ppxscal/embedding_network huggingface dataset:
Matrix representation of discrete quasi-copulas
Authors: I. Aguiló, J. Suòer, J. Torrens
Venue: Fuzzy Sets and Systems (2008)

In this paper discrete quasi-copulas (defined on a square grid I"n^2 of [0,1]^2) are studied and it is proved that they can be represented by means of a special class of matrices with entries in [-1,1]. Special considerations are made for the case of irreducible discrete quasi-copulas (those with range I"n), showing that they can be represented through alternating-sign matrices and that they generate all discrete quasi-copulas through convex sums. In the process, the number of irreducible quasi-copulas on I"n is given and those functions @d for which there exists a unique copula with @d as its diagonal section are characterized.
New methods for conducting experiments with mobile systems and services in the field
Authors: Kasper Løvborg Jensen
Venue: Proceedings of the 9th international conference on Human computer interaction with mobile devices and services (2007)

The main aim of this PhD study is to develop new methods for conducting field experiments to evaluate mobile systems and services. A framework is proposed for automatic and remote capture and analysis of usage and contextual data on the mobile devices. The paper presents and discusses the background, motivation and research goals for the study as well as the main problems and envisioned solutions. Also a brief status will be given including preliminary results.
The time-delay digital tanlock loop for demodulation of PM signals
Authors: Zahir M. Hussain
Venue: Proceedings of the 4th WSEAS International Conference on Signal Processing, Computational Geometry & Artificial Vision (2004)

We have recently proposed a nonuniform sampling digital tanlock loop (DTL) that utilizes a constant time-delay unit instead of the constant 90 degrees phase-shifter. It was shown that the new digital phase-locked loop (DPLL), called the time-delay digital tanlock loop (TDTL), reduces the complexity of implementation and avoids many of the practical problems associated with the digital Hilbert transformer, while it preserves the most important features of the conventional DTL (CDTL). In this paper we show that the TDTL is capable of demodulating phase and frequency modulated signals.
A Neurostimulator Design for Long-term Animal Experiments
Authors: Jingai Zhou, Se Joon Woo, Se Ik Park, Seung Woo Lee, Hum Chung, Sung June Kim
Venue: Proceedings of the 2007 Frontiers in the Convergence of Bioscience and Information Technologies (2007)

This article reports on a neural prosthesis stimulation system for long-term use in animal electrical stimulation experiments. The presented system consists of an implantable stimulator which provides continuous electrical stimulation, and an external component which provides preset stimulation parameters and power to the implanted stimulator via a paired RF (radio frequency) coil. A rechargeable internal battery and a parameter memory component were introduced to the implanted neural stimulator. As a result, the external component was not necessary during the stimulation cycles. The implantable stimulator was implemented with IC chips and the electronics, except for the stimulation electrodes, were hermetically packaged in a biocompatible metal case. A polyimide-based gold electrode array was used for realization of the animal implantation test using retinal prosthesis approach.
Load Sharing Topology Control Protocol for Harsh Environments in Wireless Sensor Networks
Authors: Hsu-Yang Kung, Chung-Ming Huang, Hao-Hsiang Ku, Yen-Ju Tung
Venue: Proceedings of the 22nd International Conference on Advanced Information Networking and Applications (2008)

Energy conservation and network performance are the critical issues in wireless sensor networks (WSNs). This study designed and developed a novel communication efficient topology control protocol, which calls Load Sharing Topology Control Protocol (LS-TCP). LS-TCP is a well-designed protocol, including selecting suitable communication nodes, adjusting service loads of critical nodes, and adaptively sleeping management. LS-TCP is suitable for harsh environments without sensor identifications (ID) and locations. The proposed protocol principally divides the topology operation into topology formation phase and topology adjustment phases. In the topology formation phase, a enhance tree are set up. In the topology adjustment phase, enhance tree is adjusted with an optimal balance of critical nodes in backbone. Simulation results are performed using LS-TCP, which efficiently achieve much longer system life time in harsh environments.
Natural language watermarking via morphosyntactic alterations
Authors: Hasan Mesut Meral, Bülent Sankur, A. Sumru Özsoy, Tunga Güngör, Emre Sevinç
Venue: Computer Speech and Language (2009)

