ppxscal/embedding_network huggingface dataset:
Non supervised neural net applied to the detection of voice impairment
Authors: J. I. Godino-Llorente
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 06 (2000)

Most vocal and voice diseases cause changes in the voice. ENT clinicians use acoustic voice analysis to characterise pathological voices. The authors have focused their task in detection of impaired voices by means of neural network technology (ANN) and acoustic analysis. Former and actual works demonstrates that impaired voice detection can be carried out by means of supervised neural nets: MLP (multilayer perceptron). This paper is focussed in the task of detection of pathological voices by means of non-supervised neural nets (Kohonen self organising maps), comparing results with those obtained using supervised neural nets (MLPs). The aim of this paper is to study and compare two neural net based methods to be used for the detection of impaired voices: supervised (MLP ANNs) and non-supervised neural nets (Kohonen ANNs). Voice registers are parameterised by means of acoustic parameters.
Plumbing and other utilities
Authors: Rob Pike
Venue: Proceedings of the annual conference on USENIX Annual Technical Conference (2000)

Plumbing is a new mechanism for interprocess communication in Plan 9, specifically the passing of messages between interactive programs as part of the user interface. Although plumbing shares some properties with familiar notions such as cut and paste, it offers a more general data exchange mechanism without imposing a particular user interface. The core of the plumbing system is a program called the plumber, which handles all messages and dispatches and reformats them according to configuration rules written in a special-purpose language. This approach allows the contents and context of a piece of data to define how it is handled. Unlike with drag and drop or cut and paste, the user doesn't need to deliver the data; the contents of a plumbing message, as interpreted by the plumbing rules, determine its destination. The plumber has an unusual architecture: it is a language-driven file server. This design has distinct advantages. It makes plumbing easy to add to an existing, Unix-like command environment; it guarantees uniform handling of inter-application messages; it offloads from those applications most of the work of extracting and dispatching messages; and it works transparently across a network.
Ultra-Wideband and Uni-Directional Radiation Slot Antenna for Multi-Band Wireless Communication Applications
Authors: Qinjiang Rao, Tayeb A. Denidni
Venue: Wireless Personal Communications: An International Journal (2007)

In this paper, a ultra-wideband slot antenna is proposed and developed for multi-band wireless communication applications. The radiating slot is fed by a microstrip line with a microstrip fork shaped tuning stub and backed by a finite metallic reflector. The frequency characteristic and radiation performance of the proposed antenna are successfully optimized and the related prototypes are fabricated and tested. The measured results show that the impedance bandwidth can cover the band from 1.85 to 6.1 GHz with return loss of better than 10 dB. The obtained patterns display a high gain and uni-directional radiation patterns within interested bands. With these features, the proposed structure is suitable for application in wireless communication systems, where a single antenna is needed to operate at multi-bands simultaneously, such as PCS (1.85---1.99 GHz), UMTS (1.92---2.17 GHz) and all WLAN bands (2.4---2.48 GHz, and IEEE802.11a WLAN applications: 5.15---5.35 and 5.725---5.825 GHz).
A junior course in engineering design and society
Authors: L. S. Nagurney
Venue: Proceedings of the 30th Annual Frontiers in Education - Volume 02 (2000)

As part of an NSF grant, the College of Engineering at the University of Hartford is developing an interdisciplinary course in engineering practice. The purpose of the course is to introduce engineering students to the factors such as impact on society, political concerns, cultural concerns, that significantly affect their engineering design process, but are traditionally not part of a quantitative engineering design. A major focus of the course is communication. To be successful, an engineer must be able to communicate his/her results to a variety of interested individuals, stakeholders and bodies, both technical and non-technical. The paper discusses the course.
The gopher game: a social, mobile, locative game with user generated content and peer review
Authors: Sean Casey, Ben Kirman, Duncan Rowland
Venue: Proceedings of the international conference on Advances in computer entertainment technology (2007)

This paper introduces 'Gophers', a social game for mobile devices that utilises task oriented gameplay to create a novel entertainment experience. The study combines a number of key research themes: mobile social gaming, acquiring useful data through gameplay and content sharing in mobile settings. The experience of trialling the game in the real world is discussed and the findings from the study are presented.
Trojan Detection using IC Fingerprinting
Authors: Dakshi Agrawal, Selcuk Baktir, Deniz Karakoyunlu, Pankaj Rohatgi, Berk Sunar
Venue: Proceedings of the 2007 IEEE Symposium on Security and Privacy (2007)

