ppxscal/embedding_network huggingface dataset:
Discriminative Feature Selection for Applause Sounds Detection
Authors: Roman Jarina, Jan Olajec
Venue: Proceedings of the Eight International Workshop on Image Analysis for Multimedia Interactive Services (2007)

The specific sounds such as applause, laughter, explosions, etc. are very helpful to understand high level semantic of audio/video content. The paper focuses on feature selection by evolutional programming for an automatic detection of applause in audio stream. A set of the most discriminative features is selected by Genetic Algorithm and Simulated Annealing. The experiments are run on more than 9 hours of audio selected from various audio and video content. The results show that the applause sound recognition improves if only a few coefficients are selected from MFCC static and dynamic features. Further, the delta-delta coefficients (the 2nd time derivates of MFCCs) highly outperform the delta coefficients.
Dirichlet Reputation Systems
Authors: Audun Josang, Jochen Haller
Venue: Proceedings of the The Second International Conference on Availability, Reliability and Security (2007)

Reputation systems can be used in online markets and communities in order to stimulate quality and good behaviour as well as to sanction poor quality and bad behaviour. The basic idea is to have a mechanism for rating services on various aspects, and a way of computing reputation scores based on the ratings from many different parties. By making the reputation scores public, such systems can assist parties in deciding whether or not to use a particular service. Reputation systems represent soft security mechanisms for social control. This article presents a type of reputation system based on the Dirichlet probability distribution which is a multinomial Bayesian probability distribution. Dirichlet reputation systems represent a generalisation of the binomial Beta reputation system. The multinomial aspect of Dirichlet reputation systems means that any set of discrete rating levels can be defined. This provides great flexibility and usability, as well as a sound basis for designing reputation systems.
Understanding congestion in IEEE 802.11b wireless networks
Authors: Amit P. Jardosh, Krishna N. Ramachandran, Kevin C. Almeroth, Elizabeth M. Belding-Royer
Venue: Proceedings of the 5th ACM SIGCOMM conference on Internet Measurement (2005)

The growing popularity of wireless networks has led to cases of heavy utilization and congestion. In heavily utilized wireless networks, the wireless portion of the network is a major performance bottleneck. Understanding the behavior of the wireless portion of such networks is critical to ensure their robust operation. This understanding can also help optimize network performance. In this paper, we use link layer information collected from an operational, large-scale, and heavily utilized IEEE 802.11b wireless network deployed at the 62nd Internet Engineering Task Force (IETF) meeting to study congestion in wireless networks. We motivate the use of channel busy-time as a direct measure of channel utilization and show how channel utilization along with network throughput and goodput can be used to define highly congested, moderately congested, and uncongested network states. Our study correlates network congestion and its effect on link-layer performance. Based on these correlations we find that (1) current rate adaptation implementations make scarce use of the 2 Mbps and 5.5 Mbps data rates, (2) the use of Request-to-Send/Clear-to-Send (RTS-CTS) prevents nodes from gaining fair access to a heavily congested channel, and (3) the use of rate adaptation, as a response to congestion, is detrimental to network performance.
Blur estimation in limited-control environments
Authors: J. R. Price
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2001. on IEEE International Conference - Volume 03 (2001)

We propose a method to estimate the blur of a fixed imaging system, without control of camera position or lighting, using an inexpensive target. Such a method is applicable, for example, in the restoration of surveillance imagery where the imaging system is available, but with only limited control of the imaging conditions. We extend a previously proposed parametric blur model and maximum likelihood technique to estimate a more general family of blur functions. The requirements for an appropriate characterization target are also discussed. Experimental results with artificial and real data are presented to validate the proposed approach.
Combating channel distortions for chaotic signals
Authors: N. Sharma
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 03 (1999)

There have been various proposals for communication with chaotic signals. But the issue of compensating the distortions introduced by the physical channel like noise, time varying fading and multi-path has not been fully addressed. In this paper, we first describe a noise reduction method for chaotic signals corrupted by additive noise. The method uses the phenomenon of chaos synchronization to approximate the maximum likelihood (ML) decoder for the AWGN channel. Further we use a synchronizing receiver to nullify slowly time varying fading and multi-path. We find the region of operation for such a receiver and show how the time varying parameters characterizing such channels can be tracked at the receiver.
Parameter Sweeps for Functional MRI Research in the "Virtual Laboratory for e-Science" Project
Authors: Sylvia D. Olabarriaga, Aart J. Nederveen, Breanndan O' Nuallain
Venue: Proceedings of the Seventh IEEE International Symposium on Cluster Computing and the Grid (2007)