We develop a morphosyntax-based natural language watermarking scheme. In this scheme, a text is first transformed into a syntactic tree diagram where the hierarchies and the functional dependencies are made explicit. The watermarking software then operates on the sentences in syntax tree format and executes binary changes under control of Wordnet and Dictionary to avoid semantic drops. A certain level of security is provided via key-controlled randomization of morphosyntactic tools and the insertion of void watermark. The security aspects and payload aspects are evaluated statistically while the imperceptibility is measured using edit-hit counts based on human judgments. It is observed that agglutinative languages are somewhat more amenable to morphosyntax-based natural language watermarking and the free word order property of a language, like Turkish, is an extra bonus.
Ants vs. faults: A swarm intelligence approach for diagnosing distributed computing networks
Authors: Mourad Elhadef, Amiya Nayak, Ni Zeng
Venue: Proceedings of the 13th International Conference on Parallel and Distributed Systems - Volume 01 (2007)

Although much is known about the nature of testing structures for t-diagnosable systems, the problem of efficiently identifying the set of faulty units of a system in which the fault situation is known to be diagnosable remains an outstanding research issue. In this paper, we propose and evaluate an approach, based on swarm intelligence, to identify the set of faulty units in diagnosable systems. We consider t-diagnosable systems under the PMC model, where each node is capable of testing a particular subset of the other nodes in the system. We show that the ant-colony-based fault diagnosis algorithm is efficient, in that, it is able to diagnose a faulty situation in very short periods of time even if the number of faults is around the bound t, and with very few number of ants. The simulation results show that the new adaptive fault identification approach constitutes an addition to existing diagnosis algorithms.
An exploration of experts' subjective patterns in behavioral based job qualification using Choquet integral
Authors: P. Makvandi, S. H. Alavi, A. Hajiha
Venue: Proceedings of the 6th WSEAS International Conference on Systems Theory & Scientific Computation (2006)

In this paper, the experts' views about the merit of individuals in a specified job based on behavioral features are gathered and used as training data for a Choquet approximator. By adjusting fuzzy measures, the approximator gains the ability to emulate the role of expert in assigning a merit score to a set of behavioral features. Shapley and interaction indices computed based on fuzzy measures and can partially discover the experts' subjective patterns in job qualification process.
An affine symmetric approach to natural image compression
Authors: Heechan Park, Abhir Bhalerao, Graham Martin, Andy C. Yu
Venue: Proceedings of the 2nd international conference on Mobile multimedia communications (2006)

We approach image compression using an affine symmetric image representation that exploits rotation and scaling as well as the translational redundancy present between image blocks. It resembles fractal theory in the sense that a single prototypical block is needed to represent other similar blocks. Finding the optimal prototypes is not a trivial task particularly for a natural image. We propose an efficient technique utilizing independent component analysis that results in near-optimal prototypical blocks. A reliable affine model estimation method based on Gaussian mixture models and modified expectation maximization is presented. For completeness, a parameter entropy coding strategy is suggested that achieves as low as 0.14 bpp. This study provides an interesting approach to image compression although the reconstruction quality is slightly below that of some other methods. However the high frequency details are well-preserved at low bitrates, making the technique potentially useful in low bandwidth mobile applications.
Brief paper: Closed-loop identification of multivariable systems: With or without excitation of all references?
Authors: L. Mišković, A. Karimi, D. Bonvin, M. Gevers
Venue: Automatica (Journal of IFAC) (2008)

