ppxscal/embedding_network huggingface dataset:
Joint beamforming and channel estimation for pilot-aided WCDMA systems
Authors: X. Mestre
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 05 (2000)

The problem of joint beamforming and channel estimation for multi-rate multi-code systems is addressed. Usual schemes perform this filtering/estimation operation making use of a training sequence time-multiplexed with the transmitted data. However if pilot and traffic signals are transmitted simultaneously using distinct code allocation-as it is the case in recent standards such as cdma2000 or WCDMA-these schemes tend to fail. This paper proposes semi-blind techniques to overcome the uplink auto-interfering effects of such systems. It is shown that the semi-blind approach yields substantially better performance results thanks to the implicit modeling of the unknown traffic data.
Tutorial IND2B: Structured Embedded Configuration and Test
Authors: C. J. Clark
Venue: Proceedings of the 20th International Conference on VLSI Design held jointly with 6th International Conference: Embedded Systems (2007)

Embedded infrastructure IP to optimize chip-level manufacturing test and debugging has become common practice. However, adopting the same approach for boards and systems requires a different family of infrastructure IP. This tutorial introduces a structured, standards-based approach to PCB self-test and FPGA configuration and presents how it can optimize manufacturing test and debugging, leverage ASIC level DFT, and support configurability, especially in today's reconfigurable products. Today's complex IC relies on scan and BIST for the majority of the test coverage achieved. Software driven functional self-test for PCBs and Systems now requires a solid foundation of scan-based self-test due to the complexity and skill required to achieve high fault coverage and useful diagnostics. Off-the-shelf infrastructure IP based on IEEE standards will enable system designers to build in the field re-configurable and high quality self-testable products with a minimum of engineering time and effort. Furthermore, the convergence of the FPGA configuration standard and scan-based test presents the designers new opportunities to increase fault coverage, lower their manufacturing test costs, field support costs, and extend their products' useful life with in-the-field updates. Infrastructure IP for the board and system level will save engineering time and will reduce design risk since they are pre-engineered and leverage IEEE standards. The standards-based solutions are re-usable, from one phase of a single product life cycle to the next, and from one product design to the next.
PBS: a unified priority-based scheduler
Authors: Hanhua Feng, Vishal Misra, Dan Rubenstein
Venue: Proceedings of the 2007 ACM SIGMETRICS international conference on Measurement and modeling of computer systems (2007)

Blind scheduling policies schedule tasks without knowledge of the tasks' remaining processing times. Existing blind policies, such as FCFS, PS, and LAS, have proven useful in network and operating system applications, but each policy has a separate, vastly differing description, leading to separate and distinct implementations. This paper presents the design and implementation of a configurable blind scheduler that contains a continuous, tunable parameter. By merely changing the value of this parameter, the scheduler's policy exactly emulates or closely approximates several existing standard policies. Other settings enable policies whose behavior is a hybrid of these standards. We demonstrate the practical benefits of such a configurable scheduler by implementing it into the Linux operating system. We show that we can emulate the behavior of Linux's existing, more complex scheduler with a single (hybrid) setting of the parameter. We also show, using synthetic workloads, that the best value for the tunable parameter is not unique, but depends on distribution of the size of tasks arriving to the system. Finally, we use our formulation of the configurable scheduler to contrast the behavior of various blind schedulers by exploring how various properties of the scheduler change as we vary our scheduler's tunable parameter.
Infrastructure and tools for a computer network and data communication laboratory for a computer engineering undergraduate course
Authors: G. Bressan
Venue: Proceedings of the Frontiers in Education Conference, 2001. 31st Annual - Volume 02 (2001)

This project aims at the design of a classroom environment and the development of laboratory experiments for a discipline on Computer Network Laboratory for an undergraduate course on Computer Engineering at Escola Politecnica da Universidade de Sao Paulo, Brazil. Special consideration was taken concerning the cabling and the planning of the physical and logical configuration of the classroom network, due to the need to run experiments using network equipment like routers and ATM switches. An important part of the laboratories is to reinforce the concepts acquired in the theoretical lectures and, for this reason, the experiments were planned for every network layer. Most of the experiments use software tools specifically developed for the experiments, like runtime libraries and simulators. Besides, the course material profits from tools developed for web distance learning training, including multimedia, on-line evaluation tests, chats and simulators. The laboratory has been running for three years and a new revision of the classrooms and of the experiments is being implemented.
Automatic clustering and generation of contextual questions for tied states in hidden Markov models
Authors: R. Singh
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 01 (1999)

