ppxscal/embedding_network huggingface dataset:
Emotion Enhanced Multimedia Meetings Using the Concept of Virtual Space Teleconferencing
Venue: Proceedings of the 1996 International Conference on Multimedia Computing and Systems (1996)

In this paper we investigate the unique advantages of our proposed Virtual Space Teleconferencing System (VST) in the area of multimedia teleconferencing, with emphasis to facial emotion transmission and recognition. Specially we show that, using this concept, emotions of a local participant can be transmitted to the remote party with higher recognition rate by enhancing the emotions using some intelligence processing in between the local and the remote participants. This leads to a kind of emotion enhanced teleconferencing system which can supersede face to face meetings, by effectively alleviating the barriers in recognizing emotions between different nations. Also in this paper we state about a concept known as a virtual person, which is a better alternative to blurred or mosaiced facial images that one can find in some television interviews with people who are not willing to be exposed in public. 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
Intelligent Traffic Control System Based on DSP and Nios II
Authors: Haimeng Zhao, Xifeng Zheng, Weiya Liu
Venue: Proceedings of the 2009 International Asia Conference on Informatics in Control, Automation and Robotics (2009)

In view of domestic traffic, the traffic flow is increasing rapidly recent years, whereas the traffic control is deficient. This paper presents a design of intelligent traffic control system based on DSP and Nios II. Using Dual-CPU, Intelligent Traffic Control System combined with logic control in FPGA implements kinds of functions, which include cross-phase adjustment, exchanging and establishing related information, live human-computer interaction and remote control etc. The system works mostly at the mode of timing and multiple phases according to the user demands dynamically, thus it breaks through the bottleneck of traditional traffic signal controller, and can accomplish the control in complicated and diversified traffic. This paper gives the realization of hardware system as well as the software system. The experiment results show that the Intelligent Traffic Control System can completely meet the requirements of modern traffic control.
A goal programming model for aggregate production planning with resource utilization constraint
Authors: Stephen C. H. Leung, Shirley S. W. Chan
Venue: Computers and Industrial Engineering (2009)

This paper addresses the aggregate production planning problem with different operational constraints, including production capacity, workforce level, factory locations, machine utilization, storage space and other resource limitations. Three production plants in North America and one in China are considered simultaneously. A pre-emptive goal programming model is developed to maximize profit, minimize repairing cost and maximize machine utilization of the Chinese production plant hierarchically. A set of data from a surface and materials science company is used to test the effectiveness and the efficiency of the proposed model. Results illustrate the flexibility and the robustness of the proposed model by adjusting goal priorities with respect to importance of each objective and the aspiration level with respect to desired target values.
Hardware protection and authentication through netlist level obfuscation
Authors: Rajat Subhra Chakraborty, Swarup Bhunia
Venue: Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design (2008)

Hardware Intellectual Property (IP) cores have emerged as an integral part of modern System-on-Chip (SoC) designs. However, IP vendors are facing major challenges to protect hardware IPs and to prevent revenue loss due to IP piracy. In this paper, we propose a novel design methodology for hardware IP protection and authentication using netlist level authentication. The proposed methodology can be integrated in the SoC design and manufacturing flow to provide hardware protection to the IP vendors, the chip designer, and the system designer. Simulation results on ISCAS-89 benchmark circuits show that we can achieve high levels of security through a well-formulated obfuscation scheme at less than 10% area overhead under delay constraint.
A comparative study of the methods for image processing using texture characteristics
Authors: Mariana Jurian, Ioan Lita, Florentina Enescu, Daniel Alexandru Visan
Venue: Proceedings of the 8th conference on Applied informatics and communications (2008)

Based on the experiments, a comparative study has been made regarding certain methods of image processing by the texture characteristic, to find the optimum method for detecting color texture. There are two main points: the quality of the detection and the response time. For the experiments have been used the co-occurrence matrix and the iso-segments matrix of the gray or color levels. These methods are based on processing the image at a pixel level and the making of matrix that contain certain spatial positions of pixels. The resulting matrix was analysed and, based on the existing information, the characteristics vectors associated to the matrix was determined. Each method was studied by analyzing the pixels of the image files in certain situations and directions and at certain distances. The co-occurrence methods had better results for the queries based on water, wood and grass textures and on the ones based on sand, ruble and clouds, better results were obtained using the iso-segment matrix.
Introduction
Authors: Tharam S. Dillon, Elizabeth Chang, Robert Meersman, Katia Sycara
Venue: Advances in Web Semantics I: Ontologies, Web Services and Applied Semantic Web (2008)