The accuracy of plant parameters estimated in closed-loop operation is investigated for a class of multivariable systems and for the situation where only some of the reference inputs are excited. This issue is important for at least two reasons: (i) there are control applications where it is preferable not to excite all references in order to avoid performance degradation, and (ii) it is not clear whether the results in the context of open-loop identification, where the existence of common parameters between the various transfer functions is a condition for improved accuracy with additional excitation, also hold in the closed-loop case. The paper examines the effect of the non-excitation of some reference inputs on the variance of the estimated parameters. The proposed expressions are valid for all conventional model structures used in prediction error identification. Although exciting all reference inputs is not necessary for identifiability, this work shows that, regardless of the parametrization, the excitation of all references never worsens and, in most cases, improves the accuracy of the parameter estimates. The analytical results developed in this work are illustrated by two simulation examples.
AI's 10 to Watch
Authors: James Hendler, Philipp Cimiano, Dmitri Dolgov, Anat Levin, Peter Mika, Brian Milch, Louis-Philippe Morency, Boris Motik, Jennifer Neville, Erik B. Sudderth, Luis von Ahn
Venue: IEEE Intelligent Systems (2008)

The recipients of the 2008 IEEE Intelligent Systems 10 to Watch award—Philipp Cimiano, Dmitri Dolgov, Anat Levin, Peter Mika, Brian Milch, Louis-Philippe Morency, Boris Motik, Jennifer Neville, Erik Sudderth, and Luis von Ahn—discuss their current research and their visions of AI for the future.
Implicit processing of emotional prosody in a foreign versus native language
Authors: Marc D. Pell, Vera Skorup
Venue: Speech Communication (2008)

To test ideas about the universality and time course of vocal emotion processing, 50 English listeners performed an emotional priming task to determine whether they implicitly recognize emotional meanings of prosody when exposed to a foreign language. Arabic pseudo-utterances produced in a happy, sad, or neutral prosody acted as primes for a happy, sad, or 'false' (i.e., non-emotional) face target and participants judged whether the facial expression represents an emotion. The prosody-face relationship (congruent, incongruent) and the prosody duration (600 or 1000ms) were independently manipulated in the same experiment. Results indicated that English listeners automatically detect the emotional significance of prosody when expressed in a foreign language, although activation of emotional meanings in a foreign language may require increased exposure to prosodic information than when listening to the native language.
Simulated Annealing In The Optimization Of Collaborative Systems Operation
Authors: Tad Gonsalves, Kiyoshi Itoh
Venue: Journal of Integrated Design Process Science (2006)

The simulated annealing (SA) algorithm has been applied for the optimization of a variety of systems. In this paper, we discuss the application of SA for optimizing the operation of collaborative systems. We choose the weighted average of the time customers spend in the system as the objective function to be minimized. This is because the time spent in the system is directly related to customer satisfaction, which in turn is related to business profits. Optimization through SA is sought for the system operating with the service time as well as the capacity of each of its servers, under constrains. We have tested the algorithm on a small-scale clinic model and found the results satisfactory. As future work, we plan to fine-tune the algorithm and apply it to larger collaborative systems.
Morphology evolution in TiN/Al-0.5Cu/Ti interconnection during chamber long stay and post-deposition annealing correlated to defect formation in metallization processing
Authors: Ming-Yen Li, Mei-Yun Su, Te-Fu Chang, Bin-Siang Tsai, Wen-Li Tsai, Hsiao-Che Wu, Poyo Chuang, Tsung-Hsun Yang, Haw Yen
Venue: Microelectronic Engineering (2008)

TiN/Al-0.5Cu/Ti film stacks deposited on SiO"2 substrate were studied by X-ray diffraction and electron microscopy to clarify the effects of the chamber long stay and post-deposition annealing on the morphology evolution. Experimental results indicated that the chamber idleness at 270^oC resulted in significant Al"2Cu precipitation and hillock growth for the Al-Cu films, which enhanced the occurrence rate of the microcorrosion-induced bridging defects and caused yield degradation on production line while post-deposition annealing at 400^oC for 30min was proven to effectively regain good yield for the chamber-idled wafers. The yield recovery could be attributed to the fast Al"2Cu dissolution and hillock mitigation at the annealing temperature. The electrical sheet resistance of the Al-Cu films would somewhat increase due to the formation of the Al"3Ti phase during annealing, but the Al"2Cu precipitates and surface hillocks formed during chamber idleness would scarcely change the electrical property of the films. This study suggests that the evolutions of second phase and surface hillocks can be controlled by the processing duration and post-deposition treatment rather than the deposition temperature or Cu addition amount of Al-Cu alloy.
Randomized and deterministic algorithms for geometric spanners of small diameter
Authors: S. Arya
Venue: Proceedings of the 35th Annual Symposium on Foundations of Computer Science (1994)

