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Implementing a peer-to-peer web browser for publishing and searching web pages on Internet

Implementing a peer-to-peer web browser for publishing and s...

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21st International Conference on Advanced Networking and Applications

作者： Ribeiro, Heverson Borba Lung, Lau Cheuk Santin, Altair Olivo Brisola, Neander Larsen Graduate Program in Applied Computer Science (PPGIa) Pontifical Catholic University of Paraná(PUCPR) Brazil

ISBN: (纸本)9780769528465

This paper presents an implementation of a P2P Web Browser, called We2Peer(1), for publishing web pages on internet through peer-to-peer networks. The present proposal overcomes the problems involving entities dependency and content availability, by the user side, changing the conventional way used to publish web pages on Internet The proposed solution allows anyone who has a computer connected to the Internet, even through domestic ADSL connection, to publish web pages on their own machines. By using a peer-to-peer web browser another mechanism for searching web pages is offered based on DHT (Distributed Hash Tables). The user interface, provided by Web2Peer, carries all functions needed for creating, editing, publishing, searching, downloading and replicating the web pages on the peer-to-peer network.

关键词： Web browsers

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A reflexive infrastructure for context-aware applications

A reflexive infrastructure for context-aware applications

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3rd International Conference on Mobile Ubiquitous Computing, Systems, Services, and Technologies, UBICOMM 2009

作者： Tosin, Carlos Eduardo Lima Jr., Luiz Graduate Program on Computer Science - PPGIa Pontifical Catholic University of Paraná Curitiba Brazil

ISBN: (纸本)9780769538341

Context-aware applications use information from their surrounding environment to adapt their behavior. This paper proposes a reflexive, loose-coupled, event-based infrastructure named CxFramework to aid the development of such complex applications. CxFramework is composed of several kinds of services. Context information is modeled using ontologies from which higher-level context information can be inferred. The details of context acquisition and processing are transparent to the developer. Implementation aspects of the prototype are discussed and a performance analysis is presented to show its viability. © 2009 IEEE.

关键词： Ubiquitous computing

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Detecting drifts in multi-issue negotiations

Detecting drifts in multi-issue negotiations

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12th Ibero-American Conference on Advances in Artificial Intelligence, AI 2010

作者： Nalepa, Gislaine M. Ávila, Bráulio C. Enembreck, Fabrício Scalabrin, Edson E. PUCPR Pontifical Catholic University of Paraná PPGIA Graduate Program on Applied Computer Science R. Imaculada Conceição 1155 Curitiba PR Brazil

ISBN: (纸本)3642169511

In an automated negotiation process, it is usual for one party not to reveal their preferences to its opponent. In an attempt to adjust itself to this process, each trade agent can be endowed with capabilities of learning and detecting its opponent's changing preferences. This paper presents techniques for drift detection that are useful in this scenario: the Instance-Based Learning algorithms (IB1, IB2 and IB3) and the Bayesian Networks. Theoretically, a group of expert agents is able to achieve better results than an individual, therefore, the DWM is part of these studies, once it provides an effective strategy for integrating the decision of several expert agents. The experiments performed revolve around the settings DWM-IB3 and DWM-Bayesian Network. The performance of each system was evaluated for gradual, moderate and abrubt drifts in concept, and the results showed that both settings are able to efficiently detect drifts in the preferences of the opponent. © 2010 Springer-Verlag.

关键词： Bayesian networks

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Multiagent-based model integration

Multiagent-based model integration

引用

2006 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology

作者： De Paula, Ana Carolina M. Pilatti Ávila, Bráulio C. Scalabrin, Edson Enembreck, Fabrício Pontifical Catholic University of Paraná - PUCPR Graduate Program in Applied Computer Science - PPGIA Rua Imaculada Conceicao 1155 CEP 80.215-901 Curitiba PR Brazil

ISBN: (纸本)0769527493

This paper presents a Distributed Data Mining technique based on a multiagent environment, called SMAMDD (MultiAgent System for Distributed Data Mining), which uses model integration. Model Integration consists in the amalgamation of local models into a global, consistent one. In each subset, agents perform mining tasks locally and, afterwards, results are merged into a global model. In order to achieve that, agents cooperate by exchanging messages, aiming to improve the process of knowledge discover generating accurate results. The multiagent system for Distributed Data Mining proposed in this paper has been compared with classical machine learning algorithms which are based on model integration as well, simulating a distributed environment. The results obtained show that SMAMDD can produce highly accurate data models. © 2006 IEEE.

关键词： Multi agent systems

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A strategy for converging dynamic action policies

A strategy for converging dynamic action policies

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IEEE Symposium on Intelligent Agents, IA

作者： Richardson Ribeiro Andre P. Borges Alessandro L. Koerich Edson E. Scalabrin Fabricio Enembreck Graduate Program in Computer Science (PPGIa) University of Contestado Mafra Santa Catarina Brazil Graduate Program in Computer Science (PPGIa) Pontifical Catholic University of Paraná Curitiba Parana Brazil

In this paper we propose a novel strategy for converging dynamic policies generated by adaptive agents, which receive and accumulate rewards for their actions. The goal of the proposed strategy is to speed up the convergence of such agents to a good policy in dynamic environments. Since it is difficult to have the good value for a state due to the continuous changing in the environment, previous policies are kept in memory for reuse in future policies, avoiding delays or unexpected speedups in the agent's learning. Experimental results on dynamic environments with different policies have shown that the proposed strategy is able to speed up the convergence of the agent while achieving good action policies.

