ppxscal/embedding_network huggingface dataset:
RLTE: Reinforcement Learning for Traffic-Engineering
Authors: Erik Einhorn, Andreas Mitschele-Thiel
Venue: Proceedings of the 2nd international conference on Autonomous Infrastructure, Management and Security: Resilient Networks and Services (2008)

Quality of service (QoS) is gaining more and more importance in today's networks. We present a fully decentralized and self-organizing approach for QoS routing and Traffic Engineering in connection oriented networks, e.g. MPLS networks. Based on reinforcement learning the algorithm learns the optimal routing policy for incoming connection requests while minimizing the blocking probability. In contrast to other approaches our method does not rely on predefined paths or LSPs and is able to optimize the network utilization in the presence of multiple QoS restrictions like bandwidth and delay. Moreover, no additional signaling overhead is required. Using an adaptive neural vector quantization technique for clustering the state space a considerable speed-up of learning the routing policy can be achieved. In different experiments we are able to show that our approach performs better than classical approaches like Widest Shortest Path routing (WSP).
Rate Estimation of RD Optimization for Intra Mode Decision of H.264/AVC
Authors: Yan Zhuang, Takeshi Ikenaga, Satoshi Goto
Venue: Proceedings of the 2008 Congress on Image and Signal Processing, Vol. 2 - Volume 02 (2008)

H.264 is the latest international video coding standard. It is a joint work by the ITUT Video Coding Experts Group and the ISO/IEC Moving Picture Experts Group. H.264 contains a number of new features which make it compress video sequences much more effectively than previous standards and can provide more flexibility for application to a wide variety of network environments. But the H.264 standard also brings much more computations, especially when the rate-distortion optimization function is on. In order to reduce the complexity of rate-distortion cost of the rate part, we propose al rate estimation methods to avoid doing the real entropy coding method. The estimation method proposed is based on the notification of CAVLC tables, and is changed adaptively according to total_coeff. The final result shows that the proposed estimation method can reduce the encoding computation by 50% through the intra coding with ignorable degradation of coding performance.
Diffusion barrier properties of TaNx films prepared by plasma enhanced atomic layer deposition from PDMAT with N2 or NH3 plasma
Authors: Qi Xie, Jan Musschoot, Christophe Detavernier, Davy Deduytsche, Roland L Van Meirhaeghe, Sven Van den Berghe, Yu-Long Jiang, Guo-Ping Ru, Bing-Zong Li, Xin-Ping Qu
Venue: Microelectronic Engineering (2008)

Carbon free TaN"x films were deposited by plasma enhanced atomic layer deposition (PEALD) using a combination of pentakis(dimethylamino)Ta (PDMAT) and either N"2 or NH"3 plasma. Good linearity and saturation behavior were observed for the TaN"x films grown with NH"3 plasma while non-ideal saturation features were observed for the films grown with N"2 plasma. The thermal stability of the TaN"x films could be improved by reducing the pressure of the reactants and by increasing the plasma exposure time. The TaN"x films deposited using N"2 plasma exhibit better diffusion barrier properties than the films deposited using NH"3 plasma.
Dynamic Meta-level Access Control in SQL
Authors: Steve Barker
Venue: Proceeedings of the 22nd annual IFIP WG 11.3 working conference on Data and Applications Security (2008)

Standard SQL is insufficiently expressive for representing many access control policies that are needed in practice. Nevertheless, we show how rich forms of access control policies can be defined within SQL when small amounts of contextual information are available to query evaluators. Rather than the standard, relational structure perspective that has been adopted for fine-grained access control, we consider instead the representation of dynamic fine-grained access control (DFMAC) policy requirements at the access policy level. We also show how DFMAC policies may be represented in SQL and we give some performance results for an implementation of our approach.
Sensation seeking and e-shoppers
Authors: Jesús Manuel López-Bonilla, Luis Miguel López-Bonilla
Venue: Electronic Commerce Research (2008)

The concept of sensation seeking has been extensively researched. However, a few studies have been carried out on the relationship between sensation seeking and e-commerce. More specifically, it studied the purchase of leisure products, which usually have a higher frequency of purchase on the Internet. With this in mind, the Brief Sensation Seeking Scale (BSSS) created by Hoyle et al. (Pers. Individ. Differ. 32:401---414, 2002) is used, which adapts items from the SSS-V (Zuckerman et al., J. Consult. Clin. Psychol. 46:139---149, 1978). The results, based on a sample of 393 participants, explain that significant differences exist between e-shoppers and non-e-shoppers of leisure products with respect to the subscale of thrill and adventure seeking. Also, it is observed that there are significant differences between shoppers and non-shoppers only with women.
WOD --- Proxy-Based Web Object Delivery Service
Authors: Kai-Hsiang Yang, Jan-Ming Ho
Venue: Proceedings of the 3rd Asian conference on Internet Engineering: Sustainable Internet (2007)

