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An Investigation of the Hoeffding Adaptive Tree for the Problem of Network Intrusion Detection

An Investigation of the Hoeffding Adaptive Tree for the Prob...

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International Joint Conference on Neural Networks

作者： Diego Guarnieri Corrêa Fabrício Enembreck Carlos N. Silla Graduate Program in Informatics (PPGI) - Federal University of Technology of Paraná (UTFPR) Cornélio Procópio PR Brazil 86300-000 Graduate Program in Computer Science (PPGIa) - Pontifical Catholic University of Paraná (PUCPR) Curitiba PR Brazil 80215-901

ISBN: (纸本)9781509061839

Intrusion detection in computer networks is a important topic in information security. Due to numerous cases of security breaches that caused economic and social losses in recent years, this topic has been the subject of several studies in order to mitigate problems related to network intrusion and computer attacks. Information security systems have been using different techniques for network intrusion detection. However, with the development of communication mechanisms and consequently with the increase in data traffic, some techniques used for intrusion detection lost their information processing capability. The emergence of new forms of attacks on computer systems also contribute to the depreciation of some of the existing tools. In this scenario, new techniques capable of processing large amounts of information and that perform proactive discovery of new attack vectors are necessary. This paper presents a study on the use of a data stream mining technique known as Hoeffding Adaptive Tree to create a predictive model for network intrusion detection. The experiments performed in this work show the effectiveness of this technique when applied to a database of computer network attacks.

关键词： Intrusion detection Data mining Tools computers Databases Prediction algorithms Adaptation models

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Teaching genetic algorithm-based parameter optimization using Pacman

Teaching genetic algorithm-based parameter optimization usin...

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Frontiers in Education (FIE) Conference

作者： Carlos N. Silla Graduate Program in Computer Science (PPGIa) Pontifical Catholic University of Paraná (PUCPR) Curitiba PR Brazil

ISBN: (纸本)9781509017911

Previous artificial intelligence education research (DeNero and Klein, 2010) has used the classic video game Pacman to teach introductory artificial intelligence concepts. One of the advantages of the work proposed in (DeNero and Klein, 2010) is that the same framework, in this case using the video game Pacman, can be used for different student assignments covering different artificial intelligence algorithms and methods. The issue of how to use the same practical framework is an important one, because if students have to learn a different framework for every assignment they will often feel discouraged. For this reason, the main contribution of this paper is to present a practical assignment to teach students about genetic algorithm-based parameter optimization using the Pacman framework.

关键词： Artificial intelligence Sociology Statistics Optimization Manuals

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Music education meets computer science and engineering education

Music education meets computer science and engineering educa...

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Frontiers in Education (FIE) Conference

作者： Carlos N. Silla André L. Przybysz Wellington V. Leal Graduate Program in Computer Science (PPGIa) Pontifical Catholic University of Paraná (PUCPR) Curitiba PR Brazil Federal University of Technology of Paraná (UTFPR) PR Brazil

ISBN: (纸本)9781509017911

This paper presents a novel interdisciplinary approach to aid with the growing concern about how to showcase computer science and engineering degrees to pre-university level students. This novel approach is based on empowering students to create their own music-related game using real music instruments. In order to allow the students to program their games we have used the Greenfoot Introductory Learning Environment to teach object-oriented programming skills with the java programming language. We have also taught the students music theory and practice. All these skills were required to allow the students to successfully develop their musical games that interact with the music instruments.

关键词： Instruments Games computers Music programming Education

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An Evaluation of Different Evolutionary Approaches Applied in the Process of Automatic Transcription of Music Scores into Tablatures

An Evaluation of Different Evolutionary Approaches Applied i...

引用

International Conference on Tools for Artificial Intelligence (ICTAI)

作者： João Victor Ramos André Stylianos Ramos Carlos N. Silla Danilo Sipoli Sanches Federal University of Technology of Paraná (UTFPR) Cornélio Procópio PR Brazil Computer Music Technology Laboratory - Graduate Program in Computer Science (PPGIa) Pontifical Catholic University of Parana (PUCPR) Curitiba PR Brazil

The problem of converting a music in standard music notation (music sheet) to the alternative notation of guitar tablature is known as transcription. The process of transcription consists of indicating where each note from the original music sheet needs to be played in the guitar, i.e. which string and fret of the guitar that needs to be played to produce a particular note. However, considering that each note can be played in different positions of the guitar fretboard, this is not a straightforward process, and can be classified as a combinatorial optimization problem. For this reason, we have employed a comparative study of different algorithms: A-star, genetic algorithms (GA), genetic algorithms based on subpopulations (GA-SP), ant colony optimization (ACO) and differential evolution (DE). It was also included heuristics based on local search 2-opt and 3-opt in the approaches GA, GA-SP and DE. The experimental results with a dataset of 87 musics indicated that the approaches ACO, GA-SP with 2-opt and GA with 2-opt reached the best performance. Also, the results obtained with each approach were statistically compared using ANOVA test with post hoc Tukey.