The Web has now been in existence for quite some time and it is pervasive in its influence on all aspects of society and commerce. It has also produced a major shift in our thinking on the nature and scope of information processing. However in its technological nature and its supporting theoretical foundations, it was relatively rudimentary, being largely suitable for information dissemination. It is rapidly moving away from this, to application deployment and knowledge deployment that require complex interactions and properly structured underlying semantics. This has been a sudden upsurge of research activity in the problems associated with adding semantics to the Web. This work on semantics will involve data, knowledge, and process semantics.
Evaluation of development of information society and participation of the citizens in the Czech Republic by means of spatial methods
Authors: Jitka Komarkova, Katerina Langrova, Pavel Sedlak
Venue: Proceedings of the 12th WSEAS international conference on Computers (2008)

The aim of the paper is to find appropriate methods for evaluation of development of information society and participation of the citizens in the Czech Republic during last few years. Development is evaluated for all 14 regions of the republic and it is done by means of basic statistical methods and mainly by means of spatial analyses in geographic information systems environment. Evaluation is based on available data which were provided by Czech Statistical Office. Evaluation for example showed that Prague (the capital) was a leader in the beginning but during last few years the other regions have closed the gap on the capital.
Managing the Alignment between Business and Software Services Requirements from a Capability Model Perspective
Authors: Eric Grandry, Eric Dubois, Michel Picard, André Rifaut
Venue: Proceedings of the 1st European Conference on Towards a Service-Based Internet (2008)

In this paper we introduce a framework for capturing and managing the requirements associated with the non-functional part of the services like service management, security management, assurance, for which norms, recommendations and good practices exist. The proposed framework considers these service requirements both from a business and a software perspective. The elicitation, the capture and the traceability issues related to these requirements are solved with goal-oriented requirements engineering techniques, while the structuring and the assessment of the requirements is based on the ISO/IEC-15504 standard. The overall framework is illustrated with a business case run by our research centre in a public/private partnership. It is associated with the design of project management services delivered through a portal and is focusing on the services management requirements in relation with the IT service management ISO/IEC 20000 norm.
Convergence analysis of a streamline diffusion method for a singularly perturbed convection-diffusion problem
Authors: Zhongdi Cen, Lifeng Xi
Venue: WSEAS Transactions on Mathematics (2008)

A streamline diffusion finite element method (SDFEM) is applied to a singularly perturbed convection-diffusion two-point boundary value problem in conservative form. The stability and accuracy of the SDFEM on arbitrary grids are studied. We derive the pointwise error estimates and the approximation of derivatives. These bounds are then made explicit for the particular cases of Shishkin-type meshes. Numerical experiments support our theoretical results.
Using improvisation to enhance the effectiveness of brainstorming
Authors: Elizabeth Gerber
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

Group brainstorming is a popular ideation method for design teams, yet brainstorming outcomes vary greatly. The method depends on individuals working collectively to generate ideas, and so group dynamics determine whether the method succeeds or fails. This paper explores how interaction designers used techniques from theatrical improvisation, or improv, to adhere to the rules of brainstorming thereby enhancing group interactions while collaborating. The usefulness of improvisation for brainstorming stems from the similarity of the goals of improvisation and brainstorming, the similarity of the recurrent problems that actors and designers encounter when collaborating, and the distinctness of the ways each have devised to resolve the problems that block the group's performance. This paper reflects on the individual- and group-level outcomes for design students and practitioners while brainstorming.
Software Architecture Design Reasoning: A Case for Improved Methodology Support
Authors: Antony Tang, Jun Han, Rajesh Vasa
Venue: IEEE Software (2009)

Software architecture design is a critical aspect of developing large-scale software systems. However, the practice of architecture design reasoning is immature, partly because of a lack of practical methodology support. The authors discuss why capturing design rationale—the elements of design reasoning—is useful and how developers use it in architecture design. They demonstrate architecture design reasoning's application with a UML-based modeling method called Architecture Rationale and Elements Linkage.
DNS of buoyancy-dominated turbulent flows on a bluff body using the immersed boundary method
Authors: Seongwon Kang, Gianluca Iaccarino, Frank Ham
Venue: Journal of Computational Physics (2009)

A novel immersed boundary (IB) method has been developed for simulating multi-material heat transfer problem - a cylinder in a channel heated from below with mixed convection. The method is based on a second-order velocity/scalar reconstruction near the IB. A novel algorithm has been developed for the IB method to handle conjugate heat transfer. The fluid-solid interface is constructed as a collection of disjoint faces of control volumes associated to different material zones. Coupling conditions for the material zones have been developed such that continuity and conservation of the scalar flux are satisfied by a second-order interpolation. Predictions of the local Nusselt number on the cylinder surface show good agreement with the experimental data. The effect of the Boussinesq approximation on this problem was also investigated. Comparison with the variable density formulation suggests that, in spite of a small thermal expansion coefficient of water, the variable density formulation in a transitional flow with mixed convection is preferable.
Sliding Mode Controller Design with H∞ Norm and Variance Constraints for Bilinear Stochastic Systems
Authors: Koan-Yuh Chang, Huan-Jung Lin, Tsung-Lin Cheng
Venue: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (2008)