Image analysis is an important component of neuroscience research. The ICT infrastructure and technical knowledge needed to perform (large scale) neuroimaging studies, however, is often not available to the neuroscientists. The "Virtual Laboratory for e-Sciences project provides an advanced (grid) infrastructure offering data and computing services to researchers from several application domains. In this paper we describe how this infrastructure is used in the context of functional Magnetic Resonance Imaging (MRI) research, which is devoted to the study of brain activity due to stimulation. Our experience in using a generic application (Nimrod, Monash University, Australia) to manage large parameter sweep experiments is presented. These experiments were performed to investigate the effect of one parameter (delay in the hemodynamic response function) in the analysis result, but also to evaluate the available infrastructure (grid resources and experiment management services). Initial results indicate that it is feasible and simple to perform large image analysis experiments using Nimrod once the environment has been properly prepared.
A world wide web-to-database connectivity using Tcl/Tk: the hydrology-meteorology toolkit
Authors: François Chevenet, Guillaume Le Stum
Venue: Proceedings of the 5th conference on Annual Tcl/Tk Workshop 1997 - Volume 5 (1997)

The Hydrology-Meteorology Toolkit is a Tcl/Tk applets library for numerical/graphical processing hydrometeorological data. It uses Tcl/Tk as a basic language. With the Tcl/Tk Plugin installed on the W3 browser side, applets use the HTTP protocol for querying an Oracle database server and managing i/o C programs towards Tcl CGI scripts.
An integrated signal processing framework for multiuser CDMA communications
Authors: A. M. Sayeer
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 05 (1999)

The major signal processing challenges in wireless CDMA systems stem from time-varying multipath propagation effects, multi-access interference (MAI), and the complexity of the DSP algorithms. We propose a framework based on canonical multipath-Doppler coordinates for addressing these issues in an integrated fashion. The canonical coordinates are derived from a fundamental characterization of channel propagation dynamics in terms of discrete multipath-delayed and Doppler-shifted copies of the transmitted waveform. These delayed and Doppler-shifted spreading waveforms constitute a natural fixed basis and dictate a canonical low-dimensional processing. In addition to providing a robust vehicle for channel modeling and estimation the framework facilitates exploitation of dispersion effects for MAI suppression via subspace-based processing in the canonical coordinates. Finally, the low-dimensional subspace formulation affords a direct handle on the complexity of the DSP algorithms. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
TQM and collaborative learning: a perfect match
Authors: L. Null
Venue: Proceedings of the Frontiers in Education Conference,1997. on 27th Annual Conference. Teaching and Learning in an Era of Change. - Volume 01 (1997)

Total quality management has long been considered a philosophy of management and leadership in industry. Because educators are becoming increasingly concerned with various methods of teaching, TQM principles are also finding their way into the classroom. These principles advocate empowering students to learn by directing them to take a more active part in the learning process. Perhaps one of the most interesting areas for TQM in an educational setting is its use with collaborative learning. Proper leadership and management within student peer groups are essential for successful collaboration, and many TQM group concepts can be applied to the student groups to achieve this. This paper describes the author's experiences with TQM and collaborative learning in the classroom. Various team and motivational techniques are discussed as well as the results from combining these two different philosophies of teaching.
HostDB: the best Damn host2DNS/DHCP script ever written
Authors: Thomas Limoncelli
Venue: Proceedings of the 19th conference on Large Installation System Administration Conference - Volume 19 (2005)

HostDB is a system for generating DNS zone files, BIND configurations, and ISC DHCP server configurations. It is extremely simple yet powerful, which makes it easy to deploy. It is not so complicated that it requires an SQL database or web server. It is not a single generation script but a complete system that includes tools for deploying the files that are generated. The system is written in Perl and shell and makes heavy use of make. The zone files that it generates look handmade, except that they are clean. Powerful tools are also provided to aid in the conversion from legacy systems. HostDB is the third generation of my DNS maintenance systems and embodies not just superior software but also best practices in system administration. HostDB uses small tools that combine to achieve large goals. Initial deployment can be done in stages to reduce risk. Deployment of updates is fully automated. It rocks.
Physics based virtual machines
Authors: T. Impelluso
Venue: Proceedings of the Frontiers in Education Conference, 2001. 31st Annual - Volume 02 (2001)

In 1998 the Department of Mechanical Engineering at San Diego State University began developing a series of courses using virtual reality as a tool to integrate the concepts of mechanical engineering. As the seminal project of these four classes, students are required to select a machine from the world around them and reproduce it in 3D virtual reality. Each of these machines has an inherent physical law that governs an aspect of its function, and students are expected to write the software governing the simplified physics. This paper discusses various aspects of the four courses, but focuses on the last one.
KDE: interface, standards, and inter-process communication
Authors: Ellis Whitehead
Venue: Proceedings of the 5th annual Linux Showcase & Conference - Volume 5 (2001)