Most current automatic speech recognition systems based on HMMs cluster or tie together subsets of the subword units with which speech is represented. This tying improves the recognition accuracy when systems are trained with limited data, and is performed by classifying the sub-phonetic units using a series of binary tests based on speech production, called "linguistic questions". This paper describes a new method for automatically determining the best combinations of subword units to form these questions. The hybrid algorithm proposed clusters state distributions of context-independent phones to obtain questions for triphonetic contexts. Experiments confirm that the questions thus generated can replace manually generated questions and can provide improved recognition accuracy. Automatic generation of questions has the additional important advantage of extensibility to languages for which the phonetic structure is not well understood by the system designer, and can be effectively used in situations where the subword units are not phonetically motivated.
What Have We Not Learned about Teaching Programming?
Authors: David Gries
Venue: Proceedings of the 30th Annual IEEE/NASA Software Engineering Workshop (2006)

Teaching our students how to think about the programming process would increase our effectiveness as teachers and make our curriculum more efficient.
A Dictionary Based Method For Determining Topics In Text And Transcribed Speech
Authors: Patrick Schone, Douglas Nelson
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 01 (1996)

An automatic technique which attempts to determine and cluster topical information in text and transcribed speech is described. The method uses an electronic dictionary which is recursively closed. The method identifies each word of a given excerpt of text by its root form in the dictionary and a salience is affixed. The salience from each individual word is then propagated to those terms which define it, which terms may themselves be propagated. Thus, each word in the excerpt spawns a directed graph of dictionary words and related weights. A combining function is then applied to the union of these graphs which enhances any mutual information. The N words with the largest combined scores are identified as either the topic or words pertaining to the topic. These top N words and their scores can then be used in cross-message correlations as a means to cluster topics.
The Telecom Industry and Context Awareness
Authors: Jordi Docter, Carlo Alberto Licciardi, Marco Marchetti
Venue: Proceedings of the International Conference on the Management of Mobile Business (2007)

The expenditure telecom operators made to prepare themselves for the 3G (and beyond) environment are far from being re-earned and recent research has showed that mobile customers are not willing to spend more money on mobile communication. The Telecom Industry needs to search for new sources of revenue. Opportunities can be found in the area of Context Awareness. As location based services are taking off, Telecom Operators need to understand quickly the possible roles they can play in context aware services before other players in the industry do. Based on a research on context aware services this paper proposes some new business roles interesting for telco's.
A case study of serial-flow car disassembly: Ergonomics, productivity and potential system performance: Research Articles
Authors: Karolina Kazmierczak, W. Patrick Neumann, Jørgen Winkel
Venue: Human Factors in Ergonomics Manufacturing (2007)

A recent European Union (EU) directive increases demands on car recycling. Thus, present craft-type disassembly systems need reconfiguration in order to be more efficient. A line-based system tested in the Netherlands was investigated regarding system performance and ergonomics. The system had reduced performance compared to the design specifications due to such factors as system losses, operator inexperience, and teamwork deficiencies. Operators' peak low back loads were lower than in Swedish craft-type systems. Direct, value-adding work comprised 30&percnt; of the workday, compared to about 70&percnt; in the Swedish manufacturing industry. Alternative system configurations were simulated and discussed using a novel combination of flow and human simulations. For example, a smaller variation in cycle time implied higher output in number of cars per week and larger operator cumulative loading on the low back. In all models the cumulative load was high compared to the loads previously recorded in assembly work. &copy; 2007 Wiley Periodicals, Inc. Hum Factors Man 17: 331&ndash;351, 2007.
'Perfect reconstruction' time-scaling filterbanks
Authors: T. F. Quatieri
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 02 (1999)

A filterbank-based method of time-scale modification is analyzed for elemental signals including clicks, sines, and AM-FM sines. It is shown that with the use of some basic properties of linear systems, as well as FM-to-AM filter transduction, "perfect reconstruction" time-scaling filterbanks can be constructed for these elemental signal classes under certain conditions on the filterbank. Conditions for perfect reconstruction time-scaling are shown analytically for the uniform filterbank case, while empirically for the nonuniform constant-Q (gammatone) case. Extension of perfect reconstruction to multi-components signals is shown to require both filterbank and signal-dependent conditions and indicates the need for a more complete theory of "perfect reconstruction" time-scaling filterbanks.
Distance Trisector of Segments and Zone Diagram of Segments in a Plane
Authors: Jinhee Chun, Yuji Okada, Takeshi Tokuyama
Venue: Proceedings of the 4th International Symposium on Voronoi Diagrams in Science and Engineering (2007)

