ppxscal/embedding_network huggingface dataset:
An implementation of modelling resource in a manufacturing grid for resource sharing
Authors: S. Y. Shi, R. Mo, H. -C. Yang, Z. -Y. Chang, Z. -F. Chen
Venue: International Journal of Computer Integrated Manufacturing (2007)

Grid technology is a new sustentation for the sharing of global manufacturing resources. To promote the application of grid technologies in the manufacturing industry, a framework for a manufacturing grid (MG) has been expatiated. The framework is composed of a network infrastructure layer, a manufacturing resource aggregation layer, a manufacturing resource management layer, a manufacturing service application layer and a MG portal layer. Modelling manufacturing resources, one key technology of implementing the MG application system, has been studied intensively. A manufacturing resource hierarchy model (MRHM), which consists of a manufacturing resource layer, a resource expressing layer and a resource interface layer, is proposed. In the model, various manufacturing resources are aggregated into a resource layer; all resource information is encapsulated in an information expressing layer employing XML (extensible markup language) schema; all accessing operations to resources are defined in the resource interface layer using WSDL (web service description language). Lastly, being the validation of MRHM, a standard part library system based on Unigraphics18.0 and SQL Server2000 is encapsulated as a resource node in the MG. The node provides online services like querying information for standard parts, viewing and downloading geometry models of standard parts, and so on.
Model-Driven Engineering of Multi-target Plastic User Interfaces
Authors: Benoît Collignon, Jean Vanderdonckt, Gaëlle Calvary
Venue: Proceedings of the Fourth International Conference on Autonomic and Autonomous Systems (2008)

A Multi-target user interface is composed of a series of interconnected variations of the same user interfaces, but tailored for different targets or different contexts of use. When access to software applications must be guaranteed in more than one context of use, it is necessary to adapt these user interfaces in order to preserve their usability when the switch between contexts occur. For this purpose, this paper proposes a model and a presentation technique to express and manipulate the plasticity domain of a user interface. The plasticity domain denotes the set of contexts of use it is able to cover while preserving its usability. In this paper, we focus on one aspect of the context of use: the platform screen size. A window requires a graphical area for its rendering and manipulation by the enduser. The model supports the definition of this graphi-cal area in terms of window size and window place. The visualization technique helps in both making ob-servable the set of presentations that fit the available space, and perceiving which operations could help in switching from one presentation to another one. The first benefit is powerful for eliciting the candidate presentations when the context of use changes. The model has been integrated in UsiXML, a XML-compliant user interface description language.
Brief paper: Sharpe-ratio pricing and hedging of contingent claims in incomplete markets by convex programming
Authors: Mustafa Ç. Pınar
Venue: Automatica (Journal of IFAC) (2008)

We analyze the problem of pricing and hedging contingent claims in a financial market described by a multi-period, discrete-time, finite-state scenario tree using an arbitrage-adjusted Sharpe-ratio criterion. We show that the writer's and buyer's pricing problems are formulated as conic convex optimization problems which allow to pass to dual problems over martingale measures and yield tighter pricing intervals compared to the interval induced by the usual no-arbitrage price bounds. An extension allowing proportional transaction costs is also given. Numerical experiments using S&P 500 options are given to demonstrate the practical applicability of the pricing scheme.
Hardware acceleration for full-wave analysis of integrated circuits
Authors: John R. Humphrey, Michael R. Bodnar, Eric J. Kelmelis, James P. Durbano
Venue: Proceedings of the 10th WSEAS International Conference on APPLIED MATHEMATICS (2006)

As circuit speeds increase and sizes decrease, lumped sum and quasi-static methods become inaccurate and rigorous analysis via the Method of Moments is then required to achieve accurate results. Unfortunately, this requires the solution of a large, dense matrix. Despite algorithmic advances, there is still a need for solving the system in less time. To this end, we have developed a prototype solver that implements a state-of-the-art algorithm in an accelerated hardware environment. In this paper, we examine our progress to date, which consists of the development of a matrix-vector-multiply unit, the key component of the design.
Stereoscopic video coding and disparity estimation for low bitrate applications based on MPEG-4 multiple auxiliary components
Authors: Jiyoung Kim, Yongtae Kim, Kwanghoon Sohn
Venue: Image Communication (2008)

