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Animating 2D moving deformable objects based on complex barycentric coordinates

Journal of Information and Computational science 2011年第9期8卷 1533-1540页

作者： Deng, Zhengjie Li, Zheng Liang, Yun Su, Zhuo School of Information Science and Technology Sun Yat-sen University Guangzhou 510006 China Shenzhen Key Laboratory of Digital Living Network and Content Service Shenzhen Guangdong 518057 China Research Institute of Sun Yat-sen University in Shenzhen Shenzhen Guangdong 518057 China Faculty of Computer Guangdong University of Technology Guangzhou 510006 China College of Informatics South China Agricultural University Guangzhou 510642 China

In 2D animation processes, many simulated the movement and the deformation of a moving deformable object simultaneously. The binding of the movement and the deformation increased the complexity and restricted user's freedoms, to implement the animations. In our approach, an object's motion is decomposed into a moving component and a deforming component. The moving component can be any pre-configure rigid motion. Driven by the moving component, a static object becomes a moving object. The deforming component is a space deformation for the moving object. To full the deforming component, a novel method is derived from the space deformation method-complex barycentric coordinates. At last, the moving object driven by the deforming component is animated as the user's desire. In this way, the movement and the deformation are handled separately, which reduces the complexity and gives users more freedoms. Experimental results show that users can easily animate many kinds of moving deformable objects with our method. Copyright © 2011 Binary Information Press.

关键词： Deformation

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Comparative review study of reactive and proactive routing protocols in MANETs

Comparative review study of reactive and proactive routing p...

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2010 4th IEEE International Conference on Digital Ecosystems and Technologies, DEST 2010

作者： Mohseni, Shima Hassan, Rosilah Patel, Ahmed Razali, Rozilawati Department of Computer Science Faculty of Information Science University Kebangsaan Malaysia UKM Bangi 43600 Selangor Malaysia Network Management Research Group Malaysia

ISBN: (纸本)9781424455539

Mobile Ad Hoc networks (MANETs) are generating a lot of interests due to 3G and 4G activities. The dynamic nature of these networks demands new set of network routing strategy protocols to be implemented in order to provide efficient end-toend communication. Due to the diverse applications that use MANETs, such as battlefield, emergency services, and disaster discovery, MANETs offer many advantages to many organizations that need wireless roaming. For efficient and timely use, routing and synchronization are essential. Both are hot research topics in MANETs. This paper concentrates on routing, which is a challenging task and has seen a huge number of different strategies proposed, each claiming to provide an improvement over other strategies. These competing strategies make it quite difficult to determine which one may perform optimally under a number of different sets of network conditions as defined by their Quality of Service (QoS) offerings. This paper reviews some of the state-of-the-art and widely investigated MANET routing strategies in the literature. Moreover, a performance comparison of discussed routing protocol strategies is provided and suggestions are made to achieve improvement in performance of these protocols. This research is followed by presenting further research that will be pursued to define a radically most optimum set of strategies to satisfy different types of application domains. © 2010 IEEE.

关键词： Routing protocols

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A non-linear illuminations balancing for reconstructed degraded scanned text-photo image

A non-linear illuminations balancing for reconstructed degra...

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IEEE International Symposium on Communications and Information Technology

作者： Athimethphat, Maythapolnun Patanavijit, Vorapoj Department of Business Data Analysis Faculty of Science and Technology Assumption University Bangkok Thailand Department of Computer and Network Engineering Faculty of Engineering Assumption University Bangkok Thailand

ISBN: (纸本)9781424470105

Due to the advancement of digital media, a large number of electronic books are digitized from old paper books through digital cameras or scanners. The scanned image often contains the distractions such as noises outside the page boundary, skewed pages, and irregular distributions of image illumination that may degrade the quality of scanned images. As for this paper, we propose an alternative algorithm to improve the illuminated distribution of the scanned images. The algorithm can be applied on the uneven illumination where significant background shadows or illumination exists. It was tested with text-photo images including different types of document and desecration. The experiment results have shown that the proposed algorithm has produced a slightly improvement in performance in some cases of the text-based images, yet the improvement can be clearly seen for text-photo images as the results were compared with LLBT and SIBT methods. ©2010 IEEE.

关键词： Edge detection

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An investigation and survey of response options for Intrusion Response Systems (IRSs)

An investigation and survey of response options for Intrusio...

