ppxscal/embedding_network huggingface dataset:
A proximal cutting plane method using Chebychev center for nonsmooth convex optimization
Authors: Adam Ouorou
Venue: Mathematical Programming: Series A and B (2009)

An algorithm is developed for minimizing nonsmooth convex functions. This algorithm extends Elzinga&#x2013;Moore cutting plane algorithm by enforcing the search of the next test point not too far from the previous ones, thus removing compactness assumption. Our method is to Elzinga&#x2013;Moore&#x2019;s algorithm what a proximal bundle method is to Kelley&#x2019;s algorithm. Instead of lower approximations used in proximal bundle methods, the present approach is based on some objects regularizing translated functions of the objective function. We propose some variants and using some academic test problems, we conduct a numerical comparative study with Elzinga&#x2013;Moore algorithm and two other well-known nonsmooth methods.
Optimization of a MLP network through choosing the appropriate input set
Authors: Irina Topalova, Alexander Tzokev
Venue: Proceedings of the 12th WSEAS international conference on Computers (2008)

The neural networks find today many applications in different kinds of real-time working systems. To obtain short execution times in machine vision systems or in real-time decision-making systems, becomes a question of first importance. Therefore, the requirements to the recognition stage in such systems in reference to reduce the reaction time grow up. In this research, a neural network MLP structure is proposed for recognition of 2D objects intended for implementation in a real-time working system, based on PLC modules. A new method for choosing the appropriate input set and optimizing the MLP structure with the aim to reduce the execution time is developed. The method is tested with different kinds of captured 2D objects for real-time work of a PLC S7-314. The achieved good results give approve that the proposed method could be applied in other real-time systems.
Towards Seamless Handovers in SSM Source Mobility An Evaluation of the Tree Morphing Protocol
Authors: Olaf Christ, Thomas C. Schmidt, Matthias Wählisch
Venue: Proceedings of the 2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies (2008)

Multimedia networking in the near future is expected to be dominated by group applications such as IPTV, MMORPGs, and video conferencing. Hand in hand with new service offers, the deployment of multicast at the network layer startet to disseminate. Currently infotainment is gradually expanding into the mobile world, but a standard design of mobile multicast is still awaited. The traditional Internet approach of Any Source Multicast (ASM) routing remains hesitant to spread beyond walled gardens. It is widely believed that simpler and more selective mechanisms for group distribution in Source Specific Multicast (SSM) will globally disseminate to many users of multicast infrastructure and services. In this paper we present and discuss an extensive evaluation of the Tree Morphing Protocol, which has been designed to facilitate seamless handovers for mobile SSM sources. Based on a full protocol implementation on a network simulator platform, we extensively explore the protocol performance. By employing artificial networks to cover fundamental topological constellations, as well as real-world network topologies, we analyze the handover behavior conceptually and in realistic scenarios. Strengths and weaknesses of the routing scheme are identified, leading to a discussion on future improvements.
Indexing and Retrieving Motions of Characters in Close Contact
Authors: Edmond S. L. Ho, Taku Komura
Venue: IEEE Transactions on Visualization and Computer Graphics (2009)

Human motion indexing and retrieval are important for animators due to the need to search for motions in the database which can be blended and concatenated. Most of the previous researches of human motion indexing and retrieval compute the Euclidean distance of joint angles or joint positions. Such approaches are difficult to apply for cases in which multiple characters are closely interacting with each other, as the relationships of the characters are not encoded in the representation. In this research, we propose a topology-based approach to index the motions of two human characters in close contact. We compute and encode how the two bodies are tangled based on the concept of rational tangles. The encoded relationships, which we define as {\it TangleList}, are used to determine the similarity of the pairs of postures. Using our method, we can index and retrieve motions such as one person piggy-backing another, one person assisting another in walking, and two persons dancing / wrestling. Our method is useful to manage a motion database of multiple characters. We can also produce motion graph structures of two characters closely interacting with each other by interpolating and concatenating topologically similar postures and motion clips, which are applicable to 3D computer games and computer animation.
A neural network-based estimation of electric fields along high voltage insulators
Authors: Zafer Aydogmus
Venue: Expert Systems with Applications: An International Journal (2009)

