719 research outputs found
Configuration of distributed message converter systems
No full textFinding a configuration of a distributed system satisfying performance goals is a complex search problem that involves many design parameters, like hardware selection, job distribution and process configuration. Performance models are a powerful tool to analyze potential system configurations, however, their evaluation is expensive, such that only a limited number of possible configurations can be evaluated. In this paper we present a systematic method to find a satisfactory configuration with feasible effort, based on a two-step approach. First, performing a queuing network analysis a hardware configuration is determined and then a software configuration is incrementally optimized by simulating Layered Queuing Network models. We applied this method to the design of performant EDI converter systems in the financial domain, where increasing message volumes need to be handled due to the growing importance of B2B interaction
1. International symposium on data-driven process discovery and analysis : SIMPDA 2011 : june 28-july 1, 2011, Campione d’Italia, Italy : [proceedings]
No full textAgents and Peer-to-Peer Computing, Third International Workshop, AP2PC 2004, New York, USA, Revised and Invited Papers, Springer LNAI 3601
No full textPeer-to-peer (P2P) computing is attracting enormous media attention, spurred by
the popularity of file sharing systems such as Napster, Gnutella, and Morpheus.
The peers are autonomous, or as some call them, first-class citizens. P2P networks
are emerging as a new distributed computing paradigm for their potential to
harness the computing power of the hosts composing the network and make
their under-utilized resources available to others.Although researchers working
on distributed computing,multiagent systems, databases and networks have been
using similar concepts for a long time, it is only recently that papers motivated by
the current P2P paradigm have started appearing in high-quality conferences and
workshops. Research in agent systems in particular appears to be most relevant
because, since their inception,multiagent systems have always been thought of as
networks of peers. The multiagent paradigm can thus be superimposed on the
P2P architecture, where agents embody the description of the task environments,
the decision-support capabilities, the collective behavior, and the interaction
protocols of each peer. The emphasis in this context on decentralization, user
autonomy, ease and speed of growth that gives P2P its advantages also leads to
significant potential problems.Most prominent among these problems are
coordination, the ability of an agent to make decisions on its own actions in the
context of activities of other agents, and scalability, the value of the P2P systems
lies in how well they scale along several dimensions, including complexity,
heterogeneity of peers, robustness, traffic redistribution, and so on.
This volume presents the fully revised papers presented at the Third International
Workshop on Agents and Peer-to-Peer Computing, AP2PC 2004, held in New York
City on July 19, 2004 in the context of the Third International Joint Conference on
Autonomous Agents and Multi-Agent Systems (AAMAS 2004). The volume is
organized in topical sections on P2P networks and search performance, emergent
communities and social behaviours, semantic integration, mobile P2P systems,
adaptive systems, agent-based resource discovery, as well as trust and reputation
Agents and Peer-to-Peer Computing, Third International Workshop, AP2PC, 2004, New York, USA
No full textIn P2P systems, peer and web services in the role of resources become shared and combined to enable new capabilities greater than the sum of the parts. This means that services can be developed and treated as pools of methods that can be composed dynamically. The decentralized nature of P2P computing makes it also ideal for economic environments that foster knowledge sharing and collaboration as well as cooperative and non-cooperative behaviors in sharing resources. Business models are being developed, which rely on incentive mechanisms to supply contributions to the system and methods for controlling free riding. Clearly, the growth and the management of P2P networks must be regulated to ensure adequate compensation of content and/or service providers. At the same time, there is also a need to ensure equitable distribution of content and services.
This workshop brings together researchers working on agent systems and P2P computing with the intention of strengthening this connection and cope with the above mentioned issues.
http://p2p.ingce.unibo.it/200
Message from IEEE TPS 2020 general chairs and PC chairs: TPS-ISA 2021
No full textRecent advances in computing and information technologies such as IoT, mobile/edge/cloud computing, cyber-physical-social systems, and artificial intelligence/machine learning/deep learning have paved way for creating next generation smart and intelligent systems and applications that can have transformative impact in our society while accelerating rapid scientific discoveries and innovations. Such newer technologies and paradigms are getting increasingly embedded in the computing platforms and networked information systems/infrastructures that form the digital foundation for our personal, organizational, and social processes and activities. It is increasingly becoming critical that the trust, privacy, and security issues in such digital environments are holistically addressed to ensure the safety and well-being of individuals as well as our society
Aberer: Towards Peer-To-Peer Double Auctioning
No full textP2P systems constitute nowadays an increasingly important part of the online world that needs or will soon need all kinds of e-commerce services and applications that are normally available today on client-server platforms. When designing new e-commerce solutions in P2P particular attention must be paid to masking autonomy of the peers and the lack of any central authorities as two most important problems. In this paper we explore possibilities to bring e-commerce into P2P and propose a double auctioning mechanism that does not rely on the existence of central authorities, auctioneer in particular, and is amenable to implementation in P2P environments. The mechanism has good economic properties such as, for example, fast convergence towards efficient trading through intuitive and simple bidding strategies.
Semantic data management (Dagstuhl Seminar 12171)
No full textThis report documents the program and the outcomes of Dagstuhl Seminar 12171 "Semantic Data Management". The purpose of the seminar was to have a fruitful exchange of ideas between the semantic web, database systems and information retrieval communities, organised across four main themes: scalability, provenance, dynamicity and search. Relevant key questions cutting across all of these themes were: (i) how can existing DB and IR solutions be adapted to manage semantic data; and (ii) are there new challenges that arise for the DB and IR communities (i.e. are radically new techniques required)? The outcome was a deeper, more integrated understanding of the current state of the art on semantic data management and a the identification of a set of open challenges that will inform the three communities in this intersection
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