ppxscal/embedding_network huggingface dataset:
CourseCloud: summarizing and refining keyword searches over structured data
Authors: Georgia Koutrika, Zahra Mohammadi Zadeh, Hector Garcia-Molina
Venue: Proceedings of the 12th International Conference on Extending Database Technology: Advances in Database Technology (2009)

In this demo, we show data clouds that summarize the results of keyword searches over structured data. Data clouds provide insight into the database contents, hints for query modification and refinement and can lead to serendipitous discoveries of diverse results. In this demo paper: &bull; we summarize the main issues for generating data clouds &bull; we give an overview of our framework for keyword searching with summaries (clouds) &bull; we describe our system CourseCloud that allows searching for courses and their evaluation.
Turbocharging boosted transactions or: how i learnt to stop worrying and love longer transactions
Authors: Chinmay Eishan Kulkarni, Osman Unsal, Adrián Cristal, Eduard Ayguadé, Mateo Valero
Venue: ACM SIGPLAN Notices (2009)

Boosted transactions offer an attractive method that enables programmers to create larger transactions that scale well and offer deadlock-free guarantees. However, as boosted transactions get larger, they become more susceptible to conflicts and aborts. We describe a linear-time algorithm to detect transactions that cannot make progress, which transactions need to be aborted, and when. The algorithm guarantees zero false positives with minimal aborts. Our proposals, as implemented in DSTM2, increase the transactional throughput of the system, often by more than 30%.
Applying the OCRopus OCR System to Scholarly Sanskrit Literature
Authors: Thomas M. Breuel
Venue: Sanskrit Computational Linguistics: First and Second International Symposia Rocquencourt, France, October 29-31, 2007 Providence, RI, USA, May 15-17, 2008 Revised Selected and Invited Papers (2009)

OCRopus is an open source OCR system currently being developed, intended to be omni-lingual and omni-script. In addition to modern digital library applications, applications of the system include capturing and recognizing classical literature, as well as the large body of research literature about classics. OCRopus advances the state of the art in a number of ways, including the ability easily to plug in new text recognition and layout analysis modules, the use of adaptive and user extensible character recognition, and statistical and trainable layout analysis. Of particular interest for computational linguistics applications is the consistent use of probability estimates throughout the system and the use of weighted finite state transducers to represent both alternative recognition hypotheses and statistical language models. In this paper, I first give an overview of these technologies and their relevance to digital library applications in the humanities, and then focus on the use of statistical language models and their use for the integration of OCR output with subsequent computational linguistic and information extraction modules.
Strong Thread Migration in Heterogeneous Environment
Authors: Khandakar Entenam Unayes Ahmed, Md. Al-mamun Shohag, Tamim Shahriar, Md. Khalad Hasan, Md. Mashud Rana
Venue: Proceedings of the 2009 International Conference on Computer Engineering and Technology - Volume 01 (2009)

This paper provides a complete framework for thread migration using JPDA. In our framework neither we lose portability nor do we insert any artificial code. The system developed based on our framework needs no extra involvement of programming to continue the whole migration system. It is a powerful autonomous system for heterogeneous environment maintaining its portability since Java Virtual Machine (JVM) is not modified.
A methodology to minimise excessively permissive security configurations
Authors: Rukshan Athauda, Geoff Skinner, Brian Regan
Venue: Proceedings of the 8th conference on Applied computer scince (2008)

Today's complex IT systems and multitude of possible permission configurations create a challenge for IT administrators, especially in determining optimal permission configuration for user groups. This is further exaggerated with the users' privilege requirements not being clearly specified or available. This typically leads to excessively permissive security configurations in IT systems which results in security vulnerabilities. This paper proposes a methodology and high-level architecture for a system that enables to elicit and deploy IT permissions in a convenient and secure manner avoiding many pitfalls that exist today. The proposed methodology's applicability is illustrated using two scenarios: a typical organisation with complex security requirements and a collaborative online environment.
Effective Mobile Assets Management System Using RFID and ERP Technology
Authors: Chuan Jun Su
Venue: Proceedings of the 2009 WRI International Conference on Communications and Mobile Computing - Volume 03 (2009)