This paper presents a two-dimensional (2D) electric fields estimation program to calculate the field distribution along the leakage distance of an insulator under polluted conditions using artificial neural network (ANN). A fog type suspension insulator has been used for calculations. Two types of application are submitted for validation of the model. Firstly, electric fields have been calculated for different line voltages and pollution conductivities using finite element method (FEM). Some of the calculated data sets have been used for training the ANN and the other sets of data have been used for testing. The x, y coordinates and operating voltage have been used as inputs of ANN1 to estimate the electrical fields on the insulator surface for first application. And x, y coordinates and pollution level of the surface have been used as inputs of ANN2 to estimate the electrical fields on the insulator surface for second application. These developed models make it possible to determine the electrical fields easier and shortens the calculation time. The results show that the estimated values of electrical field have been obtained with high levels of accuracy in both models. Thus, presented ANN models can be used efficiently for designing and developing of the insulators for various line voltages and pollution levels.
Visual Tracking Using Particle Filters with Gaussian Process Regression
Authors: Hongwei Li, Yi Wu, Hanqing Lu
Venue: Proceedings of the 3rd Pacific Rim Symposium on Advances in Image and Video Technology (2009)

Particle degeneracy is one of the main problems when particle filters are applied to visual tracking. The effective solution methods on the degeneracy phenomenon include good choice of proposal distribution and use of resampling. In this paper, we propose a novel visual-tracking algorithm using particle filters with Gaussian process regression and resampling techniques, which effectively abate the influence of particle degeneracy and improve the robustness of visual tracking. The main characteristic of the proposed algorithm is that we incorporate particle filters with Gaussian process regression which can learn highly effective proposal distributions for particle filters to track the visual objects. Experimental results in challenging sequences demonstrate the effectiveness and robustness of the proposed method.
Market-based grid resource allocation using a stable continuous double auction
Authors: Zhu Tan, John R. Gurd
Venue: Proceedings of the 8th IEEE/ACM International Conference on Grid Computing (2007)

A market-based Grid resource allocation mechanism is presented and evaluated. It takes into account the architectural features and special requirements of computational Grids while ensuring economic efficiency, even when the underlying resources are being used by self-interested and uncooperative participants. A novel Stable Continuous Double Auction (SCDA), based on the more conventional Continuous Double Auction (CDA), is proposed for Grid resource allocation. It alleviates the unnecessarily volatile behaviour of the CDA, while maintaining other beneficial features. Experimental results show that the SCDA is superior to the CDA in terms of both economic efficiency and scheduling efficiency. The SCDA delivers continuous matching, high efficiency and low cost, allied with low price volatility and low bidding complexity. Its ability to deliver immediate allocation and its stable prices facilitate co-allocation of resources and it also enables incremental evolution towards a full Grid resource market. Effective market-based Grid resource allocation is thus shown to be feasible.
Simulation of the production and distribution planning with risk
Authors: Kuentai Chen, Hung-Chun Chen, Z. H. Che
Venue: Proceedings of the 12th WSEAS international conference on Computers (2008)

As real world supply chain planning always involves uncertainty in demand and various risks, it is a crucial issue for both suppliers and customers. In this research, a mathematic model of supply chain with risk and uncertain demand are established and then solved. The inherent complexity of such a model leads to the solving difficulty in finding exact and integer optimal solutions. Therefore, a fast and acceptable answer becomes urgent when we have to pace up with the competitive business world, even it is only an approximate estimate. Four types of model are discussed in this study, including certain demand without risk, certain demand with risk, uncertain demand without risk, and uncertain demand with risk. After model verification and validation, computer simulations are performed with three selecting policies, namely "low cost first", "random", and "minimum cost path". The results are analyzed and compared, in which the "minimum cost path" is the better policy for node selection in simulation. A general linear programming solver called LINDO was used to find the optimal solutions but took days as the problem size increases, while simulation model obtains an acceptable solution in minutes. For small size problems, numerical examples show that the Mean Absolute Percentage Error (MAPE) between integer simulation solution and mathematical non-integer solution falls into the range of 3.69% to 7.34%, which demonstrates the feasibility and advantage of using simulation for supply chain planning.
High data rate inter-satellite-communication system SOLACOS
Authors: K. Pribil, J. Krieger, C. Meier, M. Stolze, Th. Majewski, Th. Müller, R. Pruchner
Venue: Space Communications (1998)

We describe the realization of the Lasercomm on-ground verification system SOLACOS and the current development status. SOLACOS comprises the hardware development of 2 optical terminals and the test infrastructure to test the performance of this system in on-ground experiments. In SOLACOS we implement a coherent 650 MBit/s transmission channel based on coherent Syncbit data transmission technology and on Nd$\,{:}\,$YAG solid state lasers, a diode-laser based 10 MBit/s ASK transmission system and a fully functional PAT system for an inter-orbit-link application. In parallel to the hardware activities, a computer simulation model of the system is realized. The main goal of SOLACOS is to match the predictions from the simulation to the real-world results from the hardware.
Distributional Features for Text Categorization
Authors: Xiao-Bing Xue, Zhi-Hua Zhou
Venue: IEEE Transactions on Knowledge and Data Engineering (2009)