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Information Security for South Africa Conference

作者： Anuar, Nor Badrul Papadaki, Maria Furnell, Steve Clarke, Nathan Centre for Security Communications and Network Research University of Plymouth Plymouth United Kingdom Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur Malaysia

ISBN: (纸本)9781424454952

The rise of attacks and incidents need additional and distinct methods of response. This paper starts a discussion by differentiating the type of operation mode such as Intrusion Detection Systems (IDSs), Intrusion Prevention Systems (IPSs) and Intrusion Response Systems (IRSs). Using characteristics of response and attack time frame, a response model is proposed to distinguish between active and passive response options. The characteristics of response include level of operations, speed and time of response, ability to learn and ability to cooperate with other devices. This paper uses the attack time frame as a response model to show the relationship between active and passive response. Furthermore, the Response Model for Intrusion Response Systems shows some other different approaches and stages of active response. Finally, in order to investigate the most common response used by security practitioner and to justify the response model, studies involving 34 samples products from both commercial and non-commercial are analysed. As a result, this paper shows a clear distinction between the options of responses. ©2010 IEEE.

关键词： Intrusion detection

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Fluctuated peer selection policy and its performance in large-scale multi-agent systems

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Web Intelligence and Agent Systems 2010年第3期8卷 255-268页

作者： Sugawara, Toshiharu Fukuda, Kensuke Hirotsu, Toshio Sato, Shin-Ya Akashi, Osamu Kurihara, Satoshi Dept. of Computer Science and Engineering Waseda University Shinjuku Tokyo 169-8555 Japan National Institute of Informatics Chiyoda Tokyo 101-8430 Japan NTT Network Innovation Laboratories Musashino Tokyo 180-8585 Japan Faculty of Information Science Hosei University Koganei Tokyo 184-8584 Japan Institute of Scientific and Industrial Research Osaka University Osaka 567-0047 Japan

This paper describes how, in large-scale multi-agent systems, each agent's adaptive selection of peer agents for collaborative tasks affects the overall performance and how this performance varies with the workload of the system and with fluctuations in the agents' peer selection policies (PSP). An intelligent agent in a multi-agent system (MAS) often has to select appropriate agents to assign tasks that cannot be executed locally. These collaborating agents are usually chosen according to their skills. However, if multiple candidate peer agents still remain a more efficient agent is preferable. Of course, its efficiency is affected by the agent' workload and CPU performance and the available communication bandwidth. Unfortunately, as no agent in an open environment such as the Internet can obtain such data from any other agent, this selection must be done according to the available local information about the other known agents. However, this information is limited, usually uncertain and often obsolete. Agents' states may also change over time, so the PSP must be adaptive to some extent. We investigated how the overall performance of MAS would change under adaptive policies in which agents selects peer agents using statistical/reinforcement learning. We particularly focused on mutual interference for selection under different workloads, that is, underloaded, near-critical, and overloaded situations. This paper presents simulation results and shows that the overall performance of MAS highly depends on the workload. It is shown that when agents' workloads are near the limit of theoretical total capability, a greedy PSP degrades the overall performance, even after a sufficient learning time, but that a PSP with a little fluctuation, called fluctuated PSP, can considerably improve it. © 2010 - IOS Press and the authors. All rights reserved.

关键词： Multi agent systems

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Comparative review study of reactive and proactive routing protocols in MANETs

Comparative review study of reactive and proactive routing p...

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Inaugural IEEE-IES Digital EcoSystems and Technologies Conference, DEST

作者： Shima Mohseni Rosilah Hassan Ahmed Patel Rozilawati Razali Department of Computer Science Faculty of Information Science Network Management Research Group Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan Malaysia

Mobile Ad Hoc networks (MANETs) are generating a lot of interests due to 3G and 4G activities. The dynamic nature of these networks demands new set of network routing strategy protocols to be implemented in order to provide efficient end-to-end communication. Due to the diverse applications that use MANETs, such as battlefield, emergency services, and disaster discovery, MANETs offer many advantages to many organizations that need wireless roaming. For efficient and timely use, routing and synchronization are essential. Both are hot research topics in MANETs. This paper concentrates on routing, which is a challenging task and has seen a huge number of different strategies proposed, each claiming to provide an improvement over other strategies. These competing strategies make it quite difficult to determine which one may perform optimally under a number of different sets of network conditions as defined by their Quality of Service (QoS) offerings. This paper reviews some of the state-of-the-art and widely investigated MANET routing strategies in the literature. Moreover, a performance comparison of discussed routing protocol strategies is provided and suggestions are made to achieve improvement in performance of these protocols. This research is followed by presenting further research that will be pursued to define a radically most optimum set of strategies to satisfy different types of application domains.