Advances in widespread, robust and inexpensive location and wireless communication technologies have resulted in an explosion of activities in the field of mobile services. Timely and relevant information enables informed decision-making and offers improvements for productivity, safety and security. One particular form of mobile service, known as Mobile Asset Management Systems (MAMS) has garnered significant interest from corporations desiring more efficient methods in managing their asset fleets. However, many still rely primarily on paper-based communications and tracking. The reliance on paperwork and data entry stands in the way of the maintenance staff's primary function. In this research, we propose a system that was designed for tagging valuable assets or equipment, providing asset location information, auditing and triggering for service, and retrieving maintenance requirements and procedure based on data in ERP. The proposed system is expected not only to streamline the process of mobile asset management but also to ensure the asset management tasks are faithfully carried in a timely fashion.
What drives continued knowledge sharing? An investigation of knowledge-contribution and -seeking beliefs
Authors: Wei He, Kwok-Kee Wei
Venue: Decision Support Systems (2009)

Knowledge management (KM) research has yielded extensive explanations regarding the individual's motivation to share knowledge, each with different sets of factors. Yet the study of continued knowledge sharing is rare. There has been little research investigating this issue from contributing and seeking perspectives-the two distinct, but closely interrelated, facets of continued knowledge sharing. We propose that knowledge management system (KMS) users' beliefs are contextually differentiated, and thus a distinction between knowledge-contribution and knowledge-seeking behaviors and an adequate emphasis on their variance in terms of user belief is needed. By incorporating the knowledge-contribution and knowledge-seeking perspectives in a single study, we model and examine the differences among driving factors in two behavioral contexts, provide the conceptual comparisons and preliminary discussions, and thus advance our understanding of continued knowledge sharing via the KMS.
Accelerating Template-Based Matching on the GPU for AR Applications
Authors: Yannick Allusse, Raphael Grasset, Mark Billinghurst
Venue: Proceedings of the 2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality (2007)

Recently researchers have shown that it is possible to use GPU hardware for image processing and computer vision algorithms. We have been exploring how to use GPU hardware to improve marker-based tracking for AR Applications. In this paper we describe our findings and explored issues in the context of a standard fiducial tracking pipeline. We demonstrate the implementation of a template matching process on the GPU and the performance improvement gained in comparison to a traditional CPU implementation.
Groupies in random graphs
Authors: W. Fernandez de la Vega, Zsolt Tuza
Venue: Information Processing Letters (2009)

A groupie in a graph G is a vertex whose valency is not less than the average of the valencies of its neighbours. We show that in a random graph, the proportion of the vertices which are groupies is almost always very near to 1/2.
Computer usage in daily life
Authors: Thomas Beauvisage
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

In this paper we explore the use of computer at home. This work is based on the automatic recording of application focus data in natural situation from a wide representative panel of 661 households with 1,434 users at home over 19 months. To process these large-scale data, we build a two-level classification of PC applications describing the whole PC use. At the household level, we worked on computer usage temporality: we observed two strategies of PC usage reflecting a tension between synchronous and asynchronous usage profiles. At the individual level, we found out that software preferences and usage intensity are rather independent; therefore, we distinguished five specific profiles of users reflecting strong routine behaviors of computer usage at home. These observations tend to show the strength of routine behaviors in computer usage.
Constant-current Soft Starting of Induction Motor Based on Fuzzy Control
Authors: Shufen Li, Zhihua Liu
Venue: Proceedings of the 2009 International Conference on Computer Engineering and Technology - Volume 02 (2009)