Text categorization is the task of assigning predefined categories to natural language text. With the widely used 'bag of words' representation, previous researches usually assign a word with values such that whether this word appears in the document concerned or how frequently this word appears. Although these values are useful for text categorization, they have not fully expressed the abundant information contained in the document. This paper explores the effect of other types of values, which express the distribution of a word in the document. These novel values assigned to a word are called {\it distributional features}, which include the compactness of the appearances of the word and the position of the first appearance of the word. The proposed distributional features are exploited by a {\it tfidf} style equation and different features are combined using ensemble learning techniques. Experiments show that the distributional features are useful for text categorization. In contrast to using the traditional term frequency values solely, including the distributional features requires only a little additional cost, while the categorization performance can be significantly improved. Further analysis shows that the distributional features are especially useful when documents are long and the writing style is casual.
Impulsive control of bifurcations
Authors: Feng Liu, Zhi-Hong Guan, Hua O. Wang, Yuqing Li
Venue: Mathematics and Computers in Simulation (2009)

In this paper, an impulsive control of bifurcations method is developed. Sufficient conditions for the asymptotical stability of an impulsive control system are derived. Comparison has been made between it and a typical feedback control method. Numerical simulations are cited to illustrate the methodology and to verify the theoretical results.
Model-Checking the Linux Virtual File System
Authors: Andy Galloway, Gerald Lüttgen, Jan Tobias Mühlberg, Radu I. Siminiceanu
Venue: Proceedings of the 10th International Conference on Verification, Model Checking, and Abstract Interpretation (2008)

This paper presents a case study in modelling and verifying the Linux Virtual File System (VFS). Our work is set in the context of Hoare's verification grand challenge and, in particular, Joshi and Holzmann's mini-challenge to build a verifiable file system. The aim of the study is to assess the viability of retrospective verification of a VFS implementation using model-checking technology. We show how to extract an executable model of the Linux VFS implementation, validate the model by employing the simulation capabilities of SPIN, and analyse it for adherence to data integrity constraints and deadlock freedom using the SMART model checker.
Truthful Surveys
Authors: Nicolas Lambert, Yoav Shoham
Venue: Proceedings of the 4th International Workshop on Internet and Network Economics (2008)

We consider the problem of truthfully sampling opinions of a population for statistical analysis purposes, such as estimating the population distribution of opinions. To obtain accurate results, the surveyor must incentivize individuals to report unbiased opinions. We present a rewarding scheme to elicit opinions that are representative of the population. In contrast with the related literature, we do not assume a specific information structure. In particular, our method does not rely on a common prior assumption.
Coded cooperation diversity for uncoded oversampled OFDM systems
Authors: Alireza Rahmati, Paeiz Azmi
Venue: Signal Processing (2009)

Recently, user-cooperation diversity has been introduced as an effective scheme that can bring about antenna diversity in wireless networks. In this paper, we introduce a coded cooperation diversity technique for single antenna uncoded orthogonal frequency division multiplexing (OFDM) systems, in which implementation of coded cooperation is provided by the oversampling potential in OFDM, instead of using extra channel coding. In fact, zero-padding followed by IFFT in OFDM is similar to oversampling and could be an alternative to applying correction codes. Furthermore, we use this oversampling to implement an iterative receiver at the partner terminal. This receiver works based on the nonuniform sampling theorem for reconstructing of lost symbols. The lost symbols appear at the partner terminal of cooperative network because of dividing each OFDM block into two segments through the puncturing at the user terminal of the cooperative network. We provide simulation results for our proposed scenario, and observe significant gains over the non-cooperative oversampled OFDM systems without any need whatever for using extra channel coding.
SOFTWARE METRICS, TOWARD BUILDING PREDICTION MODELS
Authors: Izzat Alsmadi
Venue:  (2008)

This book includes the details about a project for developing a software metric tool to gather several code metrics from most of the known types of codes such as .cs, .vb, .java, .html, .c, .h, .cpp, .jsp, ..etc.). The book also includes guidelines to build software prediction model to be used for cost estimation. A prediction model in a company utilizes the earlier projects and gather the metrics from them in order to be able to make cost and project plannings for future ones. The book includes the different stages of development such as requirements gathering, design, implementation and testing. The project related to this paper was originally developed to Honeywell aviation as they were trying to make usage of their large number of earlier projects as a guidance for newer projects. This can be easy as it is used and measured by the same company. In general a limitation in the prediction model is that we cant always apply models from different companies or industry sectors.
"structured creature": a prototype for interactive architecture
Authors: Yosuke Ushigome, Kunihiro Nishimura, Michitaka Hirose
Venue: Proceedings of the 2008 International Conference on Advances in Computer Entertainment Technology (2008)

