ppxscal/embedding_network huggingface dataset:
Discovering the rare opportunity by strategy based interactive value-focused thinking model
Authors: Chao-Fu Hong
Venue: International Journal of Knowledge-based and Intelligent Engineering Systems (2007)

In this study, opportunities based on the associative relationships, defined as Interactive Value-Focused Thinking Model (IVFT), were discovered. This system combined opportunities, defined by middle occurring frequency but with high link's entropy, with the associative relationships, which supplied the opportunity map to an analyst to create a meaningful scenario. Initially, the analyst thought that the short wavelength laser diode would be an important technology in the next generation DVD products, so he defined "blu-ray" as the strategic factor. Using KeyGraph and the strategic factor analysis, the IVFT system suggests that Toshiba has strong potential to be the leader in the next generation DVD industry. In addition, two kinds of rare opportunities, defined by low occurring frequency but with high link's entropy, were next discovered using entropy analysis of keywords links: 1. Investor's scenario, supported by the opportunity graph, under video and audio scenario "JVC" was emerged out, which was connected to the most important enterprises and technologies in the associative (opportunity) map. 2. Innovating scenario, constructed by the opportunity graph, in which only the special chemical technologies were connected to "Eternal" for emerging out the scenario of niche market. These experimental results indicate that this model could discover two kinds of opportunity, predictable and rare opportunities, based on both the data driving and the analyst's scenario recognizing the chance.
Implementation of a regulatory gene network to simulate the TH1/2 differentiation in an agent-based model of hypersensitivity reactions
Authors: Daniele Santoni, Marco Pedicini, Filippo Castiglione
Venue: Bioinformatics (2008)

Motivation: An unbalanced differentiation of T helper cells from precursor type TH0 to the TH1 or TH2 phenotype in immune responses often leads to a pathological condition. In general, immune reactions biased toward TH1 responses may result in auto-immune diseases, while enhanced TH2 responses may cause allergic reactions. The aim of this work is to integrate a gene network of the TH differentiation in an agent-based model of the hyper-sensitivity reaction. The implementation of such a system introduces a second level of description beyond the mesoscopic level of the inter-cellular interaction of the agent-based model. The intra-cellular level consists in the cell internal dynamics of gene activation and transcription. The gene regulatory network includes genes-related molecules that have been found to be involved in the differentiation process in TH cells. Results: The simulator reproduces the hallmarks of an IgE-mediated hypersensitive reaction and provides an example of how to combine the mesoscopic level description of immune cells with the microscopic gene-level dynamics. Availability: The basic version of the simulator of the immune response can be downloaded here: http://www.iac.cnr.it/~filippo/C-ImmSim.html Contact: f.castiglione@iac.cnr.it Supplementary information:Supplementary data are available at Bioinformatics online.
Characterization of thin film transistors fabricated on different sequential lateral solidified poly-silicon substrates
Authors: L. Michalas, G. J. Papaioannou, D. N. Kouvatsos, F. V. Farmakis, A. T. Voutsas
Venue: Microelectronic Engineering (2008)

Polycrystalline silicon quality is a key issue parameter for the performance and reliability of thin film transistors. Therefore in the present work, the material related electrical properties of TFTs fabricated on films crystallized by two different SLS-ELA procedures, 1-shot/overlapped irradiated, yielding different film textures, are investigated. The study employed devices with channel alighted across different orientation on the film. The transfer characteristics have been recorded and analyzed in the linear operation regime and temperature range of 120-440K. The temperature dependence of typical parameters such as the sub-threshold swing and the leakage current is determined by the thermal generation of carriers through bang gap states, thus this study could provide information on the nature of these states. Furthermore the temperature dependence of mobility is related to scattering processes. The results suggest that TFTs fabricated on overlapped irradiated crystallized films exhibit similar performance independent of the channel orientation, while the highest mobility overall is obtained in devices fabricated across the preferable direction of 1-shot irradiated crystallized films.
An improved contrast enhancing approach for color-to-grayscale mappings
Authors: Giovane R. Kuhn, Manuel M. Oliveira, Leandro A. F. Fernandes
Venue: The Visual Computer: International Journal of Computer Graphics (2008)