Using an MPEG-4 MAC (multiple auxiliary component) system is a good way to encode stereoscopic video with existing standard CODECs, especially when it comes to low bitrate applications. In this paper, we discuss the properties and problems of MAC systems when encoding stereoscopic video, and propose an MAC-based stereoscopic video coder and disparity estimation scheme to solve those problems. We used a reconstructed disparity map during the disparity compensation process and took that disparity map into account while estimating the base-view sequence motion vectors. Moreover, we proposed a search range finding and illumination imbalance decision system. We also proposed a block-based disparity map regularization process as well as block splitting in the object boundary and occlusion regions (to reduce the number of bits to encode in both the disparity map and the residual image). Last, we compensated for the imbalance between two cameras with a novel system that used MAC characteristics. Experimental results indicate that the proposed MAC system outperformed conventional stereo coding systems by a maximum of 3.5dB in terms of the PSNR and 10-18% in terms of bitsaving, especially in low bitrate applications.
A methodology for quadrilateral finite element mesh coarsening
Authors: Matthew L. Staten, Steven Benzley, Michael Scott
Venue: Engineering with Computers (2008)

High fidelity finite element modeling of continuum mechanics problems often requires using all quadrilateral or all hexahedral meshes. The efficiency of such models is often dependent upon the ability to adapt a mesh to the physics of the phenomena. Adapting a mesh requires the ability to both refine and/or coarsen the mesh. The algorithms available to refine and coarsen triangular and tetrahedral meshes are very robust and efficient. However, the ability to locally and conformally refine or coarsen all quadrilateral and all hexahedral meshes presents many difficulties. Some research has been done on localized conformal refinement of quadrilateral and hexahedral meshes. However, little work has been done on localized conformal coarsening of quadrilateral and hexahedral meshes. A general method which provides both localized conformal coarsening and refinement for quadrilateral meshes is presented in this paper. This method is based on restructuring the mesh with simplex manipulations to the dual of the mesh. In addition, this method appears to be extensible to hexahedral meshes in three dimensions.
A modified inexact operator splitting method for monotone variational inequalities
Authors: Min Li, Abdellah Bnouhachem
Venue: Journal of Global Optimization (2008)

The Douglas---Peaceman---Rachford---Varga operator splitting methods (DPRV methods) are attractive methods for monotone variational inequalities. He et al. [Numer. Math. 94, 715---737 (2003)] proposed an inexact self-adaptive operator splitting method based on DPRV. This paper relaxes the inexactness restriction further. And numerical experiments indicate the improvement of this relaxation.
Computing correlated equilibria in multi-player games
Authors: Christos H. Papadimitriou, Tim Roughgarden
Venue: Journal of the ACM (JACM) (2008)

We develop polynomial-time algorithms for finding correlated equilibria&mdash;a well-studied notion of rationality that generalizes the Nash equilibrium&mdash;in a broad class of succinctly representable multiplayer games, encompassing graphical games, anonymous games, polymatrix games, congestion games, scheduling games, local effect games, as well as several generalizations. Our algorithm is based on a variant of the existence proof due to Hart and Schmeidler, and employs linear programming duality, the ellipsoid algorithm, Markov chain steady state computations, as well as application-specific methods for computing multivariate expectations over product distributions. For anonymous games and graphical games of bounded tree-width, we provide a different polynomial-time algorithm for optimizing an arbitrary linear function over the set of correlated equilibria of the game. In contrast to our sweeping positive results for computing an arbitrary correlated equilibrium, we prove that optimizing over correlated equilibria is NP-hard in all of the other classes of games that we consider.
Designing an inductive data stream management system: the stream mill experience
Authors: Hetal Thakkar, Barzan Mozafari, Carlo Zaniolo
Venue: Proceedings of the 2nd international workshop on Scalable stream processing system (2008)