This work, named "structured creature" is a prototype of moving space structure and is a so flexible structure that "structured creature" wriggles slowly, rising and collapsing repetitively. It gives a strong presage of the future where physical space completely corresponds to the subjective space that people perceive.
Differences in the Visual Design Language of Paper-and-Pencil Surveys Versus Web Surveys
Authors: Marek Fuchs
Venue: Social Science Computer Review (2009)

Respondents in self-administered, paper-based surveys answer open-ended frequency questions differently depending on the size of the response field provided. Longer fields increase the proportion of alphanumeric elaborations or answers explicitly designated as an estimate (``about 20,'' ``60-70''). By contrast, shorter fields yield higher proportions of pure digit responses. It is assumed that respondents interpret the size of the response field as an instruction regarding the format of the expected answer. In this article, the authors assess the effect of the length of the response field in a web survey compared to a paper-and-pencil questionnaire. Results indicate that the effect of the length of the response field is more pronounced in the paper-and-pencil condition compared to the web survey condition. This raises the question as to what extent the underlying visual design language differs across self-administered survey modes.
xtel: a development environment to support rapid prototyping of "ubiquitous content"
Authors: Satoru Tokuhisa, Takaaki Ishizawa, Yoshimasa Niwa, Kenji Kasuya, Atsuro Ueki, Sho Hashimoto, Kazuhiko Koriyama, Masa Inakage
Venue: Proceedings of the 3rd International Conference on Tangible and Embedded Interaction (2009)

This paper describes the "xtel" development environment for "Ubiquitous Content". Ubiquitous contents are real space applications that are embedded in day-to-day life and intended for use by consumers. This is content that is experienced through interaction with people, objects and environments that exist in real space. Xtel comprises three tools: the "moxa" MCU board that connects to sensors and actuators and is capable of short-distance wireless communications; the "Talktic" programming/runtime environment for the MCU board that contains a JavaScript parser, compiler, VM and library; and the "Entity Collaborator" P2P network library that is capable of handling continuous information such as video and audio in addition to the discrete information from sensors. Its use both accelerates development and makes development itself easier. As sample applications, this paper also contains an overview of three rapid prototypes developed for use in demonstrations at Maker Faire 2008.
Vector Graphics Rendering on Mobile Device
Authors: Bi-shi He, Xiao-liang Xu, Tao Zheng
Venue: Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 03 (2009)

In order to solve the lower performance of vector graphics rendering on mobile device. The path generation and drawing in OpenVG is researched. After analyzing the OpenVG rendering pipeline, accelerated rendering methods are presented in three major aspects: rasterizer, tessellate and mathematical function. Experimental results indicate that the time of tessellation and rasterization is reduced. When applied to VG samples, the algorithm results in improved performance and good visual quality graphics.
Computational linguistics for metadata building (CLiMB): using text mining for the automatic identification, categorization, and disambiguation of subject terms for image metadata
Authors: Judith L. Klavans, Carolyn Sheffield, Eileen Abels, Jimmy Lin, Rebecca Passonneau, Tandeep Sidhu, Dagobert Soergel
Venue: Multimedia Tools and Applications (2009)

In this paper, we present a system using computational linguistic techniques to extract metadata for image access. We discuss the implementation, functionality and evaluation of an image catalogers' toolkit, developed in the Computational Linguistics for Metadata Building (CLiMB) research project. We have tested components of the system, including phrase finding for the art and architecture domain, functional semantic labeling using machine learning, and disambiguation of terms in domain-specific text vis a vis a rich thesaurus of subject terms, geographic and artist names. We present specific results on disambiguation techniques and on the nature of the ambiguity problem given the thesaurus, resources, and domain-specific text resource, with a comparison of domain-general resources and text. Our primary user group for evaluation has been the cataloger expert with specific expertise in the fields of painting, sculpture, and vernacular and landscape architecture.
Treating Unresolvable Flame Physics in Simulations of Thermonuclear Supernovae
Authors: Dean M. Townsley
Venue: Computing in Science and Engineering (2009)

Due to the small width of the subsonic burning front (flame) in thermonuclear supernovae, micrometers to centimeters, and the influence of turbulence, which adds structure to this front on a broad range of scales, it won't be possible in the foreseeable future to resolve the burning front in full-star simulations with typical scales of thousands of kilometers. This problem is far from unique to astrophysics. In many hydrodynamic studies in the laboratory, including pre-mixed combustion, the viscous scale, at which turbulence is dissipated, and the reaction front can't be resolved in simulations of realistic applications. Under these circumstances, so-called large eddy simulations (LES) are used, which employ models in place of unresolved physics. The adaptation and usage of models for unresolved turbulence and turbulence-flame interaction in simulations of thermonuclear supernovae is discussed. The author contrasts several models in current usage and discusses where there appears to be room for progress.