With the tremendous growth of World Wide Web (WWW), the door has been opened to a multitude of services and information for even the most casual of users. Today, many wireless and mobile devices are being produced to provide access to this information, and the capabilities of these devices can vary depending on characteristics such as physical memory, storage space, and network speed. In the future, it is expected to see a rich variety of devices that can browse the WWW, and any given user is likely to own more than one type. When a user browses the WWW by small handy devices, such as PDAs or mobile phones with low network bandwidth, the storage space limitation and long download time make a user unable to download large-size web objects such as software zip files. One possible solution is for the user to memorize the URL of the desired web object, and download it when he reaches his home or office computer, but this is extremely inconvenient, and in most cases highly impractical. In this paper, we propose that using a proxy-based web object delivery system is a much more convenient and efficient solution. The proposed system is actually an HTTP proxy server that automatically checks all the requested web objects according to user-defined rules. If one or more rules are found to match, and the web object needs to be delivered to the user's account, the proposed system does some translations for the web object depending on its Content Type, and then delivers it via the Simple Mail Transfer Protocol (SMTP) or File Transfer Protocol (FTP). Users need merely set up the rules, and the web objects can proceed to be sent to their email or ftp site. There it can be downloaded at the user's leisure in high speed network environments such as at home or at one's office. In addition, a scheduling mechanism has been designed in order to enhance performance and improve the quality of service (QoS) for the users. We have tested the proposed system on the Windows platform, and have also evaluated it by a Pocket PC emulator.
Plenary lecture V: predictive control strategies for image based visual servoing of robot manipulators
Authors: Corneliu Lazar
Venue: Proceedings of the 9th WSEAS International Conference on International Conference on Automation and Information (2008)

There is significant motivation to provide robot manipulators with improved autonomy using image based visual servo (IBVS) control. In classical approach, an image Jacobian matrix maps image space errors into errors in Cartesian space. Then, a simple proportional control law can be applied guaranteeing local convergence to a desired set point. This control strategy can not deal with delays due to image acquisition and processing and nonlinear constraints such as joint limits and actuator saturation or visibility constraint. In this paper, an IBVS control architecture based on model predictive control (MPC) is presented considering the direct dynamic model of the robot as a Virtual Cartesian Motion Device (VCMD), its joint and torque limits, the camera projection model and the visibility constraint. Considering the VCMD and camera models, the plant model of the visual servo open-loop was derived and, based on it, two predictive control strategies were developed. First, the control approach uses the Generalized Predictive Controller (GPC) to improve accuracy along trajectories in Cartesian space by employing information on the future reference. The second strategy is a predictive control algorithm based on EPSAC (Extended Predictive Self Adaptive Controller) which can take into account the nonlinearities of the plant model. The effectiveness of the predictive control strategies are successfully validated by simulations and with real-time experiments on a 6 DOF industrial robot manipulator.
An Improved Image Scrambling Algorithm
Authors: Shengbing Che, Zuguo Che, Bin Ma
Venue: Proceedings of the 2008 Second International Conference on Genetic and Evolutionary Computing (2008)

Image unchangeable coefficient rule in discrete cosine and wavelet transformation was proved when it was scrambled in spatial domain. Based on the constructed composite chaotic iterative dynamic system, whose invariant distribution density was one, and in order to initialize for composite chaotic iterative dynamic system, it put forward two construced functions using image scramble constant as input parameter. Then a fragile and adaptive image scrambling algorithm and two new scrambling evaluative parameter were brought forward. They were called similar degree and anti-tamper radius. Experiments showed that the algorithm could extract original image without any accessional information, it was sensitive to all kinds of attack, its anti-tamper radius was larger than current scrambling algorithms. So the algorithm could be applied to the situation of the strictest requests, such as lawcourt and physic etc.
A systematic approach to unstructured mesh generation for ocean modelling using GMT and Terreno
Authors: G. J. Gorman, M. D. Piggott, M. R. Wells, C. C. Pain, P. A. Allison
Venue: Computers Geosciences (2008)

A systematic approach to unstructured mesh generation for ocean modelling is presented. The method optimises unstructured meshes to approximate bathymetry to a user specified accuracy which may be defined as a function of longitude, latitude and bathymetry. GMT (Generic Mapping Tools) is used to perform the initial griding of the bathymetric data. Subsequently, the Terreno meshing package combines automated shoreline approximation, mesh gradation and optimisation methods to generate high-quality bathymetric meshes. The operation of Terreno is based upon clearly defined error measures and this facilitates the automation of unstructured mesh generation while minimising user intervention and the subjectivity that this can introduce.
Using Technology to Enhance Aging in Place
Authors: Marilyn Rantz, Marjorie Skubic, Steven Miller, Jean Krampe
Venue: Proceedings of the 6th international conference on Smart Homes and Health Telematics (2008)