There has been much recent interest in on-line data mining. Existing mining algorithms designed for stored data are either not applicable or not effective on data streams, where real-time response is often needed and data characteristics change frequently. Therefore, researchers have been focusing on designing new and improved algorithms for on-line mining tasks, such as classification, clustering, frequent itemsets mining, pattern matching, etc. Relatively little attention has been paid to designing DSMSs, which facilitate and integrate the task of mining data streams---i.e., stream systems that provide Inductive functionalities analogous to those provided by Weka and MS OLE DB for stored data. In this paper, we propose the notion of an Inductive DSMS---a system that besides providing a rich library of inter-operable functions to support the whole mining process, also supports the essentials of DSMS, including optimization of continuous queries, load shedding, synoptic constructs, and non-stop computing. Ease-of-use and extensibility are additional desiderata for the proposed Inductive DSMS. We first review the many challenges involved in realizing such a system and then present our approach of extending the Stream Mill DSMS toward that goal. Our system features (i) a powerful query language where mining methods are expressed via aggregates for generic streams and arbitrary windows, (ii) a library of fast and light mining algorithms, and (iii) an architecture that makes it easy to customize and extend existing mining methods and introduce new ones.
Investigation of wavelength GaInNAs 1300-1550 nm strained quantum wells on GaAs substrates
Authors: A. Aissat, S. Nacer, D. Berkani, J. P. Vilcot
Venue: Proceedings of the 1st WSEAS International Conference on Computational Chemistry (2007)

In this paper the band structures of GaxIn1-xNyAs1-y/GaAs strained quantum wells are investigated using 4×4 k.p Hamiltonian including the heavy hole, light hole and spin-orbit splitting bands. The III-V-nitride semiconductor alloys, GaxIn1-xNyAs1-y, operating at optical fibre telecommunications wavelengths around 1.3µm, attract an increasing amount of attention in the last couple of years not only due to its promising application but also due to its unusual optical and physical properties. By changing the well width, x composition and nitrogen composition (y), the effects of quantum confinement and compressive strain are examined. We also studied the influence of the incorporation of nitrogen (y) and antimony (Sb) in our structure.
Model Driven Management of Complex Systems: Implementing the Macroscope's Vision
Authors: Mikaël Barbero, Frédéric Jouault, Jean Bézivin
Venue: Proceedings of the 15th Annual IEEE International Conference and Workshop on the Engineering of Computer Based Systems (2008)

Several years ago, first generation model driven engineering (MDE) tools focused on generating code from high-level platform-independent abstract descriptions. Since then, the target scope of MDE has much broadened and now addresses for example testing, verification, measurement, tool interoperability, software evolution, and many more hard issues in software engineering. In this paper we study the applicability of MDE to another difficult problem: the management of complex systems. We show how the basic properties of MDE may be of significant help in this context and we characterize and extend MDE by the concept of a "megamodel", i.e. a model which elements may themselves be models. We sketch the basic characteristics of a tool for handling megamodels and we apply it to the example of the Eclipse.org ecosystem, chosen here as a representative illustration of a complex system. The paper finally discusses how the proposed original approach and tools may impact the construction and maintenance of computer based complex systems.
Training SVM with indefinite kernels
Authors: Jianhui Chen, Jieping Ye
Venue: Proceedings of the 25th international conference on Machine learning (2008)

Similarity matrices generated from many applications may not be positive semidefinite, and hence can't fit into the kernel machine framework. In this paper, we study the problem of training support vector machines with an indefinite kernel. We consider a regularized SVM formulation, in which the indefinite kernel matrix is treated as a noisy observation of some unknown positive semidefinite one (proxy kernel) and the support vectors and the proxy kernel can be computed simultaneously. We propose a semi-infinite quadratically constrained linear program formulation for the optimization, which can be solved iteratively to find a global optimum solution. We further propose to employ an additional pruning strategy, which significantly improves the efficiency of the algorithm, while retaining the convergence property of the algorithm. In addition, we show the close relationship between the proposed formulation and multiple kernel learning. Experiments on a collection of benchmark data sets demonstrate the efficiency and effectiveness of the proposed algorithm.
Rapid Detection of Constant-Packet-Rate Flows
Authors: Kuan-Ta Chen, Jing-Kai Lou
Venue: Proceedings of the 2008 Third International Conference on Availability, Reliability and Security (2008)