Based on the concept of sliding mode control, this paper investigates the upper bound covariance assignment with H∞ norm and variance constrained problem for bilinear stochastic systems. We find that the invariance property of sliding mode control ensures nullity of the matched bilinear term in the system on the sliding mode. Moreover, using the upper bound covariance control approach and combining the sliding phase and hitting phase of the system design, we will derive the control feedback gain matrix G, which is essential to the controller u(t) design, to achieve the performance requirements. Finally, a numerical example is given to illustrate the control effect of the proposed method.
Design and implementation of micro caching
Authors: Gaurav Sengar, Anuj Kumar
Venue: Proceedings of the 2nd India software engineering conference (2009)

Caching is one of the most efficient ways of improving the performance of software systems in terms of both execution time and network usage. Caching can be done at different levels and using different methods. Runtime Micro Caching is one of them. It deals with the creation of a temporary cache at runtime to store the information required by the current transaction. In this approach, the cache is created at the beginning of the transaction and destroyed at the termination/end of the respective transaction. The major advantage of this cache is that it overcomes stale data problem and results in highly efficient usage of network and data store. In this paper, we have presented a novel and simple design of Micro Cache and discussed its usage in keeping user's data in sync with an external master directory as a proof of concept. We have noticed a significant improvement in the performance.
semQA: SPARQL with Idempotent Disjunction
Authors: E. Patrick Shironoshita, Yves R. Jean-Mary, Ray M. Bradley, Mansur R. Kabuka
Venue: IEEE Transactions on Knowledge and Data Engineering (2009)

The SPARQL LeftJoin abstract operator is not distributive over Union; this limits the algebraic manipulation of graph patterns, which in turn restricts the ability to create query plans for distributed processing or query optimization. In this paper, we present semQA, an algebraic extension for the SPARQL query language for RDF, which overcomes this issue by transforming graph patterns through the use of an idempotent disjunction operator Or as a substitute for Union. This permits the application of a set of equivalences that transform a query into distinct forms. We further present an algorithm to derive the solution set of the original query from the solution set of a query where Union has been substituted by Or. We also analyze the combined complexity of SPARQL, proving it to be NP-complete. It is also shown that the SPARQL query language is not, in the general case, fixed-parameter tractable. Experimental results are presented to validate the query evaluation methodology presented in this paper against the SPARQL standard, to corroborate the complexity analysis, and to illustrate the gains in processing cost reduction that can be obtained through the application of semQA.
Plenary lecture III: opposition-based computation
Authors: Shahryar Rahnamayan
Venue: Proceedings of the 8th conference on Simulation, modelling and optimization (2008)

Footprints of the opposition concept can be observed in many areas around us. But it has sometimes been known by different names. Opposite particles in physics, complement of an event in probability, absolute or relative complement in set theory, and theses and antitheses in dialectic just are some examples to mention. But for the first time, recently, Opposition-Based Learning (OBL) was proposed and then the opposition-based approaches have been introduced in different artificial intelligence areas. All of them have tried to enhance searching or leaning process by utilizing the opposition concept. Opposition-based evolutionary algorithms, opposition-based neural networks, and also opposition-based reinforcement learning are some efforts in this direction. The main idea behind OBL is the simultaneous consideration of a candidate and its corresponding opposite candidate in order to achieve a better approximation for the current solution. This lecture will introduce Opposition-Based Computation (OBC) in general and also its possible variant applications in soft computing techniques.
An Approach to Trajectory Estimation of Moving Objects in the H.264 Compressed Domain
Authors: Christian Käs, Henri Nicolas
Venue: Proceedings of the 3rd Pacific Rim Symposium on Advances in Image and Video Technology (2009)

This paper presents a simple and fast method for unsupervised trajectory estimation of multiple moving objects within a video scene. It is entirely based on the motion vectors that are present in compressed H.264/AVC or SVC video streams. We extract these motion vectors, perform robust frame-wise global motion estimation and use these estimates to form outlier masks. Motion segmentation on the spatio-temporally filtered outlier masks is performed to detect moving regions in the scene, which are analyzed over time in order to identify similar objects in adjacent frames. The construction of so-called Object History Images (OHIs) is proposed to stabilize the trajectories, which are finally interpolated with X-splines. The system enables real-time analysis with standard hardware.
Evaluating driver attention and driving behaviour: comparing controlled driving and simulated driving
Authors: Kenneth M. Bach, Mads G. Jæger, Mikael B. Skov, Nils G. Thomassen
Venue: Proceedings of the 22nd British HCI Group Annual Conference on HCI 2008: People and Computers XXII: Culture, Creativity, Interaction - Volume 1 (2008)