Integrated sensor networks have been installed in apartments of residents at TigerPlace, a retirement community helping residents age in place. Motion and bed sensor events have been logged continuously for over two years in some apartments. Using data from the sensor network, we have been investigating potential correlations to health events, such as falls, emergency room visits, and hospitalization, to identify patterns in the sensor data which might have offered some clues to predict the events. The long-term goal is to generate alerts that notify care givers of changes in a resident's condition so they could intervene and prevent or delay adverse health events. In this paper, two case studies are presented. In each case, the sensor network detected changes in the resident's condition that were not detected by traditional health care assessment.
Legal Protection of Computer Graphics Software
Authors: Warren Lavey
Venue: IEEE Computer Graphics and Applications (1983)

The law provides three forms of protection for creative and inventive endeavors¿but new technology brings new complexities to the courts' problems of interpretation. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
Robot Path Planning in Kernel Space
Authors: José Alí Moreno, Cristina García
Venue: Proceedings of the 8th international conference on Adaptive and Natural Computing Algorithms, Part II (2007)

We present a new approach to path planning based on the properties of the minimum enclosing ball (MEB) in a reproducing kernel space. The algorithm is designed to find paths in high-dimensional continuous spaces and can be applied to robots with many degrees of freedom in static as well as dynamic environments. In the proposed method a sample of points from free space is enclosed in a kernel space MEB. In this way the interior of the MEB becomes a representation of free space in kernel space. If both start and goal positions are interior points in the MEB a collision-free path is given by the line, contained in the MEB, connecting them. The points in work space that satisfy the implicit conditions for that line in kernel space define the desired path. The proposed algorithm was experimentally tested on a workspace cluttered with random and non random distributed obstacles. With very little computational effort, in all cases, a satisfactory free collision path could be calculated.
Design method for robust PI-like process fuzzy logic controller
Authors: Snejana Yordanova
Venue: Proceedings of the 9th WSEAS International Conference on Fuzzy Systems (2008)

The industrial applications of fuzzy logic controllers (FLC) for complex, nonlinear, time varying processes with time delay mark a considerable progress. It is inspired by the recent theoretical achievements in the FLC's design and tuning related to system stability and robustness. The design and the FLC simplicity are of crucial importance. There exists an easy design and tuning procedure for a simple single input fuzzy controller (SI FC) that ensures fuzzy system stability and robustness. The SI FC, however, loses some of the richness of the behaviour of the ordinary FLC. The aim of the present investigation is to develop a simple design method for incremental PI-like ordinary FLCs on the basis of the SI FC approach, ensuring stability and robustness in the closed loop system for the control of industrial plants with time delay and model uncertainty. The main contributions are: 1) a design method for FLC, based on modification of the SI FC stability and robustness approach; 2) FLC tuning algorithm. The results are applied for the stabilisation of the air temperature in a furnace using MATLAB™. The advantages of the designed SI FC system are assessed in comparison with SI FC control system via simulations.
P4A: A New Privacy Model for XML
Authors: Angela C. Duta, Ken Barker
Venue: Proceeedings of the 22nd annual IFIP WG 11.3 working conference on Data and Applications Security (2008)

We propose a new privacy model for XML data called Privacy for All (P4A) to capture collectors privacy practice and data providers privacy preferences. Through P4A data collectors specify the purpose of data collection along with recipients, retention time and users. Data providers can agree to the collectors' practice or impose their own privacy preferences. P4A offers more flexibility to both data collectors and providers in specifying privacy statements and preferences, including but not limited to full permission, denial, and conditional access to information.A privacy practice defines purposes, recipients, retention period, and uses of data collection. Data providers share their private information with data collectors under restrictions specified by privacy preferences. P4A offers individualsmultiple options for restrictions such as conditional access, return results as range intervals for each data item and purpose.
Comparative-experimental study of FSM optimization and mapping onto LUT-FPGAs, using SIS, MVSIS and ABC packages
Authors: Dokouzyannis Stavros, Arzoumanidis Efsevios
Venue: Proceedings of the 7th WSEAS International Conference on Electronics, Hardware, Wireless and Optical Communications (2008)

As digital circuits become bigger and faster the need for effective optimization packages become crucial. SIS, an academic optimization CAD package for digital circuits, which appeared in early 90's, is unique and thus remains the basic reference regarding the performance of successor systems. Besides, SIS is unique for optimization of sequential circuits and thus valuable, regardless of its drawbacks. MVSIS is a relative new package, developed also at Berkeley University, which incorporates new ideas and algorithms, regarding optimization, and has the powerful ability to manipulate multi-valued logic networks. As a matter of fact, it is considerably faster than SIS, especially for large circuits, giving however overall comparable results for area and level. ABC, is the newest, still under development CAD package from the same university, appears to have a challenging performance for large circuits; especially regarding the time needed for optimization. In this paper we try to compare the performance of the mentioned CAD software systems using three criteria. Namely, the time needed to get best optimization results, the area and the level after mappings onto LUT-FPGAs.
Using EventB to Create a Virtual Machine Instruction Set Architecture
Authors: Stephen Wright
Venue: Proceedings of the 1st international conference on Abstract State Machines, B and Z (2008)