Despite the widespread availability of color sensors for image capture, the printing of documents and books are still primarily done in black-and-white for economic reasons. In this case, the included illustrations and photographs are printed in grayscale, with the potential loss of important information encoded in the chrominance channels of these images. We present an efficient contrast enhancement algorithm for color-to-grayscale image conversion that uses both luminance and chrominance information. Our algorithm is about three orders of magnitude faster than previous optimization-based methods, while providing some guarantees on important image properties. More specifically, our approach preserves gray values present in the color image, ensures global consistency, and locally enforces luminance consistency. Our algorithm is completely automatic, scales well with the number of pixels in the image, and can be efficiently implemented on modern GPUs. We also introduce an error metric for evaluating the quality of color-to-grayscale transformations.
Modelling the volatility transmission and conditional correlations between A and B shares in forecasting value-at-risk
Authors: Bernardo da Veiga, Felix Chan, Michael McAleer
Venue: Mathematics and Computers in Simulation (2008)

The aim of this paper is to investigate the effect of the Chinese B share market reform on the conditional correlation and information transmission between A and B Shares issued in the Shanghai and Shenzen stock exchanges. Daily returns for the Shanghai A share index (SHA), Shanghai B share index (SHB), Shenzen A share index (SZA) and Shenzen B share index (SZB) are used for the period 6 October 1992 to 8 February 2005. The impact of the reform on the volatility spillovers and volatility transmission were found to be significant. The results also suggest that all pairs of conditional correlations increase dramatically over the period analysed, but such increases began well before the reforms to the B share market. The importance of accommodating such an increase in conditional correlations and changes in the information transmission mechanism when estimating value-at-risk (VaR) thresholds is analysed. The results suggest that accommodating the B share market reform may not be particularly important in empirical analyses of volatility transmission.
Pro Web 2.0 Application Development with GWT (Pro)
Authors: Jeff Dwyer
Venue:  (2008)

The main focus of Pro Web 2.0 Application Development with GWT is a case study of a real Web 2.0 application called ToCollege.net. What youll learn: Youll take a full tour of a modern Web 2.0 startups codebase. Thats 15,000 lines of source code that includes everything from Google Gears integration to Acegi OpenID, Lucene fulltext search, and Google Maps, all of it integrated with GWT 1.5. Leveraging this books available source code, youll see the nittygritty details of how to merge a modern Web 2.0 application stack including Hibernate, Spring, Spring MVC 2.5, SiteMesh, and Freemarker together. Youll see how to wire GWT into an industry standard Maven build environment, which will help you get up to speed quickly and avoid configuration headaches. The great pitfall of many Ajax applications is theyre mostly opaque to search engines. Youll see the ToCollege.net solution to this thorny problem. Protection from XSS and XSRF attacks is beyond the scope of simple GWT tutorials, but they are a real concern for a site like ToCollege.net. The book will cover the ToCollege.net security architecture in detail. Who is this book for? This book is for developers who are ready to move beyond small proofofconcept sample applications and want to look at the issues surrounding a real deployment of GWT. If you want to see what the guts of a fullfledged GWT application look like, this is the book for you. GWT 1.5 is a gamechanging technology, but it doesnt exist in a bubble. Real deployments need to connect to your database, enforce authentication, provide protection from security threats, and allow good search engine optimization. To show you all this, this book looks at the code behind a real live web site called ToCollege.net. This application specializes in helping students who are applying to colleges, allowing them to manage their application process and compare the rankings that they give to each school. Its a slick application thats ready for you to sign up and use. The audience for this book either owns another GWT book for the basic tutorials or is comfortable using the online documentation and forums when theyre stuck, which allows this book to move quickly and focus on answering the bigger architecture questions. About the Apress Pro Series The Apress Pro series books are practical, professional tutorials to keep you on and moving up the professional ladder. You have gotten the job, now you need to hone your skills in these tough competitive times. The Apress Pro series expands your skills and expertise in exactly the areas you need. Master the content of a Pro book, and you will always be able to get the job done in a professional development project. Written by experts in their field, Pro series books from Apress give you the hardwon solutions to problems you will face in your professional programming career.
Bit-stream allocation methods for wavelet based scalable video coding
Authors: Toni Zgaljic, Nikola Sprljan, Ebroul Izquierdo
Venue: Proceedings of the 2nd international conference on Mobile multimedia communications (2006)

