Book Chapters by Krunoslav Tržec
Agreement Technologies, 2013
In this chapter we discuss how semantic technologies in general and specific Semantic Web standar... more In this chapter we discuss how semantic technologies in general and specific Semantic Web standards in particular can contribute to the goal of achieving interoperability between independent, loosely coupled, heterogeneous, autonomous software components (i.e. agents) and for the realization of open interaction systems. In particular we will discuss how those technologies have been used for the definition of the semantics of agent communication languages, for the definition of norms and policies used to regulate interactions in open frameworks, and for defining efficient mechanisms for matching demands (i.e., content they need) to supplies (i.e., available content) in telecommunication networks. In particular regarding this last type of application we describe a techno-economic approach for solving the matching problem, by means of a multi-agent system representing an electronic marketplace. Its functionality is realized by applying a semantic-aware content discovery model with two-level filtering in order to finally recommend a ranked set of eligible content to the users in response to their requests. The filtering processes not only consider the semantic information associated with the available content, but also ratings regarding the actual performance of businesses that act as content providers as well as the prices paid by businesses for advertising their content.
nnovations in Multi-Agent Systems and Applications - 1, 2010
The chapter deals with group-oriented service provisioning in next-generation network (NGN). It c... more The chapter deals with group-oriented service provisioning in next-generation network (NGN). It consists of three parts: the first bringing forth user profile creation and semantic comparison; the second explaining user profile clustering and semantic classification; and the third describing social network creation and analysis. The multi-agent system A-STORM (Agent-based Service and Telecom Operations Management) is presented and elaborated as part of the proof-of-concept prototype which demonstrates provisioning of group-oriented services within NGN. As a group-oriented service, the RESPIRIS (Recommendation-based Superdistribution of Digital Goods within Implicit Social Networks) service is implemented and provisioned by using prototype’s agents. The proposed provisioning scenario is set forth, as well as provisioning process analysis presented.
Encyclopedia of E-Business Development and Management in the Digital Economy, 2010
In a global multi-service and multi-provider market, Internet Service Providers (ISPs) will incre... more In a global multi-service and multi-provider market, Internet Service Providers (ISPs) will increasingly need to base their operation on new consumer-centric business models. In this article, we present an agent-based framework for the Business-to-Consumer (B2C) electronic market, comprising User Agents, Broker Agents and Provider Agents, which enable Internet users to select an ISP in an automated manner.
Knowledge Processing and Decision Making in Agent-Based Systems, 2009
Today, there is a wide variety of telecom services available provided by a number of competing st... more Today, there is a wide variety of telecom services available provided by a number of competing stakeholders in the telecom environment. Consequently, consumers in such an environment require efficient mechanisms to match their demands (requested services) to supplies (available services). Businesses, on the other hand, aim to achieve efficient allocation of their resources. This chapter introduces a combination of Artificial Intelligence mechanisms and Computational Economics concepts as a means of solving the above mentioned problems. These mechanisms and concepts are implemented in agent-based electronic markets. Electronic markets function as digital intermediaries that create value by bringing consumers and providers together to create transactional immediacy and supply liquidity, by supporting the exchange of demand and supply information, and reducing transaction costs. The efficiency of the created multi-agent system is realized by applying novel discovery and/or negotiation models.
Service-Oriented Computing: Agents, Semantics, and Engineering
Multimedia applications executed on mobile devices allow users to be present and communicate with... more Multimedia applications executed on mobile devices allow users to be present and communicate with other users, anywhere and anytime, through wide area cellular networks, wireless local area networks (WLAN), or fixed networks. In order to enable ubiquitous personalized services, communication systems should allow users to specify their context, or their mobile devices and network infrastructures should automatically sense their context and offer enhanced service provisioning solutions. In this paper, we propose an agent-based solution that supports context-aware provisioning of IP multimedia subsystem (IMS)-enabled ubiquitous services. Using agent technology, multimedia communication, controlled by SIP and enriched with context-related events delivered by SIP’s event mechanism, can be seamlessly provisioned, taking into account not only mobility issues and context-awareness, but also the semantics of exchanged events. This paper proposes a multi-agent system that will enable users to consume context-aware ubiquitous services in a seamless (i.e., automated) way, providing optimal provisioning of SIP-based multimedia services according to user preferences.
Papers by Krunoslav Tržec
Lecture Notes in Computer Science, 2009
The future of telecommunications is directed towards creating environments aware of user preferen... more The future of telecommunications is directed towards creating environments aware of user preferences, mobile device capabilities and communication context. Consequently, telecommunication operators have recognized the importance of dynamic formation of user groups according to similar characteristics (i.e., user preferences, user device, communication context, etc.). In this paper, we propose an agent-based solution that supports provisioning of group-oriented telecommunication services by applying ontology-based user profiling as well as semantic clustering techniques. Furthermore, proof-of-concept group-oriented service is presented.
Lecture Notes in Computer Science, 2008
The future of mobile telecommunications is aimed at creating a usercentric wireless world which t... more The future of mobile telecommunications is aimed at creating a usercentric wireless world which takes into account user's preferences, as well as communication context (e.g., network and terminal heterogeneity or user location). In order to enable context-aware personalization of communication services offered by next-generation mobile networks, we propose an agentbased approach in combination with semantic reasoning techniques from the Semantic Web. In particular, we use ontology-based user profiles to create an agent-based context-aware service which supports personalization according to user's preferences. An ontology is created which contains knowledge regarding terminal capabilities and user preferences, as well as a software agent which manages user personalization according to the context extracted from the user profile.