In this article, blurring control of induction motor during starting process is introduced. A specific fuzzy controller has been designed using two-input-outlet fuzzy control model. Both minimum hardware circuit of realizing fuzzy control centred on TA89C51 and block diagram of software program are given. In addition, experimental result is given.
PAMBE growth of (112¯2)-oriented GaN/AlN nanostructures on m-sapphire
Authors: L. Lahourcade, J. Renard, P. K. Kandaswamy, B. Gayral, M. P. Chauvat, P. Ruterana, E. Monroy
Venue: Microelectronics Journal (2009)

We report on the plasma-assisted molecular-beam epitaxial growth of (112@?2)-oriented GaN/AlN nanostructures on (11@?00) m-plane sapphire. Moderate N-rich conditions enable to synthesize AlN(112@?2) directly on m-sapphire, with in-plane epitaxial relationships [112@?3@?]"A"l"N@?[0001]"s"a"p"p"h"i"r"e and [11@?00]"A"l"N@?[112@?0]"s"a"p"p"h"i"r"e. In the case of GaN, a Ga-excess of one monolayer is necessary to achieve two-dimensional growth of GaN(112@?2). Applying these growth conditions, we demonstrate the synthesis of (112@?2)-oriented GaN/AlN quantum well structures, showing a strong reduction of the internal electric field. By interrupting the growth under vacuum after the deposition of few monolayers of GaN under slightly Ga-rich conditions, we also demonstrate the feasibility of quantum dot structures with this orientation.
Dither Modulation in the Logarithmic Domain
Authors: Pedro Comesaña, Fernando Pérez-González
Venue: Proceedings of the 6th International Workshop on Digital Watermarking (2008)

Scaling attacks are well-known to be some of the most harmful strategies against quantization-based watermarking methods, as they desynchronize the decoder, completely ruining the performance of the watermarking system with almost non perceptually altering the watermarked signal. In this paper we propose a new family of quantization-based methods, based on both Dither Modulation and Spread Transform Dither Modulation, oriented to deal with those attacks, and which presents another outstanding property: they produce perceptually shaped watermarks.
Comparison of NRZ and RZ modulations in laser intersatellite communication systems
Authors: N. Liu, W. D. Zhong, Y. He, K. H. Heng, T. H. Cheng
Venue: Proceedings of the 2008 International Conference on Advanced Infocomm Technology (2008)

Laser intersatellite communication (LIC) is a promising choice for intersatellite communication due to the high data rate that can be achieved with the advantages of light weight, smaller size and lower power consumption. In this paper, we compare the maximum transmission distance with non-return-to-zero (NRZ) and return-to-zero (RZ) modulations for two different LIC scenarios. Simulation results show that for the long-range LIC system with a saturated booster optical amplifier, the RZ modulation scheme can offer a longer transmission distance than the NRZ modulation scheme. For the short-range LIC system without an optical amplifier, the RZ modulation scheme performs almost the same as the NRZ modulation scheme.
An Edit-Distance Model for the Approximate Matching of Timed Strings
Authors: Simon Dobrišek, Janez Žibert, Nikola Pavešić, France Mihelič
Venue: IEEE Transactions on Pattern Analysis and Machine Intelligence (2009)

An edit-distance model that can be used for the approximate matching of contiguous and non-contiguous timed strings is presented. The model extends the concept of the weighted string-edit distance by introducing timed edit operations and by making the edit costs time dependent. Special attention is paid to the timed null symbols that are associated with the timed insertions and deletions. The usefulness of the presented model is demonstrated on the classification of phone-recognition errors using the TIMIT speech database.
Automated monitoring of software quality
Authors: J. A. Clapp, J. E. Sullivan
Venue: Proceedings of the May 6-10, 1974, national computer conference and exposition (1974)

Widespread acceptance of computer systems for commercial and military applications has led to widespread dissatisfaction with the software components of these systems. Major criticisms have focused on the high cost of development and maintenance, the slippages in delivery dates, and the poor quality of software. Those of us who produce software readily admit to these complaints since we ourselves have to rely on software to help us do our job and have experienced the same problems. We are equally ready to acknowledge that the solution to these problems lies in better management of software development, but we quickly claim that software development is harder to manage than other kinds of production processes.
Understanding Android Security
Authors: William Enck, Machigar Ongtang, Patrick McDaniel
Venue: IEEE Security and Privacy (2009)