Emerging in-vehicle systems have turned the contemporary car into a human-computer interaction context that has its own set of rules and challenges. Interacting with in-vehicle systems while driving a car can greatly affect the driving performance and have been shown to be the cause of many road accidents. Evaluation of in-vehicle systems is a subject of much interest to developers and researchers. One of the major issues is how to evaluate; is there added value in taking your evaluation on the road or is simulated driving sufficient? This paper examines differences and similarities between taking in-vehicle systems to a track or to the laboratory by investigating the results (and costs associated) from two driving settings for in-vehicle systems evaluation; one on a test track and one using a lightweight driving simulator. Our results show that the two settings do seem to lead to a number of similar results. However, our results indicated that controlled driving yield more frequent and longer eye glances compared to simulated driving and driving errors were more common in simulated driving.
A hybrid approach based on multi-agent geosimulation and reinforcement learning to solve a UAV patrolling problem
Authors: Jimmy Perron, Jimmy Hogan, Bernard Moulin, Jean Berger, Micheline Bélanger
Venue: Proceedings of the 40th Conference on Winter Simulation (2008)

In this paper we address a dynamic distributed patrolling problem where a team of autonomous unmanned aerial vehicles (UAVs) patrolling moving targets over a large area must coordinate. We propose a hybrid approach combining multi-agent geosimulation and reinforcement learning enabling a group of agents to find near optimal solutions in realistic geo-referenced virtual environments. We present the COLMAS System which implements the proposed approach and show how a set of UAV can automatically find patrolling patterns in a dynamic environment characterized by unknown obstacles and moving targets. We also comment the value of the approach based on limited computational results.
Perfect matchings in large uniform hypergraphs with large minimum collective degree
Authors: Vojtech Rödl, Andrzej Ruciński, Endre Szemerédi
Venue: Journal of Combinatorial Theory Series A (2009)

We define a perfect matching in a k-uniform hypergraph H on n vertices as a set of @?n/k@? disjoint edges. Let @d"k"-"1(H) be the largest integer d such that every (k-1)-element set of vertices of H belongs to at least d edges of H. In this paper we study the relation between @d"k"-"1(H) and the presence of a perfect matching in H for k>=3. Let t(k,n) be the smallest integer t such that every k-uniform hypergraph on n vertices and with @d"k"-"1(H)>=t contains a perfect matching. For large n divisible by k, we completely determine the values of t(k,n), which turn out to be very close to n/2-k. For example, if k is odd and n is large and even, then t(k,n)=n/2-k+2. In contrast, for n not divisible by k, we show that t(k,n)~n/k. In the proofs we employ a newly developed ''absorbing'' technique, which has a potential to be applicable in a more general context of establishing existence of spanning subgraphs of graphs and hypergraphs.
A flexible and scalable experimentation layer
Authors: Jan Himmelspach, Roland Ewald, Adelinde M. Uhrmacher
Venue: Proceedings of the 40th Conference on Winter Simulation (2008)

Modeling and simulation frameworks for use in different application domains, throughout the complete development process, and in different hardware environments need to be highly scalable. For achieving an efficient execution, different simulation algorithms and data structures must be provided to compute a concrete model on a concrete platform efficiently. The support of parallel simulation techniques becomes increasingly important in this context, which is due to the growing availability of multi-core processors and network-based computers. This leads to more complex simulation systems that are harder to configure correctly. We present an experimentation layer for the modeling and simulation framework James II. It greatly facilitates the configuration and usage of the system for a user and supports distributed optimization, on-demand observation, and various distributed and non-distributed scenarios.
Stochastic convex ordering for multiplicative decrease internet congestion control
Authors: Han Cai, Do Young Eun, Sangtae Ha, Injong Rhee, Lisong Xu
Venue: Computer Networks: The International Journal of Computer and Telecommunications Networking (2009)

Window growth function for congestion control is a strong determinant of protocol behaviors, especially its second and higher-order behaviors associated with the distribution of transmission rates, its variances, and protocol stability. This paper presents a new stochastic tool, called convex ordering, that provides an ordering of any convex function of transmission rates of two multiplicative-decrease protocols and valuable insights into high-order behaviors of protocols. As the ordering determined by this tool is consistent with any convex function of rates, it can be applied to any unknown metric for protocol performance that consists of some high-order moments of transmission rates, as well as those already known such as rate variance. Using the tool, it is analyzed that a protocol with a growth function that starts off with a concave function and then switches to a convex function (e.g., an odd order function such as x^3 and x^5) around the maximum window size in the previous loss epoch, gives the smallest rate variation under a variety of network conditions. Among existing protocols, BIC and CUBIC have this window growth function. Experimental and simulation results confirm the analytical findings.