Context-Aware Service Provisioning in Next-Generation Networks
Applications and Systems, 2008
... Therefore, recent approaches to the discovery processes are increasingly grounded on mechanis... more ... Therefore, recent approaches to the discovery processes are increasingly grounded on mechanisms which exploit the semantics of resource descriptions (“intelligent discovery”) (Colluci, Noia, Sciascio, Donini, & Mongiello, 2005; Keller, Lara, Lausen, Polleres, & Fensel, 2005 ...
2007 9th International Conference on Telecommunications, 2007
In order to increase revenues, reduce operating costs and satisfy new user demands, network provi... more In order to increase revenues, reduce operating costs and satisfy new user demands, network providers have to develop new approaches for their service provisioning operations. One of the possible solutions for this problem is utilization of intelligent software agents. In such a scenario, software agents act on behalf of the network provider while performing certain actions in competitive environment of the telecom market. This paper presents an agent-based approach for optimization of service provisioning in a dynamic environment of the next-generation networks. Proposed solution is based on a genetic algorithm and assures a minimum operational costs regarding provisioning of new services to users.
Field-Based Coordination of Mobile Intelligent Agents: An Evolutionary Game Theoretic Analysis
Knowledge-Based Intelligent Information & Engineering Systems, 2007
The paper deals with field-based coordination of agent team in which the continental divide game ... more The paper deals with field-based coordination of agent team in which the continental divide game is applied as a coordination mechanism. The agent team consists of self-interested mobile intelligent agents whose behaviour is modelled using coordination policies based on adaptive learning algorithms. Three types of learning algorithms have been used: three parameter Roth-Erev algorithm, stateless Q-learning algorithm, and experience-weighted attraction
In the 3G mobile networks, utilization of multimedia applications on mobile/wireless devices allo... more In the 3G mobile networks, utilization of multimedia applications on mobile/wireless devices allows users to be present and communicate with other users, anywhere and anytime. Novel service provisioning models are taking into account user's behaviour, terminal equipment capabilities and the content providers. Thus, service charging schemes must be adapted to prevent the burdening of users with calculation of revenue for all the parties involved in the service provisioning process. We are proposing a system for automated business-driven service provisioning. Proof-ofconcept implementation is deployed into 3G mobile network. Based on the operator's business strategies, availability of new software/content components, user's location, equipment capabilities and the amount of money on the user's account, operators can automatically create a list of potential users for the new service.
Agent Behaviour in Double Auction Electronic Market for Communication Resources
Lecture Notes in Computer Science, 2006
The paper deals with behaviour of trading agents with the lowest level of bounded rationality on ... more The paper deals with behaviour of trading agents with the lowest level of bounded rationality on an electronic market where the double auction is applied as a trading mechanism. Two types of double auction have been considered: the clearing house and the continuous double auction. The agent behaviour is modelled using business strategies based on adaptive learning algorithms and imitation
Lecture Notes in Computer Science, 2006
Mediation between buyers (service requester's agents) and sellers (service provider's agents) is ... more Mediation between buyers (service requester's agents) and sellers (service provider's agents) is one of the most difficult problems in real electronic markets. In this paper, we propose an economic approach to solving this problem combined with AI (Artificial Intelligence) concepts. Firstly, we enable provider agents to dynamically and autonomously advertise semantic descriptions of available services by proposing a new auction model based on Pay-Per-Click advertising auctions. We call it the Semantic Pay-Per-Click Agent (SPPCA) auction. Requester agents then use two-level filtration of the advertised services to efficiently discover eligible services. In the first level of filtration, a semantic-based mechanism for matchmaking between services requested by buyers and those advertised by sellers is applied. Services which pass the first level of filtration are then considered on the second level. Here information regarding the actual performance of service providers is considered in conjunction with the prices bid by service provider's agents in the SPPCA auction. A final set of advertised services is then chosen and proposed to the buyer agent as an answer to its request.
Grid Service Management by Using Remote Maintenance Shell
Lecture Notes in Computer Science, 2004
This paper presents a method called Remote Maintenance Shell (RMS) developed for Grid service man... more This paper presents a method called Remote Maintenance Shell (RMS) developed for Grid service management. It allows service management and maintenance of several versions without suspending its regular operation. The method is based on the remote operations performed by mobile agents. The RMS prototype implemented as a multi-agent system with stationary and mobile multi-operation agents is elaborated. A case study of monitoring service managing in the Grid system is included.
This article presents semantic matchmaking of advanced personalized mobile services using intelli... more This article presents semantic matchmaking of advanced personalized mobile services using intelligent middle agents in an electronic market (e-market). The traditional telecommunication services are implemented as Web services using emerging Parlay X Web Service framework and semantically described with DARPA Agent Markup Language for Services (DAML-S) ontology. This enables us to compose advanced personalized mobile services, such as traffic management Web service, that exploit benefits of both Internet information services and traditional telecom services. Moreover, using DAML-S for semantic description of information and telecom Web services opens up exciting opportunities in the automation of matchmaking process in the e-market. We have adopted a component-based approach in building our intelligent agents responsible for semantic matchmaking of personalized mobile services. A scenario with personalized mobile Web service for traffic management in the target location shows that p...
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Book Chapters by Krunoslav Tržec
Papers by Krunoslav Tržec