The demand for effective VoIP and online gaming traffic management methods continues to increase for purposes such as QoS provisioning, usage accounting, and blocking VoIP calls or game connections. However, identifying such flows has become a significant administrative burden because many of the applications use proprietary signaling and transport protocols. The question of how to identify proprietary VoIP traffic has yet to be solved. In this paper, we propose using a deviation-based classifier to identify VoIP and gaming traffic, given that such real-time interactive services normally send out constant-packet-rate (CPR) traffic with a fixed interval, in order to maintain real-timeliness and interactivity. Our contribution is two-fold: 1) We show that scale-free variability measures are more appropriate than scaledependent ones for quantifying the network variability injected into CPR traffic. 2) Our proposed classifier is particularly lightweight in that it only requires a few inter-packet times to make a decision. The evaluation results show that by only analyzing 10 successive inter-packet times, we can distinguish between CPR and non-CPR traffic with approximately 90% accuracy.
Investigation of delay system with piece-wise right side arising in radiotherapy
Authors: Vasiliy P. Marzeniuk, Alexander G. Nakonechny
Venue: Proceedings of the 5th WSEAS International Conference on Applied Mathematics (2004)

Class of system with constant delay and piece-wise right side arising in theory of reaction of cells on X-ray irradioation is considered. Exponential estimates of solutions allowing to solve problems of control of switch time and search of time necessary to reach desirable region are obtained. MSC 39,49,92.
BRDF display: interactive view dependent texture display using integral photography
Authors: Takafumi Koike, Takeshi Naemura
Venue: Proceedings of the 2008 workshop on Immersive projection technologies/Emerging display technologiges (2008)

We developed a bidirectional reflectance distribution function (BRDF) display that reproduces the texture of objects and rays of a light field. Our BRDF display is based on the technology used in integral photography (IP), which was originally investigated for use in 3D displays. An IP display is an ideal method for reproducing a light field in real space. The proposed BRDF display consists of a high-definition panel and a micro lens array, which is the same as in an IP display. The main difference to an IP display is that several optical parameters are optimized for BRDF use. We also describe content creation methods and show some content created using several of these methods.
B-cell Epitope Mapping of Helicobacter pylori Neutrophil-Activating Protein
Authors: Chibing Gong, Yan Li, Ming Li, Jun Luo, Hong Cao, Min Long
Venue: Proceedings of the 2007 Frontiers in the Convergence of Bioscience and Information Technologies (2007)

Helicobacter pylori is a major cause of chronic gastritis, peptic ulcer disease, and associated with gastric carcinoma. H. pylori Neutrophil-activating protein (HP-NAP) is one of the major virulence factors. It has been shown that HP-NAP is a good candidate antigen for a multi-epitopes vaccine against H. pylori. However, the B-cell epitopes of HP-NAP are largely unknown. Bioinformatic and immunological approaches are used to map B-cell epitopes of this antigen. Four high antigenic peptides located in different regions were found by B cell epitope prediction. Three mAbs were produced by using recombinant HP-NAP-GST as the immunogen by the standard hybridoma technique. The immunohistochemical staining showed that mAbs against HP-NAP specifically reacted with clinical strains of H. pylori. Three different mimicry B-cell epitopes as mimotopes of HP-NAP protein are identified through screening the phage displayed peptide libraries with these mAbs.
RET simulations for SLM-based maskless lithography
Authors: XiaoWei Guo, Jinglei Du, Xiangang Luo, Qiling Deng, Chunlei Du
Venue: Microelectronic Engineering (2008)