In wavelet based scalable video coding quality scalability is achieved using bit-plane coding techniques that result in embedded bit-stream. In order to minimise distortion when specific bit-rate is targeted, compressed data has to be optimally truncated in different layers that comprise the bit-stream. In this paper two methods for compressed bit-stream allocation are presented. First adopts assumption that same fractional bit-planes within same bit-planes of different wavelet subbands have nearly equal rate-distortion slopes, while the other takes into account the distortion caused by the quantisation of wavelet coefficients. First method is characterised by low complexity since distortion does not have to be assessed. For the second method, a simple yet effective statistical distortion model is derived. The experimental results show comparable performance of the two tested methods.
Short note on two output-dependent hidden Markov models
Authors: Jing-Hao Xue, D. Michael Titterington
Venue: Pattern Recognition Letters (2008)

The purpose of this note is to study the assumption of ''mutual information independence'', which is used by Zhou [Zhou, G.D., 2005. Direct modelling of output context dependence in discriminative hidden Markov model. Pattern Recognition Lett. 26 (5), 545-553] for deriving an output-dependent hidden Markov model, the so-called discriminative HMM (D-HMM), in the context of determining a stochastic optimal sequence of hidden states. The assumption is extended to derive its generative counterpart, the G-HMM. In addition, state-dependent representations for two output-dependent HMMs, namely HMMSDO [Li, Y., 2005. Hidden Markov models with states depending on observations. Pattern Recognition Lett. 26 (7), 977-984] and D-HMM, are presented.
Are ultra-large systems systems of systems?
Authors: Ivica Crnkovic
Venue: Proceedings of the 2nd international workshop on Ultra-large-scale software-intensive systems (2008)

Ultra Large Systems are characterized by its complexity, size, diversity of concerns and missions. As complexity of systems grows and the demands on interoperability between them grow, the concerns of how to build, maintain and manage them becomes more important. It is however a question how this complexity can be managed, or how the complexity can be simplified. A second question is related to a question whether an ultra-large system is the same as ultra-large integration of systems, i.e. systems of systems? In this short position paper we exploit a hypothesis that ultra-large systems are either loosely integrated systems and in that case they should be treated as systems of systems, or tight-coupled systems and in that case they should have an layered architecture. As illustration, the paper shows some examples from Scandinavian industry that manage systems which are approaching the size of ultra-large systems.
Tunable Current-Mode Multifunction Filter Using Universal Current Conveyors
Authors: Norbert Herencsar, Kamil Vrba
Venue: Proceedings of the Third International Conference on Systems (2008)

In the paper a novel current-mode multifunction filter is presented, where changing the characteristic frequency f0 and the quality factor Q0 independently of each other and of other parameters is allowed. The whole design procedure is shown, with the Generalized Current Conveyor (GCC) being used in the initial design and the resultant multifunction filter containing the Universal Current Conveyor UCC-N1B. On the basis of measurement results of this element a simulation model in the OrCAD software for computer analysis of the properties of the filter designed was proposed.
cutting|Plane: an interactive tool for exploration of 3D datasets via slicing
Authors: Attila M. Zsaki
Venue: Proceedings of the 2008 C3S2E conference (2008)