A Virtual Machine (VM) is a program running on a conventional microprocessor that emulates the binary instruction set, registers, and memory space of an idealized computing machine, a well-known example being the Java Virtual Machine (JVM). Despite there being many binary Instruction Set Architectures (ISA) in existence, all share a set of core properties which have been tailored to their particular applications. An abstract model may capture these generic properties and be subsequently refined to a particular machine, providing a reusable template for development of formally proven ISAs: this is a task to which the EventB [16,18] notation is well suited. This paper describes a project to use the RODIN tool-set [24] to perform such a process, ultimately producing the MIDAS (Microprocessor Instruction and Data Abstraction System) VM, capable of running binary executables compiled from high-level languages such as C [9]. The abstract model is incrementally refined to a model capable of automatic translation to C source code, and compilation for a hardware platform using a standard compiler. A second C compiler, targeted to the VM itself, allows C programs to be executed on it. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
North America's Electricity Infrastructure: Are We Ready for More Perfect Storms?
Authors: Massoud Amin
Venue: IEEE Security and Privacy (2003)

With the tragic events of 9/11 permanently etched in our minds, the massive 14 August power outage evoked eerie reminders of what shook our world 2 years ago. While preliminary reports indicate that there was no apparent evidence of terrorism, the cascading blackouts were a sudden illumination of our electricity infrastructure's vulnerable condition. This infrastructure affects us all are we prepared for future storms?
Asymmetric Interactions between Cooperators and Defectors for Controlling Self-repairing
Authors: Yoshiteru Ishida, Masahiro Tokumitsu
Venue: Proceedings of the 12th international conference on Knowledge-Based Intelligent Information and Engineering Systems, Part III (2008)

In an information network composed of selfish agents pursuing their own profits, undesirable phenomena such as spam mail occur if the profit sharing and other game structures permit such equilibriums. This note focuses on applying the spatial Prisoner's Dilemma to control a network of selfish agents by allowing each agent to cooperate or to defect. Cooperation and defection respectively correspond to repair (using the self resource) and not repair (thus saving the resource) in a self-repair network. Without modifying the payoff, the network will be absorbed into the state where all the agents become defectors and abnormal. Similarly to kin selection, agents favor survival of neighbors in organizing these two actions to prevent the network from being absorbed if payoffs are measured by summing all the neighboring agents. Even with this modification, the action organization exhibits spatial and temporal adaptability to the environment.
Free Association Versus Recognition: Sensitivity for Chance Discovery in Cross-Cultural Color Design
Authors: Gyoung Soon Choi, Ruediger Oehlmann, David Cottington
Venue: Proceedings of the 12th international conference on Knowledge-Based Intelligent Information and Engineering Systems, Part II (2008)

Chance Discovery focuses on opportunities and risks for future decision making. This makes it suitable for cross-cultural color design. An on-going research program aims at developing a new method of deriving opportunities and risks for design frameworks from the semantic and context analysis of the culturally constrained use of color. As part of this program, this paper compares two experiments involving two groups of Korean and English participants. In the first qualitative experiment participants were presented with preferred English and Korean colors and were asked to describe the meaning of the colors in a free association format. In the second quantitative experiment two different groups of English and Korean participants were presented with the same colors combined with selected explanations from the first experiment. The participants had then to identify their preference on a Likert scale from 1 to 7. Although the differences between colors (p < 0.001) and between meanings (p < 0.001) were significant, the differences between Korean and English participants were not significant (p < 0.077). The difference in the experimental results suggests that both methods have different sensitivities for the discovery of new cross-cultural chances. Implications for e-commerce Web design will be discussed.
Multiclass G-Networks of Processor Sharing Queues with Resets
Authors: Jean-Michel Fourneau
Venue: Proceedings of the 15th international conference on Analytical and Stochastic Modeling Techniques and Applications (2008)

We consider an open queueing network of generalized queues with several class of customers and one class of signal. Each queue has an infinite capacity and one server. The service time is exponential. The service discipline is Processor Sharing. After its service completion a customer moves to another queue and may become a signal. When the signal enters a non empty queue it vanishes while it resets the queue when it enters an empty queue. We prove that the steady state distribution for such a network of queues has a product form solution. To the best of our knowledge it is the first multiclass network of generalized queues and resets with product form solution.