Let S be a set of n points in IR/sup d/ and let t>1 be a real number. A t-spanner for S is a directed graph having the points of S as its vertices, such that for any pair p and q of points there is a path from p to q of length at most t times the Euclidean distance between p and p. Such a path is called a t-spanner path. The spanner diameter of such a spanner is defined as the smallest integer D such that for any pair p and q of points there is a t-spanner path from p to q containing at most D edges. Randomized and deterministic algorithms are given for constructing t-spanners consisting of O(n) edges and having O(log n) diameter. Also, it is shown how to maintain the randomized t-spanner under random insertions and deletions. Previously, no results were known for spanners with low spanner diameter and for maintaining spanners under insertions and deletions.
Computation of the weight distribution of CRC codes
Authors: Felice Manganiello
Venue: Applicable Algebra in Engineering, Communication and Computing (2008)

In this article, we illustrate an algorithm for the computation of the weight distribution of CRC codes. The recursive structure of CRC codes will give us an iterative way to compute the weight distribution of their dual codes starting from some &#x201c;representative&#x201d; words. Thanks to MacWilliams&#x2019; Theorem, the computation of the weight distribution of the dual codes can be easily brought back to that of CRC codes.
Reconstructing Control Flow in Modulo Scheduled Loops
Authors: Miao Wang, Rongcai Zhao, Jianmin Pang, Guoming Cai
Venue: Proceedings of the Seventh IEEE/ACIS International Conference on Computer and Information Science (icis 2008) (2008)

Software pipelining is a loop optimization technique used to exploit instruction level parallelism in the loop. EPICarchitectures, such as Intel IA-64 (Itanium) provide extensive hardware support for software pipelining to generate compact and highly parallel code. However it transforms explicit conditional branches into implicit control flow based on the information of the guard registers. It is difficult to reconstruct precisecontrol flow from the optimized code. This paper describes an approach to reconstruct implicit control flow in modulo scheduled loops and thereby improve the quality of reverse engineering optimized executables. We also demonstrate the effectiveness of this approach through experiment results.
A Question Answering System for the Operation of Software Applications
Authors: Atsushi Fujii, Seiji Takegata
Venue: Proceedings of the 22nd International Conference on Advanced Information Networking and Applications - Workshops (2008)

Reflecting the rapid growth of information technology, the configuration of software applications, such as word processors and spreadsheets, is both sophisticated and complicated. It is often difficult for users to identify the relevant functions in an online manual of a target application. In this paper, we propose a question answering system that finds functions related to a user's request. To enhance our system, we addressed two "mismatch'' problems. The first problem is associated with mismatch in vocabulary, in which the same concept is represented by different words in the manual and in the user's question. The second problem is associated with mismatch in function. Although a user may have a hypothetical function for their purpose in mind, the purpose can sometimes be accomplished by other functions. To resolve these mismatch problems, we use the World Wide Web to extract related terms for software functions, so that a user's question can be matched to the relevant function with a high accuracy. We show the effectiveness of our system experimentally.
The GIS Weasel: An interface for the development of geographic information used in environmental simulation modeling
Authors: Roland J. Viger
Venue: Computers Geosciences (2008)

The GIS Weasel is a freely available, open-source software package built on top of ArcInfo Workstation^(R) [ESRI, Inc., 2001, ArcInfo Workstation (8.1 ed.), Redlands, CA] for creating maps and parameters of geographic features used in environmental simulation models. The software has been designed to minimize the need for GIS expertise and automate the preparation of the geographic information as much as possible. Although many kinds of data can be exploited with the GIS Weasel, the only information required is a raster dataset of elevation for the user's area of interest (AOI). The user-defined AOI serves as a starting point from which to create maps of many different types of geographic features, including sub-watersheds, streams, elevation bands, land cover patches, land parcels, or anything else that can be discerned from the available data. The GIS Weasel has a library of over 200 routines that can be applied to any raster map of geographic features to generate information about shape, area, or topological association with other features of the same or different maps. In addition, a wide variety of parameters can be derived using ancillary data layers such as soil and vegetation maps.
A Lossless Wavelet-Based Predictive Multispectral Image Compressor
Authors: Daniel Acevedo, Ana Ruedin
Venue: Proceedings of the Data Compression Conference (2008)