The interpretation of results of analysis often requires considerable resources; both hardware and human expertise and time. Many disciplines generate three-dimensional volume datasets that need to be explored to observe structure and trends in key variables. This paper presents a coupled hardware-software approach for aiding data interpretation by cutting the dataset with a plane. The developed device can be held by the user and interactively manipulated to re-orient the cutting plane and observe trends in the data. As a practical application of the device, three-dimensional stress analysis results were explored using the device resulting in an increased efficiency of interaction and interpretation.
Effective realization of on-chip fault-tolerance utilizing BIST resources
Authors: Sumit Dharampal Mediratta, Jeffrey Draper
Venue: Proceedings of the 5th WSEAS International Conference on Circuits, Systems, Electronics, Control & Signal Processing (2006)

Widespread reliability challenges are expected for 65nm and below VLSI fabrication technologies. On-chip fault-tolerance solutions are required to counter reliability challenges. A new post-fabrication reconfigurable and scalable approach of achieving on-chip fault-tolerance, using built-in-self-test (BIST) resources, has been proposed by the authors. This paper gives more insight into the proposed approach by considering issues pertaining to its efficient and effective realization and giving a methodology of using the proposed approach for desired design objectives. It also provides effective methods to address BIST faults and the split-brain problem. The proposed approach reduces production cost, implementation overhead and time-to-market; increases reusability, post-fabrication reconfigurability and productivity; and is scalable across multiple VLSI processes and feature sizes. This will result in obvious advantages of yield enhancement and prolonged lifetime of VLSI chips as well.
A Survey of State of the Art Biomedical Text Mining Techniques for Semantic Analysis
Authors: Hong-Jie Dai, Chi-Hsin Huang, Jaimie Yi-Wen Lin, Pei-Hsuan Chou, Richard Tzong-Han Tsai, Wen-Lian Hsu
Venue: Proceedings of the 2008 IEEE International Conference on Sensor Networks, Ubiquitous, and Trustworthy Computing (sutc 2008) (2008)

The abstract is to be in fully-justified italicized text, at the top of the left-hand column as it is here, below the author information. Use the word "Abstract" as the title, in 12-point Times, boldface type, centered relative to the column, initially capitalized. The abstract is to be in 10-point, single-spaced type, and up to 150 words in length. Leave two blank lines after the abstract, then begin the main text.
Optimal Genes Selection with a New Multi-objective Evolutional Algorithm Hybriding NSGA-II with EDA
Authors: Luo Fei, Liu Juan
Venue: Proceedings of the 2008 International Conference on BioMedical Engineering and Informatics - Volume 01 (2008)

Recent studies on molecular level classification of tissues with DNA microarray technology have produced remarkable results. It is believed that the subtypes of cancer can be distinguished by a set of discriminative genes. To achieve this goal, it not only requires high enough classification accuracy, but also a minimal number of genes as much as possible to lower cost. Meanwhile, the number of samples from different tissues may differ greatly. Therefore, it should also avoid classification bias due to unbalance sample number in different classes. In this paper, we propose a new multi-objective evolutional algorithm (MOEA) framework to select optimal genes, which has both advantages of the non-dominated sorting genetic algorithm II (NSGA-II) and the estimation of distribution algorithm (EDA). Finally, experiment on the data is done, The result shows that our method has good performance.
Web tool to support online inquiries: adapting Moodle to meet some of tutors and teachers needs
Authors: V. J. E. Miguel, S. M. M. Guerreiro, R. P. C. do Nascimento
Venue: Proceedings of the 2007 Euro American conference on Telematics and information systems (2007)

E-Learning is today a reality adopted by many organizations and schools around the world. With the increased use of E-Learning, Learning Management Tools are becoming more and more important, but often they fail to respond to particular or specific demands that differ from institution to institution. Even thought there is now a large variety of software available in this area, it's very important that Learning Management Environment software can be adapted to meet all these special requirements. The implementation of modules in Learning Management Tools can result in a powerful E-Learning tool, and can be the answer to customize it in a way that responds to some of the organization needs. These modules also allow tutors and teachers to focus more in the learning activities rather than on the software itself. In this article, we will discuss a case study: the Web Tool to Support Online Inquiries created by Tutors and Teachers. This tool consists on a module implemented in PHP and integrated with Moodle. It allows teachers and tutors to elaborate online inquiries and collect answers given by students or co-workers. This tool allows the teaching community to collect information that can be used as a start point to improve results on students or even on their institutions.
Estimation of Possible Reaction States in Metabolic Pathways Using Inductive Logic Programming
Authors: Yoshitaka Yamamoto, Katsumi Inoue, Andrei Doncescu
Venue: Proceedings of the 22nd International Conference on Advanced Information Networking and Applications - Workshops (2008)