KDE is one of the leading *nix desktop environments, and new developments are integrated into the system at a steady and rapid rate. Many recent developments are apparent in the user interface, but much work has also been done which is transparent to the end-user. It is this behind-the-scenes functionality which this talk investigates, specifically looking at Interoperability with other desktop environments, Component reuse, and Interprocess Communication (IPC).
Oscillation of a forced super-linear second order differential equation with impulses
Authors: Xiuxiang Liu, Zhiting Xu
Venue: Computers Mathematics with Applications (2007)

Some oscillation criteria are established for a forced super-linear second order differential equation with impulses. Those results extend some well-known results for the equation without impulses, which are different from most existing ones in that they are based only on information on a sequence of subintervals of [t"0,~), rather than on the whole half-linear interval.
ALPH: a domain-specific language for crosscutting pervasive healthcare concerns
Authors: Jennifer Munnelly, Siobhán Clarke
Venue: Proceedings of the 2nd workshop on Domain specific aspect languages (2007)

Pervasive healthcare is an advancing discipline that applies ubiquitous computing features to applications deployed in the healthcare domain. In these applications, ubiquitous computing concerns and health informatics concerns are entwined with base functionality resulting in significant, complex crosscutting code. Domainspecific languages (DSLs) can reduce development effort by providing higher level programming abstractions for domain-specific functionality. We introduce ALPH (Aspect Language for Pervasive Healthcare); a DSL that provides domain-specific constructs for tasks and entities within the pervasive healthcare domain. The DSL is translated into an aspect language and the crosscutting behaviour is weaved. We describe an example implementation to illustrate the level of abstraction that can be achieved using domain-specific constructs.
An architectural enhancement for reducing background computation in adaptive motion estimation
Authors: V. G. Moshnyaga
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 06 (2000)

A new architectural enhancement to eliminate redundant operations in computationally adaptive block-matching (BM) motion estimation is proposed. The key step of this work is to use binary-matching to define image regions with the static background content and then exclude these regions from the actual motion estimation. According to experiments, the approach maintains the highest PSNR, while making as half as less computations in comparison to the adaptive BM or 1/8 of the computations required by the full-search BM. An implementation scheme is presented.
A Relationship-Driven Framework for Model Merging
Authors: Mehrdad Sabetzadeh, Shiva Nejati, Steve Easterbrook, Marsha Chechik
Venue: Proceedings of the 29th International Conference on Software Engineering Workshops (2007)

A key problem in model-based development is merging a set of distributed models into a single seamless model. To merge a set of models, we need to know how they are related. In this position paper, we discuss the methodological aspects of describing the relationships between models. We argue that relationships between models should be treated as first-class artifacts in the merge problem and propose a general framework for model merging based on this argument. We illustrate the usefulness of our framework by instantiating it to the state-machine modelling domain and developing a flexible tool for merging state-machines.
Collaboration, English composition, and the engineering student: constructing knowledge in the Integrated Engineering Program
Authors: M. Green
Venue: Proceedings of the 26th Annual Frontiers in Education - Volume 01 (1996)

To meet the needs of today's engineering in a global technology-based environment, programs like the Freshman Integrated Program in Engineering (FIPE) must produce engineers who can work creatively in teams. Our program must also produce students who can think critically about engineering, who can construct knowledge in teams, and who can do so both through talking and through writing. To meet this goal, we present writing as problem-solving thereby helping students to construct knowledge about issues and ethical dilemmas in engineering through writing. Hence, English composition can enhance and reinforce the construction of knowledge that is occurring in other classes the students take. If the composition teacher ties collaborative writing tasks to engineering issues and ethical dilemmas, the students will benefit in two ways: from the practice they gain in collaborative writing before they take more senior technical writing classes; and from the ability to explore issues and ethics that other classes may raise but do not have time to thoroughly develop. One example of a collaborative writing task on which students collaborate from invention to final revision is the team research paper our students write on a technological versus a social fix to a problem they choose to study. Our paper briefly addresses the composition theory behind collaborative writing and then shows how students can collaborate on such a paper from invention to revision.
Exploring Adaptive Power Saving Schemes for Mobile VoIP Devices in IEEE 802.11 Networks
Authors: Shuvo Chatterjee, Dietrich Falkenthal, Tormod Ree
Venue: Proceedings of the Second International Conference on Digital Telecommunications (2007)

Current IEEE 802.11 power saving schemes provide limited savings for VoIP specific wireless traffic. This paper characterizes traffic from the two most popular VoIP service providers in the United States with hopes of developing an improved approach to save power. It proposes a novel scheme, named Adaptive Microsleep (AMS), as well as an alternative scheme named Non-Adaptive Microsleep (NAMS). Both AMS and NAMS are well suited for power saving on mobile VoIP devices by increasing the amount of time the devices spend in a lowpower sleep state, but doing so without introducing additional delays that would noticeably deteriorate voice quality. Simulations show that both schemes successfully satisfy both of these primary goals, saving up to 83% power, while also meeting a secondary goal of not requiring large infrastructure changes to 802.11.
Formal Specs Reuse with Embedded Systems Design Behavioral and Architectural Specifications in Real-Time Application Domains
Authors: Miroslav Sveda
Venue: Proceedings of the Second International Conference on Systems (2007)