In this paper, we have preformed some simulations of reticle enhancement techniques (RET) for SLM-based maskless lithography. Our results show that, on the one hand, increased slope and larger process window can be simultaneously obtained by overtilting some mirrors around the printed structure; On the other hand, fully making use of the grayscaling generated by tilting a mirror across it, a maskless tool can use the same OPC model as a mask-based scanner, such as gray level serifs, sub-resolution scatter bars, transmittance controlled mask, and so on. The results also imply that optical maskless lithography (OML) provides the ability in attaining high resolution comparable to the mask-based lithography.
Design considerations for collaborative visual analytics
Authors: Jeffrey Heer, Maneesh Agrawala
Venue: Information Visualization (2008)

Visualizations leverage the human visual system to support the process of sensemaking, in which information is collected, organized, and analyzed to generate knowledge and inform action. Although most research to date assumes a single-user focus on perceptual and cognitive processes, in practice, sensemaking is often a social process involving parallelization of effort, discussion, and consensus building. Thus, to fully support sensemaking, interactive visualization should also support social interaction. However, the most appropriate collaboration mechanisms for supporting this interaction are not immediately clear. In this article, we present design considerations for asynchronous collaboration in visual analysis environments, highlighting issues of work parallelization, communication, and social organization. These considerations provide a guide for the design and evaluation of collaborative visualization systems.
Diversity of online community activities
Authors: Tad Hogg, Gabor Szabo
Venue: Proceedings of the nineteenth ACM conference on Hypertext and hypermedia (2008)

Web sites where users create and rate content as well as form links display many long-tailed distributions. Using one such site, Essembly, we propose causal mechanisms to explain these behaviors. Unlike purely descriptive models, our mechanisms use only information available to each user. We find the long-tails arise from large diversity of user activity and qualities of the rated content. The models not only explain overall behavior but also allow estimating the qualities of users and content from their early history on the site.
Securing Access in Network Operations-Emerging Tools for Simplifying a Carrier's Network Security Administration
Authors: Costa Constantakis
Venue: Information Systems Security (2007)

Security administrators at the global communications service providers have traditionally experienced difficulties in enforcing access security policies in their network operations. It has not, however, been for lack of trying. Whether security breaches have been intentional (hackers) or inadvertent (well-intentioned network operators misusing commands), network outages and intrusions due to an inability to enforce access security policies have been a serious problem, often resulting in tens of millions of dollars in foregone revenues while impairing a service provider's ability to provide continuous service to its customers. This article reviews the challenges that have existed to date for security administrators while exploring a 4-step approach, using newly available security administration automation tools, to overcome these challenges for network operating environments that involve many hundreds of network operators administering tens of thousands of network elements in a global network.
RFID Applications: Interfacing with Readers
Authors: Christian Floerkemeier, Elgar Fleisch
Venue: IEEE Software (2008)

As the proliferation of RFID systems progresses, software developers increasingly face the challenge of interfacing with these low-cost automatic identification systems. The authors provide an overview of the existing approaches to integrating RFID technology into IT systems. They discuss common challenges for software developers and present different RFID system architectures.
A Time Warping Speech Recognition System Based on Particle Swarm Optimization
Authors: Saeed Rategh, Farbod Razzazi, Amir Masoud Rahmani, Shayan Oveis Gharan
Venue: Proceedings of the 2008 Second Asia International Conference on Modelling & Simulation (AMS) (2008)

In this paper, dynamic programming alignment is replaced by a particle swarm optimization (PSO) procedure in time warping problem. The basic PSO is a very slow process to be applied to speech recognition application. In order to achieve a higher performance, by inspiring of PSO optimization methodology, we introduced a PSO Inspired Algorithm (PTW) that will significantly increase the computational performance of time warping in alignments of long length massive data sets. As a main enhancement, in PTW a pruning strategy with an add-in controlling threshold is defined that causes a considerable reduction in recognition time, while maintaining the system accuracy comparing to DTW.