Motivated by the work of Asano et al.[1], we consider the distance trisector problem and Zone diagram considering segments in the plane as the input geometric objects. As the most basic case, we first consider the pair of curves (distance trisector curves) trisecting the distance between a point and a line. This is a natural extension of the bisector curve (that is a parabola) of a point and a line. In this paper, we show that these trisector curves C_1 and C_2 exist and are unique. We then give a practical algorithm for computing the Zone diagram of a set of segments in a digital plane.
EDI and ERP: A Real-Time Framework for HealthCare Data Exchange
Authors: Joseph M. Woodside
Venue: Journal of Medical Systems (2007)

A framework is presented for Enterprise Resource Planning (ERP) and Electronic Data Interchange (EDI) in the healthcare industry. As the total cost of healthcare continues to rise and competitive pressures increase, the ability to reduce expenses while at the same time improving overall business characteristics, create an opportunity and necessity for technology usage. The framework addresses current barriers of EDI setup such as cost and flexibility along with ERP communication between entities. A prototype system is created to show feasibility of recent technology improvements and generate a proof of concept for the real-time framework.
A memory built-in self-diagnosis design with syndrome compression
Authors: Rei-Fu Huang, Chin-Lung Su, Cheng-Wen Wu
Venue: Proceedings of the 2004 IEEE International Workshop on Defect Based Testing (2004)

We present a memory built-in self-diagnosis (BISD) design that incorporates a fault syndrome compression scheme. We also have developed efficient faulty-word, faulty-row, and faulty-column identification methods, which have been incorporated in our new BISD design. Our approach reduces the amount of data that need to be transmitted from the chip under test to the automatic test equipment (ATE). It therefore reduces the ATE occupation time and the required ATE capture memory space. It also simplifies the analysis that has to be performed on the ATE. Simulation results for memories under various fault pattern distributions show that in most cases the data can be compressed to less than 6% of its original size.
A New Approach to the Computer Support of Strategic Decision Making in Enterprises by Means of a New Class of Understanding Based Management Support Systems
Authors: Ryszard Tadeusiewicz, Marek Ogiela, Lidia Ogiela
Venue: Proceedings of the 6th International Conference on Computer Information Systems and Industrial Management Applications (2007)

Automatic understanding is a new term, which would hardly appear in bibliographies three or four years ago but nowadays it is being used by increasing numbers of researchers and discussed in a growing number of papers. Most of these papers take into account the automatic understanding of information in the traditional text form - sometimes on the basis of ideas such as Semantic Networks and Ontologies. Automatic understanding is therefore being treated as a tool for better web searching and document summarization. In this work it will be proven that, in its design, the automatic understanding of business situations and opportunities can be very similar to the automatic understanding of medical images but definitely different in its algorithmic form - used for the automatic understanding of the merit content of text messages based on ontology.
Cognitive evaluation of uncertainty visualization methods for decision making
Authors: Maria Riveiro
Venue: Proceedings of the 4th symposium on Applied perception in graphics and visualization (2007)

Uncertainty constitutes a major obstacle to effective decision making. This work presents perceptual and cognitive principles from Tufte, Chambers and Bertin as well as results from user experiments for the theoretical evaluation of uncertainty visualization techniques that aid decision making. These principles can be used in future theoretical evaluations of existing or newly developed uncertainty visualization methods before usability testing with actual users.
U&I Aware: A Framework Using Data Mining and Collision Detection to Increase Awareness for Intersection Users
Authors: Flora Dilys Salim, Seng Wai Loke, Andry Rakotonirainy, Shonali Krishnaswamy
Venue: Proceedings of the 21st International Conference on Advanced Information Networking and Applications Workshops - Volume 02 (2007)

An intersection safety system should adapt to the particular characteristics that identify an intersection, by mining traffic and collision data. Given the large amount of sensor data that are obtained for intersections and from sensor-equipped cars, analysis and learning of such data is essential. This paper presents a new method to improve safety at intersections using a combination of a mathematical based collision detection algorithm and data mining. A number of scenarios at a simulated intersection are explored with encouraging results from our data mining implementation. The results suggest that our approach can help improve situation awareness and automate understanding of intersections, which, in turn, can be used to increase safety at intersections.
Advances in the SuperCalibrator Concept - Practical Implementations
Authors: A. P. Sakis Meliopoulos, George J. Cokkinides, Floyd Galvan, Bruce Fardanesh, Paul Myrda
Venue: Proceedings of the 40th Annual Hawaii International Conference on System Sciences (2007)

