed applications require distributed techniques for efficient resource allocation. These techniques need to take into account the heterogeneity and potential unreliability of resources and resource consumers in a distributed environments. In this p...
     
Towards autonomous mobile agents with emergent migration behaviour
Found in: Proceedings of the fifth international joint conference on Autonomous agents and multiagent systems (AAMAS '06)
By Peter Braun, Ryszard Kowalczyk, Tino Schlegel
Issue Date:May 2006
pp. 585-592
Along with manifold advantages of distributed multi-agent systems, increased network traffic produced by highly communicative agents in large distributed systems has to be considered as their practical downside. We suggest to apply the programming paradigm...
     
Predicting partner's behaviour in agent negotiation
Found in: Proceedings of the fifth international joint conference on Autonomous agents and multiagent systems (AAMAS '06)
By Jakub Brzostowski, Ryszard Kowalczyk
Issue Date:May 2006
pp. 355-361
We propose an improved approach for modeling behaviours of negotiation partners and predictive decision-making based on this modelling. Our prediction is based only on the history of the offers during the current negotiation. The mechanism estimates an inf...
     
Attacking the migration bottleneck of mobile agents
Found in: Proceedings of the fourth international joint conference on Autonomous agents and multiagent systems (AAMAS '05)
By Ingo Muller, Peter Braun, Ryszard Kowalczyk, Steffen Kern
Issue Date:July 2005
pp. 1239-1240
Mobile agents were introduced as a design paradigm for distributed systems to reduce network traffic as compared to client-server based approaches, simply by moving code close to the data instead of moving large amount of data to the client. Although this ...
     
On possibilistic case-based reasoning for selecting partners for multi-attribute agent negotiation
Found in: Proceedings of the fourth international joint conference on Autonomous agents and multiagent systems (AAMAS '05)
By Jakub Brzostowski, Ryszard Kowalczyk
Issue Date:July 2005
pp. 273-279
We propose an enhanced mechanism for selecting partners for multi-attribute negotiation. The mechanism employs possibilistic case-based reasoning. The possibility of successful negotiation for each potential partner is predicted on the basis of its behavio...
     
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