Google's Android platform is a widely anticipated open source operating system for mobile phones. This article describes Android's security model and attempts to unmask the complexity of secure application development. The authors conclude by identifying lessons and opportunities for future enhancements.
Vers la pl&eacute;nitude de l'exp&eacute;rience utilisateur
Authors: Jean-Marc Robert
Venue: Proceedings of the 20th International Conference of the Association Francophone d'Interaction Homme-Machine (2008)

The HCI domain has registered a rapid growth since its inception (1978--1983). The result is that one can take advantage of a body of knowledge, methods, and tools to design high quality interfaces which can meet the requirements of activities to be carried out and satisfy the users' needs and expectations. Nonetheless, the challenges to take up are numerous to continue to innovate and develop our domain. The goal is not only to realize useful and usable interfaces that can stand out thanks to the intelligence of their interactivity, but also to create interactive objects that are remarkable by the values they carry out (e.g., hedonism) and by the capacity to generate a good user experience. In this paper, we analyze the transition occurring in the HCI, where one moves from a focus on interface usability on the more including concept of user experience with the interactive object. The idea from now on is to make room to the pleasure of interacting with technology, to intellectual stimulation, to the strength of the flow experience with the activity, to the pride of being successful, to the enrichment due to exchanges with others, to the attachment for the object, and to aesthetics.
Chi-Squares and the Phenomenon of "Change of Exemplar" in the Dyūtaparvan
Authors: Wendy J. Phillips-Rodriguez, Christopher J. Howe, Heather F. Windram
Venue: Sanskrit Computational Linguistics: First and Second International Symposia Rocquencourt, France, October 29-31, 2007 Providence, RI, USA, May 15-17, 2008 Revised Selected and Invited Papers (2009)

In this paper we investigate the use of computational tools in the textual analysis of Sanskrit manuscripts. We use the maximum chi-squared method, a technique borrowed from molecular biology, to analyse the distribution of variants in two different pairs of manuscripts of the Dyūtaparvan. This method gives some insight into the process of manuscript copying in the Mah¿bh¿ rata tradition. In particular it provides evidence that at least one of the scribes used more than one exemplar to produce his own version of the Mah¿bh¿ rata.
The impact of a realistic packet traffic model on the performance of surveillance wireless sensor networks
Authors: Ilker Demirkol, Cem Ersoy, Fatih Alagöz, Hakan Deliç
Venue: Computer Networks: The International Journal of Computer and Telecommunications Networking (2009)

It is quite common to see that classical periodic or Poisson packet traffic models are used for evaluating the performance of wireless sensor networks (WSNs). However, these models may not be appropriate for modeling the data traffic resulting from a particular application. Furthermore, they may be overestimating the performance of a WSN. In this paper, we show the significance of using a realistic and application-specific packet traffic model by comparing the performance of a well-known WSN protocol under the Surveillance WSN packet traffic model (SPTM), as well as under periodic and binomial traffic models. A packet traffic framework specific to surveillance applications is proposed which is then used for deriving SPTM analytically. In order to be adaptable and flexible, SPTM incorporates a probabilistic and parametric sensor detection model. Simulation results show that to employ an application-specific packet traffic model has significant impact on the performance evaluation of the WSN and ordinary traffic models may overestimate the capacity of the WSN.
Introduction to Derivative-Free Optimization
Authors: Andrew R. Conn, Katya Scheinberg, Luis N. Vicente
Venue:  (2009)