This paper deals with reuse of architectural and behavioral specifications of embedded systems employing finite-state and timed automata. The contribution proposes not only how to represent a system's formal specification as an application pattern structure of specification fragments, but also how to measure similarity of formal specifications for retrieval with case-based reasoning support. The paper provides also an insight into case-based reasoning support as applied to formal specification reuse by application patterns built on finite-state and timed automata. Those application patterns create a base for a pattern language supporting reuse-oriented design process for a class of real-time embedded systems.
FPGA-based networking systems for high data-rate and reliable in-vehicle communications
Authors: Sergio Saponara, Esa Petri, Marco Tonarelli, Iacopo Del Corona, Luca Fanucci
Venue: Proceedings of the conference on Design, automation and test in Europe (2007)

The amount of electronic systems introduced in vehicles is continuously increasing: X-by-wire, complex electronic control systems and above all future applications such as automotive vision and safety warnings require in-car reliable communication backbones with the capability to handle large amount of data at high speeds. To cope with this issue and driven by the experience of aerospace systems, the Space Wire standard, recently proposed by the European Space Agency (ESA), can be introduced in the automotive field. The SpaceWire is a serial data link standard which provides safety and redundancy and guarantees to handle data-rates up to hundreds of Mbps. This paper presents the design of configurable SpaceWire router and interface hardware macrocells, the first in state of the art compliant with the newest standard extensions, Protocol Identification (PID) and Remote Memory Access Protocol (RMAP). The macrocells have been integrated and tested on antifuse technology in the framework of an ESA project. The achieved performances of a router with 8 links, 130 Mbps data-rate, 1.5 W power cost, meet the requirements of future automotive electronic systems. The proposed networking solution simplifies the connectivity, reducing also the relevant volume and mass budgets, provides network safety and redundancy and guarantees to handle very high bandwidth data flows not covered by current standards as CAN or FlexRay.
Software IC Revised: A New Approach of Component-Based Software Design with Software Slots
Authors: Shangwei Duan, Xiaobu Yuan
Venue: Proceedings of the Sixth International IEEE Conference on Commercial-off-the-Shelf (COTS)-Based Software Systems (2007)

By investigating the failure of Software IC in object-oriented technology and studying the characteristics of component-based or COTS-based software technologies, this paper revises Software IC and develops a software-slot-oriented strategy for the design of component-based software systems. This new strategy introduces requirements directly into the design of component-based systems, and allows architects to focus on system frameworks without too much concern about components. This work provides a mechanism to deal with the increasingly complex interface logics of COTS systems, and suggests a possible guidance for component standardization. Effectiveness and availability of the proposed approach are illustrated with a case study that applies the software-slot-oriented design on a practical component-based software system.
Exploring selection mechanisms for an agent-based distributed evolutionary algorithm
Authors: E. A. Eiben, M. Schoenauer, J. L. J. Laredo, P. A. Castillo, A. M. Mora, J. J. Merelo
Venue: Proceedings of the 2007 GECCO conference companion on Genetic and evolutionary computation (2007)

In this paper we propose an agent-based model of evolutionary algorithms (EAs) which extends seamlessly from concurrent single-host to distributed multi-host installations. Since the model is based on locally executable selection, we focus on the comparison of two selection mechanisms which accomplish with such a restriction: the classical tournament method and a new one called autonomous selection. Using the latter method the population size changes during runtime, hence it is not only interesting as a new selection mechanism, but also from the perspective of scalable networks.
Congestion-controlled best-effort communication for networks-on-chip
Authors: J. W. van den Brand, C. Ciordas, K. Goossens, T. Basten
Venue: Proceedings of the conference on Design, automation and test in Europe (2007)

Congestion has negative effects on network performance. In this paper, a novel congestion control strategy is presented for Networks-on-Chip (NoC). For this purpose we introduce a new communication service, congestion-controlled best-effort (CCBE). The load offered to a CCBE connection is controlled based on congestion measurements in the NoC. Link utilization is monitored as a congestion measure, and transported to a Model Predictive Controller (MPC). Guaranteed bandwidth and latency connections in the NoC are used for this, to assure progress of link utilization data in a congested NoC. We also present a simple but effective model for link utilization for the model-based predictions. Experimental results show that the presented strategy is effective and has reaction speeds of several microseconds which is considered acceptable for realtime embedded systems.