Hardware manufacturers are increasingly outsourcing their IC fabrication work overseas due to their much lower cost structure. This poses a significant security risk for ICs used for critical military and business applications. Attackers can exploit this loss of control to substitute Trojan ICs for genuine ones or insert a Trojan circuit into the design or mask used for fabrication. We show that a technique borrowed from side-channel cryptanalysis can be used to mitigate this problem. Our approach uses noise modeling to construct a set of fingerprints for an IC family utilizing sidechannel information such as power, temperature, and electromagnetic (EM) profiles. The set of fingerprints can be developed using a few ICs from a batch and only these ICs would have to be invasively tested to ensure that they were all authentic. The remaining ICs are verified using statistical tests against the fingerprints. We describe the theoretical framework and present preliminary experimental results to show that this approach is viable by presenting results obtained by using power simulations performed on representative circuits with several different Trojan circuitry. These results show that Trojans that are 3-4 orders of magnitude smaller than the main circuit can be detected by signal processing techniques. While scaling our technique to detect even smaller Trojans in complex ICs with tens or hundreds of millions of transistors would require certain modifications to the IC design process, our results provide a starting point to address this important problem.
Stratification in P2P Networks: Application to BitTorrent
Authors: Anh-Tuan Gai, Fabien Mathieu, Fabien de Montgolfier, Julien Reynier
Venue: Proceedings of the 27th International Conference on Distributed Computing Systems (2007)

We consider a model for decentralized collaborative networks that is based on stable matching theory. This model is applied to systems with a global ranking utility function, which admits a unique stable configuration. We study the speed of convergence and analyze the stratification properties of the stable configuration, both when all collaborations are possible and for random possible collaborations. As a practical example, we consider the BitTorrent Titfor- Tat policy. For this system, our model provides an interesting insight into peer download rates and a good understanding of upload settings strategy.
VGrids as an Implementation of Virtual Organizations in Grid Computing
Authors: Henrik Hoey Karlsen, Brian Vinter
Venue: Proceedings of the 15th IEEE International Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises (2006)

Facilitating the organization and work of Virtual Organizations is amongst the premiere advantages of Grid computing. MiG is a new middleware with a fundamental change in the basic design compared to traditional middleware. The design makes it simple to obtain and implement all of the classic Grid features and furthermore it introduces completely new possibilities to facilitate Virtual Organizations in the middleware.
Accurate evaluation of divided differences for polynomial interpolation of exponential propagators
Authors: M. Caliari
Venue: Computing (2007)

In this paper, we propose an approach to the computation of more accurate divided differences for the interpolation in the Newton form of the matrix exponential propagator &#x03c6;(hA)v, &#x03c6; (z)&#x00a0;=&#x00a0;(ez&#x00a0;&#x2212;&#x00a0;1)/z. In this way, it is possible to approximate &#x03c6; (hA)v with larger time step size h than with traditionally computed divided differences, as confirmed by numerical examples. The technique can be also extended to &#x201c;higher&#x201d; order &#x03c6;k functions, k&#x2265;0.
Curriculum improvements in power engineering
Authors: E. O'Neill-Carrillo
Venue: Proceedings of the Frontiers in Education Conference, 2001. on 31st Annual - Volume 01 (2001)

The Power Engineering Group at the University of Puerto Rico-Mayaguez (UPRM) has implemented several strategies to improve its curriculum and meet new ABET accreditation criteria. Strategies include the revision of course contents, integration of laboratory practices to courses, and a more prominent role of undergraduate research and power electronics in the power engineering curriculum. Courses are being updated to include contemporary topics while keeping fundamental engineering principles. A recent grant by NSF will support on-going efforts to create laboratory practices that would connect the teaching of theoretical principles to actual implementations. Participation in the Center for Power Electronics Systems, a NSF Engineering Research Center, has given UPRM the opportunity to expand course offerings and undergraduate research in power engineering. An important outcome of this curriculum improvement is to motivate students to take an active role in the learning process.
Introducing new verification methods into a company's design flow: an industrial user's point of view
Authors: Robert Lissel, Joachim Gerlach, Robert Bosch GmbH
Venue: Proceedings of the conference on Design, automation and test in Europe (2007)

Today the task of design verification has become one of the key bottlenecks in hardware and system design. To address this topic, several verification languages, methods and tools, which address several issues of the verification process, were developed by multiple EDA vendors over the last years. This paper takes an industrial user's point of view and explores the difficulties introducing new verification methods into a company's "naturally grown" and well established design flow --- taking into account application domain specific requirements, constraints given by the existing design environment and economical aspects. The presented approach extends the capabilities of an existing verification strategy by powerful new features while keeping in mind integration, reuse and applicability aspects. Based on an industrial design example the effectiveness and potential of the developed approach is shown.
Fine-Grained and Scalable Approaches for Message Integrity
Authors: Joon S. Park, Ganesh Devarajan
Venue: Proceedings of the 40th Annual Hawaii International Conference on System Sciences (2007)