The absence of derivatives, often combined with the presence of noise or lack of smoothness, is a major challenge for optimization. This book explains how sampling and model techniques are used in derivative-free methods and how these methods are designed to efficiently and rigorously solve optimization problems. Although readily accessible to readers with a modest background in computational mathematics, it is also intended to be of interest to researchers in the field. Introduction to Derivative-Free Optimization is the first contemporary comprehensive treatment of optimization without derivatives. This book covers most of the relevant classes of algorithms from direct search to model-based approaches. It contains a comprehensive description of the sampling and modeling tools needed for derivative-free optimization; these tools allow the reader to better understand the convergent properties of the algorithms and identify their differences and similarities. Introduction to Derivative-Free Optimization also contains analysis of convergence for modified Nelder Mead and implicit-filtering methods, as well as for model-based methods such as wedge methods and methods based on minimum-norm Frobenius models. Audience: The book is intended for anyone interested in using optimization on problems where derivatives are difficult or impossible to obtain. Such audiences include chemical, mechanical, aeronautical, and electrical engineers, as well as economists, statisticians, operations researchers, management scientists, biological and medical researchers, and computer scientists. It is also appropriate for use in an advanced undergraduate or early graduate-level course on optimization for students having a background in calculus, linear algebra, and numerical analysis. Contents: Preface; Chapter 1: Introduction; Part I: Sampling and modeling; Chapter 2: Sampling and linear models; Chapter 3: Interpolating nonlinear models; Chapter 4: Regression nonlinear models; Chapter 5: Underdetermined interpolating models; Chapter 6: Ensuring well poisedness and suitable derivative-free models; Part II: Frameworks and algorithms; Chapter 7: Directional direct-search methods; Chapter 8: Simplicial direct-search methods; Chapter 9: Line-search methods based on simplex derivatives; Chapter 10: Trust-region methods based on derivative-free models; Chapter 11: Trust-region interpolation-based methods; Part III: Review of other topics; Chapter 12: Review of surrogate model management; Chapter 13: Review of constrained and other extensions to derivative-free optimization; Appendix: Software for derivative-free optimization; Bibliography; Index.
An HCI Scheme Based on Multi-list for Embedded System
Authors: Ningshe Zhao, GuoQing Wang, Zhengjun Zhai, Qiurong Wang
Venue: Proceedings of the 2009 International Conference on Computer Engineering and Technology - Volume 02 (2009)

Human-Computer Interaction (HCI) in embedded system is an issue concerned by many people. From the engineering point of view, by analyzing the scenario of embedded system, we propose the use of multi-list for HCI in embedded system. We have set up the model and implemented the system. Our engineering practice shows the effectiveness of this scheme.
Qualitative Spatio-temporal Reasoning about Moving Objects in Three-Dimensional Space
Authors: Jingde Cheng
Venue: Proceedings of the 3rd International Symposium on Advances in Computation and Intelligence (2008)

To represent and reason about moving objects in three-dimensional space qualitatively, we need a right fundamental logic system to provide us with a criterion of logical validity for reasoning as well as a formal representation language. In order to reason about new spatio-temporal knowledge with incomplete or sometime even inconsistent knowledge, the fundamental logic must be able to underlie relevant and truth-preserving reasoning in the sense of conditional, ampliative reasoning, paracomplete and paraconsistent reasoning, and spatio-temporal reasoning. This paper proposes a new family of three-dimensional spatio-temporal relevant logics as a hopeful candidate for the fundamental logic, and shows that the logics can satisfy all the requirements for the fundamental logic we need.
Evaluation of Sparse LU Factorization and Triangular Solution on Multicore Platforms
Authors: Xiaoye Sherry Li
Venue: High Performance Computing for Computational Science - VECPAR 2008: 8th International Conference, Toulouse, France, June 24-27, 2008. Revised Selected Papers (2008)

The Chip Multiprocessor (CMP) will be the basic building block for computer systems ranging from laptops to supercomputers. New software developments at all levels are needed to fully utilize these systems. In this work, we evaluate performance of different high-performance sparse LU factorization and triangular solution algorithms on several representative multicore machines. We include both pthreads and MPI implementations in this study, and found that the pthreads implementation consistently delivers good performance and a left-looking algorithm is usually superior.