关键词： Routing protocols Routing Ad hoc networks Mobile computing Measurement Quality of service

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Throughput analysis of airport resources

Throughput analysis of airport resources

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2010 Huntsville Simulation Conference, HSC 2010

作者： Moeller, Dietmar P.F. Leder, Soeren Wittmann, Jochen Schroer, Bernard Harris, Gregory University of Hamburg MIN Faculty Department Computer Science Vogt-Koelln-Str. 30 D. 22527 Hamburg Germany HTW Berlin Germany Center for Management and Economic Research Alabama Technology Network University of Alabama Huntsville AL United States

ISBN: (纸本)9781617823169

This paper presents an approach to determine the impact on throughput on airport resources in relation with operating procedures at airports. Due to time and cost constraints, identification of shortages on airport resources is not a trivial task. Identification and elimination of shortages at airports deals with discovering dependencies within a sequence of actions, and with the dependencies through which the different components are conditional with their related actions. Identifying of shortages at airports is of great value due to its immense impact in determining the throughput on airport resources depending on the overall operation of the airport.

关键词： Airports

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A hierarchical cluster based preprocessing methodology for Web Usage Mining

A hierarchical cluster based preprocessing methodology for W...

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International Conference on Advanced Information Management and Service

作者： Tasawar Hussain Sohail Asghar Simon Fong Center of Research in Data Engineering (CORDE) Faculty of Engineering and Applied Sciences Mohammad Ali Jinnah University Islamabad Pakistan Department of Computer and Information Science Faculty of Science and Technology University of Macau Macao China

In Web Usage Mining (WUM), web session clustering plays a key role to classify web visitors on the basis of user click history and similarity measure. Swarm based web session clustering helps in many ways to manage the web resources effectively such as web personalization, schema modification, website modification and web server performance. In this paper, we propose a framework for web session clustering at preprocessing level of web usage mining. The framework will cover the data preprocessing steps to prepare the web log data and convert the categorical web log data into numerical data. A session vector is obtained, so that appropriate similarity and swarm optimization could be applied to cluster the web log data. The hierarchical cluster based approach will enhance the existing web session techniques for more structured information about the user sessions.

关键词： Clustering algorithms data mining Cleaning Euclidean distance IP networks Particle swarm optimization Filtering algorithms

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Hiding sensitive association rules using central tendency

Hiding sensitive association rules using central tendency

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International Conference on Advanced Information Management and Service

作者： Muhammad Naeem Sohail Asghar Simon Fong Center of Research in Data Engineering (CORDE) Mohammad Ali Jinnah University Islamabad Pakistan Department of Computer and Info. Science Faculty of Science and Technology University of Macau Macao China

Privacy Preserving in data Mining (PPDM) is a process by which certain sensitive information is hidden during data mining without precise access to original dataset. Majority of the techniques proposed in the literature for hiding sensitive information are based on using Support and Confidence measures in the association rules, which suffer from limitations. In this paper we propose a novel architecture which acquired other standard statistical measures instead of conventional framework of Support and Confidence to generate association rules. Specifically a weighing mechanism based on central tendency is introduced. The proposed architecture is tested with UCI datasets to hide the sensitive association rules as experimental evaluation. A performance comparison is made between the new technique and the existing one. The new architecture generates no ghost rules with complete avoidance of failure in hiding sensitive association rules. We demonstrate that Support and Confidence are not the only measures in hiding sensitive association rules. This research is aimed to contribute to data mining areas where privacy preservation is a concern.

关键词： Association rules Equations Mathematical model Algorithm design and analysis Itemsets

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Hiding sensitive XML Association Rules via Bayesian network

Hiding sensitive XML Association Rules via Bayesian network

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International Conference on Advanced Information Management and Service

作者： Khalid Iqbal Sohail Asghar Simon Fong Department of Computer Science Shaheed Zulfikar Ali Bhutto Institute of Science and Technology Islamabad Pakistan Center of Research in Data Engineering (CORDE) Mohammad Ali Jinnah University Islamabad Pakistan Department of Computer and Information Science Faculty of Science and Technology University of Macau Macao China

Privacy Preserving data Mining (PPDM) is receiving a lot of attention recently by researchers from multiple domains, especially in Association Rule Mining. The outputs of Association Rule Mining often involve values of attributes that can be used to characterize the identities of the users. The relations between antecedents and consequents are also explicitly displayed. The purpose of preserving association rules is to minimize the risk of disclosing sensitive information to external parties. In this paper, we proposed a PPDM model for XML Association Rules (XARs). The proposed model identifies the most probable items called `sensitive items', and to modify their original data sources, so that the resultant XARs can have higher accuracy and stronger reliability. Such reliability is not addressed before in the literature in any kind of methodology used in PPDM domain and especially in XML association rules mining. Thus, the significance of the suggested model sets to open a new research dimension to the academia in order to control the sensitive information in a more unyielding line of attack.

关键词： Association rules XML Itemsets Reliability Bayesian methods

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