We present a nonlinear lossless compressor for multispectral images that exploits both intraband and interband correlations. A 2-dimensional wavelet transform is performed on each image band, and then the interband and remaining intraband correlations are exploited via an affine prediction of the wavelet coefficients, conditioning it to class information.
Evolving an integrated curriculum for object-oriented analysis and design
Authors: Sarnath Ramnath, Brahma Dathan
Venue: ACM SIGCSE Bulletin (2008)

Object-Oriented Analysis and Design has established itself as an integral and critically vital part of the software development process. In this paper, we describe an integrated approach to teaching this subject so that it covers vital components of this vast field: analysis, object-oriented design principles such as the Liskov Substitution Principle, the design process, which shows how and where the rules are applied, modeling, design and architectural patterns, language features, and refactoring. The course has evolved over the past 10 years to one that revolves around three major case studies. This evolution has resulted in a course that covers all important aspects of OOAD in a manner that emphasizes their inter-relatedness and hence their relevance to overall design process. Feedback suggests that this approach has improved students' understanding of the OOAD concepts.
Knowledge-Based Baseline Detection and Optimal Thresholding for Words Segmentation in Efficient Pre-Processing of Handwritten Arabic Text
Authors: Jawad H. AlKhateeb, Jinchang Ren, Stan S. Ipson, Jianmin Jiang
Venue: Proceedings of the Fifth International Conference on Information Technology: New Generations (2008)

Techniques on detecting baseline and segmenting words in handwritten Arabic text are presented in this paper. Instead of using pure projection, knowledge of the location of the baseline is utilized for accurate baseline detection. Then, distances between words and subwords are respectively analyzed, and their statistical distributions are obtained to decide an optimal threshold in segmenting words. Results on IFN/ENIT database have validated our methods in terms of improved baseline detection and words segmentation for further recognition
A novel routing scheme for paired peers in P2P network
Authors: Xiaofei Liao
Venue: Proceedings of the 2007 Asian technology information program's (ATIP's) 3rd workshop on High performance computing in China: solution approaches to impediments for high performance computing (2007)

Peer-to-Peer (P2P) networks have been shown to be a promising approach to provide instant voice services over the Internet for its potential high scalability. However, for one paired peers, how to efficiently transmit voice data among peers in such networks remains a major challenge. Hereby this paper proposed some hybrid routing schemes for P2P transmitting system, which include improved random detection algorithm, delay binary tree search algorithm, AS-aware discovery algorithm. With the help of these novel routing schemes, we can choose the correct algorithm to transfer media data, in small size but low delay, among peers in P2P network. Simulations show that these new routing strategies achieve obvious effect.
Constructive memory and situated design computing
Authors: Musstanser Tinauli, Margherita Pillan
Venue: Proceedings of the 4th international conference on mobile technology, applications, and systems and the 1st international symposium on Computer human interaction in mobile technology (2007)

The paper presents the basic concepts, which leads us towards an understanding of what is a situation. We also discuss how we use constructive memory as the foundation stone of a situation.
Cleve Moler: Mathematical Software Pioneer and Creator of Matlab
Authors: Thomas Haigh
Venue: IEEE Annals of the History of Computing (2008)

A prominent figure in the numerical analysis community in his early academic career, Cleve Moler gradually shifted his research efforts to mathematical software, specifically to the development of Matlab, an educational software package. Matlab has evolved to become a commercial success in scientific and engineering applications. Moler—now Mathworks' chief scientist and chairman—is still involved in software development and applied computing research and education.