This paper provides a method for estimating states of enzyme reactions in metabolic pathways. We first introduce a new model based on the logical viewpoint of enzyme function. The proposed model logically represents causal relations between concentration changes of metabolites and enzyme activities. When we observe the concentration changes of metabolites, we can assume which enzyme reactions are accelerated under the model. This computation can be realized using Inductive Logic Programming (ILP), which can find a hypothesis that accounts for given observations with a background theory. In this paper, we use CF-induction, which is an ILP technique and has a unique feature that can integrate inductive and abductive inferences. CF-induction can compute not only possible reaction states that can explain the observations, but also general rules that are missing in the current background theory. Then, we perform experiments with simple metabolic pathways, and confirm that CF-induction can both estimate states of reactions and discover new causal rules.
Privacy matters
Authors: Samuel Greengard
Venue: Communications of the ACM (2008)

As concerns about protecting personal data increase, differential privacy offers a promising solution.
An Enhanced Policy Model to Enable Autonomic Communications
Authors: Greg Cox, Joan Serrat, John Strassner, José Neuman de Souza, David Raymer, Srini Samudrala, Brendan Jennings, Keara Barrett
Venue: Proceedings of the Fifth IEEE Workshop on Engineering of Autonomic and Autonomous Systems (2008)

The Policy Expert Group of the Autonomic Communications Forum is working to enhance policy to enable flexible control of self-governed systems. The initial effort focuses on proposed enhancements to the DEN-ng policy model to serve as a baseline from which the ACF Policy Model can be developed. This enhanced policy model incorporates traditional (event-condition-action) and deontic policy representations for policy rules, and provides a modular distributed structure for policy applications.
Exploiting manufacturing variations for compensating environment-induced clock drift in time synchronization
Authors: Thomas Schmid, Zainul Charbiwala, Jonathan Friedman, Young H. Cho, Mani B. Srivastava
Venue: ACM SIGMETRICS Performance Evaluation Review (2008)

Time synchronization is an essential service in distributed computing and control systems. It is used to enable tasks such as synchronized data sampling and accurate time-of-flight estimation, which can be used to locate nodes. The deviation in nodes' knowledge of time and inter-node resynchronization rate are affected by three sources of time stamping errors: network wireless communication delays, platform hardware and software delays, and environment-dependent frequency drift characteristics of the clock source. The focus of this work is on the last source of error, the clock source, which becomes a bottleneck when either required time accuracy or available energy budget and bandwidth (and thus feasible resynchronization rate) are too stringent. Traditionally, this has required the use of expensive clock sources (such as temperature compensation using precise sensors and calibration models) that are not cost-effective in low-end wireless sensor nodes. Since the frequency of a crystal is a product of manufacturing and environmental parameters, we describe an approach that exploits the subtle manufacturing variation between a pair of inexpensive oscillators placed in close proximity to algorithmically compensate for the drift produced by the environment. The algorithm effectively uses the oscillators themselves as a sensor that can detect changes in frequency caused by a variety of environmental factors. We analyze the performance of our approach using behavioral models of crystal oscillators in our algorithm simulation. Then we apply the algorithm to an actual temperature dataset collected at the James Wildlife Reserve in Riverside County, California, and test the algorithms on a waveform generator based testbed. The result of our experiments show that the technique can effectively improve the frequency stability of an inexpensive uncompensated crystal 5 times with the potential for even higher gains in future implementations.