关键词： Genetic algorithms Music Optimization Standards Analysis of variance Conferences Artificial intelligence

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jOthelloT: A java-based open source Othello framework for artificial intelligence undergraduate classes

jOthelloT: A java-based open source Othello framework for ar...

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Frontiers in Education (FIE) Conference

作者： Carlos N. Silla Marcelo Paglioney Iuri G. P. Mardegany Graduate Program in Computer Science (PPGIa) Pontifical Catholic University of Paraná (PUCPR) Curitiba PR Brazil Federal University of Technology of Paraná (UTFPR) - Cornélio Procópio Brazil 86300-000

ISBN: (纸本)9781509017911

Introductory artificial intelligence undergraduate classes often introduce different search methods using different search algorithms. In this context one of algorithms that is often taught, is the minimax algorithm which is used in adversarial games where you want to minimize your opponent's chance of winning while maximizing your chance of winning. Different instructors use different games to make the students implement the minimax algorithm such as Checkers, Othello or Chess. However, one common problem with this assignment is that the students often spend more time implementing the game itself rather than the artificial intelligence techniques in the game. For this reason, in this paper we present a Java-based open source Othello framework that was designed to be used in artificial intelligence undergraduate classes. Our framework has several features that help the students to focus on the development of the artificial intelligence aspects of the game, rather than developing the game itself. One particular feature of the framework is that it has a method that returns the list of valid moves given the current state of the game board and which player is going to make the next move. With this method, the students can focus on how to evaluate the different states using several heuristic functions and implementing the minimax algorithm. Another feature of the framework is the graphical user interface and the HumanPlayer class that allows the students to play against their own code. This feature is important as it allows the students to not only debug their codes but also to evaluate the effectiveness of their implemented heuristics. Another aspect of the framework is that it allows to set up a tournament of the codes developed by the students. The tournament can be organized in two modes. In the first mode every AI developed by one student plays against the AI developed by every other student. In the second mode, each student developed code is paired against another

关键词： Java

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Managing distributed UCONabc policies with authorization assertions and policy templates 20

Managing distributed UCONabc policies with authorization ass...

引用

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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A Strategy for Data Replication in Mobile Ad Hoc Networks

A Strategy for Data Replication in Mobile Ad Hoc Networks

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International Symposium on Modeling, Analysis and Simulation of computer and Telecommunication Systems (MASCOTS)

作者： Gisane Aparecida Michelon Luiz A.P. Lima Jose Aelio De Oliveira Alcides Calsavara Gil E. De Andrade Graduate Program on Computer Science (PPGIA) Pontificia Universidade CatOlica do Parana Curitiba Brazil Grad. Program on Comput. Sci. (PPGIa) Pontificia Universidade Catolica do Parana Curitiba PR BR

This paper addresses the problem of data replication in MANETs (Mobile Ad hoc Network) presenting a new solution that improves the performance of data access in such networks. To make the data available to the user at any place and any time, several issues related to the dynamics of MANETs need to be considered, particularly the node's mobility and limited computing resources. The development of methods for data replication in this context represents, therefore, a major challenge, because a series of application-dependent requirements must be handled in a transparent and adaptive manner. One way to tackle this is through an application-level message forwarding mechanism using Virtual Magnetic Fields. In systems where fault tolerance is implemented through data replication, we show that the use of virtual magnetic fields provides an adequate paradigm in the context of dynamic factors that would influence the decision of which network nodes will keep replicas of data.

关键词： Mobile computing Magnetic fields Mobile ad hoc networks Context Network topology Complexity theory

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Delay tolerant transport protocol - DTTP

Delay tolerant transport protocol - DTTP

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International Global Information Infrastructure Symposium (GIIS)

作者： Fabio Luiz P. Albini Anelise Munaretto Mauro Fonseca Graduate School of Electrical Engineering and Computer Science (CPGEI) Federal Technological University of Parana (UTFPR) Curitiba Brazil Postgraduate Program in Computer Science (PPGIa) Pontifical Catholic University of Parana (PUCPR) Curitiba Brazil

This paper consists in a novel transport protocol description for Delay-Tolerant Networks and Disruption Tolerant Networks (both DTN). This protocol was designed to offer a better information delivery rate in DTNs scenarios. Fountain codes techniques are used to achieve our needs. The performance results were tested taking into account the hosts buffer size, the TTL (Time To Live) of the messages and the amount of redundant information generated into the network. A better delivery rate and performance were achieved using the proposed protocol.

关键词： Transport protocols Data models Delay Error correction codes Educational institutions Process control

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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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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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