关键词： Convergence computer science Delay Learning Decision making Stochastic processes State estimation

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Managing distributed UCONabc policies with authorization assertions and policy templates 20

Managing distributed UCONabc policies with authorization ass...

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20th IEEE Symposium on computers and Communication, ISCC 2015

作者： Stihler, Maicon Santin, Altair O. Marcon, Arlindo L. Federal Center for Technological Education-CEFET-MG Department of Computing and Mechanics LeopoldinaMG Brazil Pontifical Catholic University of Parana-PUCPR Graduate Program on Computer Science-PPGIa CuritibaPR Brazil

ISBN: (纸本)9781467371940

Managing UCONabc policies in modern distributed computing systems is a challenge for traditional approaches. The provisioning model has trouble to keep track and to synchronize large numbers of distributed policies, outsourcing model may suffer from network overhead and single point of failure. This paper describes an approach to manage distributed UCONabc policies, derived from the combination of authorization assertions and policy templates. It combines the benefits of provisioning and outsourcing, eliminating their respective drawbacks. Prototyping details and performance evaluation are shown, messages are 42.7% smaller than provisioning and response times are faster than outsourcing. © 2015 IEEE.

关键词： Outsourcing

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Railroad Driving Model Based on Distributed Constraint Optimization

Railroad Driving Model Based on Distributed Constraint Optim...

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IEEE WIC ACM International Conference on Web Intelligence (WI)

作者： Allan Rodrigo Leite Bruno Giacomet Fabrício Enembreck Graduate Program on Computer Science (PPGIa) Pontifical Catholic University of Paraná Brazil

Distributed Constraint Optimization Problems (DCOP) has emerged as one of the most important multiagent coordination techniques, due to its ability to optimize the global function modeled as a set of constraints. This paper presents a study that proposes to use of distributed constraint optimization techniques to achieve energetic efficiency on railroad driving. The objectives are to present a real world problem with dynamic behavior as a DCOP, compare the main algorithms for this formalism and evaluate the quality of the solutions obtained.

关键词： Constraint optimization Intelligent agent Cost function Multiagent systems Power system modeling Conferences computer science Railway safety Dynamic programming Protocols

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Towards Real-time Video Content Detection in Resource Constrained Devices

Towards Real-time Video Content Detection in Resource Constr...

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International Joint Conference on Neural Networks (IJCNN)

作者： Jhonatan Geremias Altair O. Santin Eduardo K. Viegas Alceu S. Britto Graduate Program in Computer Science - PPGIa Pontifical Catholic University of Parana Curitiba Brazil

ISBN: (数字)9781728169262

ISBN: (纸本)9781728169279

Convolutional neural networks have been successfully applied for video content detection in the last years. However, such cognitive models usually demand the availability of several gigabytes of memory and present a low detection throughput, as a result, they are not feasible for resource-constrained devices, especially for real-time applications like video streaming. In this paper, we address real-time video content detection in resource-constrained devices in a threefold manner. First, we improve detection throughput by means of a frame sampling technique. Then, we propose a new evaluation measure towards proper deployment of convolutional neural networks in resource-constrained devices. Finally, we address the accuracy degradation caused by the porting of the convolutional neural network, applying a lightweight classification verification technique. The evaluation results, through a real-time demanding application, show that the proposed approach can detect up to 301 frames/sec, demanding only 9 megabytes of memory while reaching up to 89.3% of accuracy. Besides, we can increase the detection throughput by up to 10 times, with no effects on accuracy, and further increase accuracy without effects on processing demands.

关键词： Streaming media Throughput Real-time systems computer architecture Task analysis Feature extraction Performance evaluation

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A Reflexive Infrastructure for Context-Aware Applications

A Reflexive Infrastructure for Context-Aware Applications

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International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies (UBICOMM)

作者： Carlos Eduardo Tosin Luiz Lima Jr. Graduate Program on Computer Science PPGIa Pontifical Catholic University of Paraná Curitiba Brazil

关键词： Ontologies Context-aware services Context modeling Intelligent sensors Application software Object oriented modeling Ubiquitous computing computer science Performance analysis Context awareness

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SP2MS: A MANet-Based P2P Service

SP2MS: A MANet-Based P2P Service

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International Conference on Advanced Information Networking and Applications Workshops (AINAW)

作者： Marcelo H. Vithoft Altair O. Santin Cinthia O. Freitas Heverson B. Ribeiro Graduate Program in Computer Science PPGIa Pontifical Catholic University of Paraná Curitiba Parana Brazil

Applications using P2P as an Overlay network in MANet (P2M) are very unstable in terms of MANet interconnections and P2P churn. MANet-based P2P applications usually create a considerable overhead on the P2P consumer due to the control of the end-to-end communication with the peer that provides the shared content. Moreover, traditional P2P networks offer polluted contents wasting the device's scarce resources. This paper proposes a service that minimizes the P2M environment instabilities for mobile devices and reduces the probability of downloading corrupt contents. A prototype was developed to show that SP2MS can be easily integrated into the traditional P2P infrastructure.

关键词： Peer to peer computing Application software Mobile communication Pollution Prototypes Mobile ad hoc networks Proposals Broadcasting Conferences computer science

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