The SuperCalibrator concept was introduced to take advantage of the characteristics of GPSsynchronized equipment (PMUs). Specifically, GPS-synchronized equipment has the capacity to provide precise phase measurements (to 0.01 degrees accuracy) and relatively good quality magnitude measurements (up to 0.1% accuracy). However in a practical environment this precision is not achieved for a variety of reasons, such as errors from instrumentation, system unbalanced conditions, etc. The SuperCalibrator concept is based on a statistical estimation process that fits GPS-synchronized measurements and all other available standard data into a three-phase, breaker-oriented, instrumentation inclusive model. In this paper, this concept has been extended to provide a decentralized state estimator for power systems. The decentralized state estimator operates on substation data. The resulting substation state estimate is globally valid as long as there is a valid GPS-synchronized measurement at the substation. The paper describes the SuperCalibartor methodology. Presently the concept is implemented on five substations. Numerical experiments with these systems illustrate the superiority of this approach. The paper also describes preliminary implementation and performance issues. The implications of the overall approach are substantial.
Understanding User's Role in Computer-Based Information Systems--Lessons Learned from Dealing with Mislabelling in Blood Production Process
Authors: D. Qiu, G. Junghans, J. Misterek, G. Bein, K. Marquardt
Venue: Proceedings of the Twentieth IEEE International Symposium on Computer-Based Medical Systems (2007)

A computer-based information system is implicitly or explicitly subject to the labelling problem -- identifying the real-world object and establishing its cross-reference to its modelling entity stored in the database. Labelling errors in blood production process are very serious defects and pose great threats to blood safety, patient safety and the society. Yet, evidence shows that there are still blood donation centres using software with no measures at all or only insufficient ones against such errors. One of the possible causes why the software designer has failed to address this problem is the design barrier put up by computer's obvious limitation on its ability to access user's actions and circumstances. A better understanding of the user's role in a computer-based information system helps the software designer break through this barrier and encourages him to seek better solutions.
Development of an online campus map
Authors: Eric Omwega, Jonathan Tsu, Monica Ugwi, Christine Wang
Venue: ACM SIGCSE Bulletin (2007)

The online campus map allows users to easily find buildings and rooms on campus. The program displays the location based on user input and location data stored in a database. The project originated from a software design class. Starting with the course's prototype system, our goal was to refine this project to improve its efficiency, maintainability, and interface.
Globals of unary algebras
Authors: J&#x00e1;n Herchl, Danica Jakub&#x00ed;kov&#x00e1;-Studenovsk&#x00e1;
Venue: Soft Computing - A Fusion of Foundations, Methodologies and Applications (2007)

In the present paper, we investigate the question on the reconstructability (up to isomorphism) of a finite unary algebra from its global. It is proved that the class of all finite unary algebras is not globally determined.
A genetic algorithm based image segmentation for image analysis
Authors: M. Haseyama
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 06 (1999)

A new genetic algorithm (GA) based image segmentation method is proposed for image analysis. This method using a mean square error (MSE) based criterion can segment an image into some regions, while estimating a suitable region representation. The criterion is defined as MSE caused by interpolating each region of an observed image with a parametric model. Since the criterion is expressed with not only the parameters of the model but also shape and location of the regions, the criterion can not be easily minimized by the usual optimization methods, the proposed method minimizes the criterion by a GA. The proposed method also includes a processor to eliminate fragile regions with the Markov random field (MRF) model. Though the thresholds of the existent methods negatively affect image segmentation results; since no thresholds are required in the proposed method, it segments images more accurately than the existent methods.
Scalar quantization using vector measure with application to quantization of LSF parameters
Authors: H. C. Ng
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 02 (1996)

Vector quantization (VQ) is usually adopted to quantize parameters of multiple dimensions. It uses certain meaningful vector measures for codevector selection and codebook training to achieve bit reduction, at the expense of, however, higher computation and memory requirement. Due to the aforementioned shortcomings, in practical applications, scalar quantization (SQ) is still applied to quantize each of the multidimensional parameters individually. In this paper, we propose to apply a vector measure method to the table lookup in scalar quantization so as to improve its coding efficiency without increasing storage requirement. Two LSF scalar quantizers are investigated in which the weighted Euclidean distance is used as a vector measure to improve the performance of both quantizers.
Towards Integrated Services for Health Monitoring
Authors: Chunming Rong, Hein Meling, Dagfinn Waage
Venue: Proceedings of the 21st International Conference on Advanced Information Networking and Applications Workshops - Volume 02 (2007)

The emergence of short-range wireless communications hold the promise of realizing the grand vision of the next generation communication networks in which devices follow a always best-connected pattern for anybody, to anything from anywhere at anytime. Short-range wireless communications offers easy access to the global information and communications infrastructure, facilitates seamless connectivity amongst a host of computing, communications and sensing devices that collaborate to form a supporting ambient and pervasive computing environment. In this paper, we describe the IS-Home project where a we propose a novel autonomic communications middleware platform enabling a wide variety of integrated services to be installed, including health monitoring services. The motivation for the project is to take advantage of the opportunities that open and standardized protocols and technologies can represent in the future home environment.