When we have multiple users compiling a single message, including shared contents, metadata, policy, and so on, the integrity of the contents created by individual users needs to be maintained in an effective manner. There is an urgent need for new mechanisms in a trusted content-sharing environment to support multiple signers for the same message, which can be dynamically updated with autonomous protection and maintenance mechanisms. In our previous work we identified and compared three different binding mechanisms including monolithic, autonomous, and chained binding mechanisms, using digital signatures. The original work was designed and implemented for digital certificates. In this paper we apply those schemes with extension to the organization-to-organization messaging services that require effective integrity verification and tracking mechanisms at the user-level in the receiving organization in a scalable manner with fine granularity. We implement our ideas in the Java Remote Method Invocation (RMI) platform and discuss the trade-offs of the signature schemes based on our experimental results.
A coevolutionary approach to adapt the genotype-phenotype map in genetic algorithms
Authors: H. Murao, H. Tamaki, S. Kitamura
Venue: Proceedings of the Evolutionary Computation on 2002. CEC '02. Proceedings of the 2002 Congress - Volume 02 (2002)

This paper introduces a coevolutionary approach to genetic algorithms (GAs) for exploring not only within a part of the solution space defined by the genotype-phenotype map but also the map itself. In canonical GAs with the fixed map, how a large area of the solution space can be covered by possible genomes and consequently how better solutions can be found by a GA rely on how well the genotype-phenotype map is designed, but it is difficult for designers of the algorithms to design the map without a-priori knowledge of the solution space. In the proposed algorithm, the genotype-phenotype map is improved adaptively during the searching process for solution candidates. It is applied to 3-bit deceptive problems as a kind of typical combinatorial optimization problem, which are well-known in that the difficulty against GAs can be controlled by the genotype-phenotype map, and shows fairly good performance beside a conventional GA.
A framework for describing and comparing courses and curricula
Authors: Michela Pedroni, Manuel Oriol, Bertrand Meyer
Venue: ACM SIGCSE Bulletin (2007)

Curriculum and course planning is a key step in developing quality educational programs, but current practices very often lack a systematic approach. This article addresses this issue by refining and expanding the concept of Testable, Reusable Unit of Cognition (Truc). The methodology allows modeling courses and verifying compliance of a given course to a given description. It also makes it possible to describe precisely what students have previously learned and, as a result, adapt the teaching to their specific needs. The article presents a case study of comparing a subset of two introductory programming textbooks and describes the application TrucStudio that supports the methodology.
Targeted Projection Pursuit for Interactive Exploration of High- Dimensional Data Sets
Authors: Joe Faith
Venue: Proceedings of the 11th International Conference Information Visualization (2007)

High-dimensional data is, by its nature, difficult to visualise. Many current techniques involve reducing the dimensionality of the data, which results in a loss of information. Targeted Projection Pursuit is a novel method for visualising high-dimensional datasets which allows the user to interactively explore the space of possible views to find those that meet their requirements. A prototype tool that utilises this method is introduced, and is shown to allow users to explore data through an interface that is transparent and efficient. The tool and underlying technique are general purposeapplicable to any high-dimensional numeric data, and supporting a wide range of exploratory data analysis activities - but are evaluated on three particular tasks using gene expression data: identifiying discriminatory genes, visualising diagnostic classes, and detecting misdiagnosed samples. It is found to perform well in comparison with standard techniques.
Joint consideration of fault-tolerance, energy-efficiency and performance in on-chip networks
Authors: Alireza Ejlali, Bashir M. Al-Hashimi, Paul Rosinger, Seyed Ghassem Miremadi
Venue: Proceedings of the conference on Design, automation and test in Europe (2007)

High reliability against noise, low energy consumption and high performance are key objectives in the design of on-chip networks. Recently some researchers have considered the various trade-offs between two of these objectives. However, as we will argue later, the three design objectives should be considered jointly and simultaneously. The first aim of this paper is to analyze the impact of various error-control schemes on the simultaneous trade-off between reliability, performance and energy when voltage swing varies. We provide a detailed comparative analysis of the error-control schemes using analytical models and SPICE simulations. The second aim of this paper is to analyze the impact of noise power and time constraint on the effectiveness of error-control schemes, which have not been addressed in previous studies.
EC practitioners: results of the first survey
Authors: Gregory S. Hornby, Tina Yu
Venue: ACM SIGEVOlution (2007)

The field of Evolutionary Computation (EC) has been around for several decades [2, 3], and in recent years there has been an explosion not only in the different types of biologically inspired algorithms, but also in the number of practitioners in the field. A critical part of this growth and development of the EC field has been the technology transfer of EC from academia to industry and the successful application of EC techniques to real-world problems. To assist in the continued technology transfer of EC techniques from academia to industry we conducted a survey of EC practitioners working in both academia and industry and in this article we summarize some of our findings.
Planning Software Project Success with Semi-Quantitative Reasoning
Authors: He Zhang, Barbara Kitchenham, Ross Jeffery
Venue: Proceedings of the 2007 Australian Software Engineering Conference (2007)

Software process modeling and simulation hold out the promise of improving project planning and control. However, purely quantitative approaches require a very detailed understanding of the software project and process, including reliable and precise project data. Contemporary project management defines the success of project as a box or hyper-cube, rather than the traditional single point, which allows the planning for software project success semi-quantitatively with uncertainty-tolerance. This paper introduces semi-quantitative reasoning into software project planning and develops a practical approach to enhance the confidence of project success under the uncertainty and contingency. We illustrate its value and flexibility by a simplified software process model focusing on staffing issues.
DULO: an effective buffer cache management scheme to exploit both temporal and spatial locality
Authors: Song Jiang, Xiaoning Ding, Feng Chen, Enhua Tan, Xiaodong Zhang
Venue: Proceedings of the 4th conference on USENIX Conference on File and Storage Technologies - Volume 4 (2005)

Sequentiality of requested blocks on disks, or their spatial locality, is critical to the performance of disks, where the throughput of accesses to sequentially placed disk blocks can be an order of magnitude higher than that of accesses to randomly placed blocks. Unfortunately, spatial locality of cached blocks is largely ignored and only temporal locality is considered in system buffer cache management. Thus, disk performance for workloads without dominant sequential accesses can be seriously degraded. To address this problem, we propose a scheme called DULO (DUal LOcality), which exploits both temporal and spatial locality in buffer cache management. Leveraging the filtering effect of the buffer cache, DULO can influence the I/O request stream by making the requests passed to disk more sequential, significantly increasing the effectiveness of I/O scheduling and prefetching for disk performance improvements. DULO has been extensively evaluated by both trace-driven simulations and a prototype implementation in Linux 2.6.11. In the simulations and system measurements, various application workloads have been tested, including Web Server, TPC benchmarks, and scientific programs. Our experiments show that DULO can significantly increase system throughput and reduce program execution times.
Workshops vs. tutoring: how ASU's minority engineering program is changing the way engineering students learn
Authors: J. K. Adair
Venue: Proceedings of the Frontiers in Education Conference, 2001. 31st Annual - Volume 02 (2001)

For the past five years, the Minority Engineering Program in the College of Engineering and Applied Sciences at Arizona State University (ASU) has channeled retention efforts through their Academic Excellence Program. This program housed two components: peer tutoring and mentoring and group workshops. While both produced successful retention rates among minority students within the College, both students and faculty strongly expressed a need for a more structured anti intensive program to assist engineering students with the more challenging courses. In fall of 2000, ASU's MEP remodeled their efforts at retention and created the Academic Excellence Workshop program. The workshop program replaces tutoring and mentoring programs with weekly workshop sessions. This nontraditional approach to academic support has necessitated a change in paradigm for staff faculty, and students. The response to this change has been promising. This paper discusses the AEW program structure and how the workshop concept has been promoted to students and faculty.
MarCol: A Market-Based Recommender System
Authors: Dan Melamed, Bracha Shapira, Yuval Elovici
Venue: IEEE Intelligent Systems (2007)

Collaborative information-filtering systems recommend relevant items to users on the basis of their common interests. The users express their interests by leaving relevance feedback on items. The system's ability to learn user preferences and predict accurate recommendations depends on the number of judgments the user provides. However, users tend to "free-ride," consuming other users' judgments without providing their own. To solve this problem, systems should offer users incentives for providing judgments. A new market-based model for pricing judgments aims to motivate users by requiring them to provide judgments before they can receive recommendations. Researchers used MarCol, a market-based collaborative IF system, to conduct experiments examining the model's effect on user feedback provision, user satisfaction, and recommendation quality. Results show that the model increases feedback and improves recommendation quality. This article is part of a special issue on Recommender Systems.
Reduced cover-trees and their application in the sabre access path model
Authors: Kjell Karlsson
Venue: Proceedings of the seventh international conference on Very Large Data Bases - Volume 7 (1981)

In this paper we define a tree-structure, the reduced cover-tree (RCT), for implementing both classical indexes and multiattribute search structures and we outline its application in the data access model of the relational multi-processor data base machine SABRE. The kernel of this data access model is an RCT describing the placement of a relation that could be either a multi-attribute clustering scheme also used to - in some extent - substitute secondary indexes, or a non-dense unique key index. If the placement is achieved by multi-attribute clustering a unique key index can be nicely constructed with the same tree-structure. The RCT is represented by a bit-table in a most economic way and thus the number of accesses to memory when retrieval can be considerably cut down. On the average the memory occupation rate should turn about 75 per cent.