ppxscal/embedding_network huggingface dataset:
On the convergence properties of multidelay frequency domain adaptive filter
Authors: Junghsi Lee
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 04 (1999)

Frequency domain adaptive filters have gained much attention. Although some work on performance analysis has been reported, there is still much to be done. This paper presents a convergence analysis of the multidelay frequency domain adaptive filter. We show, for the first time, the relationship between the convergence step-size and the convergence rate. The effect of step-size on adaptation accuracy is presented also. Extensive simulation results are provided to support the analysis. Surprisingly, all block processing algorithms run well even though the step-sizes utilized are much bigger than the convergence bounds currently available in the literature.
Portfolio allocation using XCS experts in technical analysis, market conditions and options market
Authors: Sor Ying (Byron) Wong, Sonia Schulenburg
Venue: Proceedings of the 2007 GECCO conference companion on Genetic and evolutionary computation (2007)

Schulenburg (2000) first proposed the idea to model different trader types by supplying different input information sets to a group of homogenous LCS agent. Gershoff (2006) investigated this idea further with XCS agent. This paper takes an extra step to build a trading system that not only adopts the multi-XCS agent idea, but also utilizes knowledge from discretization theory, modern portfolio theory, options theory and methods of combining multiple models. In comparison to previous work, a wider range of input data were used including technical analysis, general market conditions and options market conditions. Secondly, quantization of continuous financial series was achieved using entropy-based discretization and histogram equalization. Thirdly, subtle investment strategies can now be generated as a result of taking stock price magnitude into account. Finally, multiple agents' predictions were combined using a variant of stacking. Empirical results show the best-performing XCS agents always outclass benchmark agents in every stock examined. Variance is reduced after combining predictions from multiple models. The technical analysis XCS agent was able to replicate a well known technical trading rule widely used in the 60s.
High-level built-in self-testable synthesis of digital systems
Authors: Laurence Tianruo Yang
Venue:  (2006)

Driven by the rapid growth of the Internet, communication technologies, pervasive computing, automobiles, airplanes, wireless and portable consumer electronics, Embedded Systems and Systems-on-Chip (SoC) have moved from a craft to an emerging and very promising discipline in today's electronic industry.Testing of a fabricated chip is a process that applies a sequence of inputs to the chip and analyzes the chip's output sequence to ascertain whether it functions correctly. As the chip density grows to beyond millions of gates, Embedded Systems and Systems-on-Chip testing becomes a formidable task. Vast amounts of time and money have been invested by the industry just to ensure the high testability of products. On the other hand, as design complexity drastically increases, current gate-level design and test methodology alone can no longer satisfy stringent time-to-market requirements. The High-Level Test Synthesis (HLTS) system, which this thesis mainly focuses on, is to develop new systematic techniques to integrate testability consideration, specially with Built-In Self-Test (BIST) techniques into the synthesis process. It makes it possible for an automatic synthesis tool to predict testability of the synthesized embedded systems or chips accurately in the early stage. It also optimizes the designs in terms of test cost as well as performance and hardware area cost.
Security holes... who cares?
Authors: Eric Rescorla
Venue: Proceedings of the 12th conference on USENIX Security Symposium - Volume 12 (2003)

We report on an observational study of user response following the OpenSSL remote buffer overflows of July 2002 and the worm that exploited it in September 2002. Immediately after the publication of the bug and its subsequent fix we identified a set of vulnerable servers. In the weeks that followed we regularly probed each server to determine whether its administrator had applied one of the relevant fixes. We report two primary results. First, we find that administrators are generally very slow to apply the fixes. Two weeks after the bug announcement, more than two thirds of the servers were still vulnerable. Second, we identify several weak predictors of user response and find that the pattern differs in the period following the release of the bug and that following the release of the worm.
2007 Special Issue: Fading memory and time series prediction in recurrent networks with different forms of plasticity
Authors: Andreea Lazar, Gordon Pipa, Jochen Triesch
Venue: Neural Networks (2007)

We investigate how different forms of plasticity shape the dynamics and computational properties of simple recurrent spiking neural networks. In particular, we study the effect of combining two forms of neuronal plasticity: spike timing dependent plasticity (STDP), which changes the synaptic strength, and intrinsic plasticity (IP), which changes the excitability of individual neurons to maintain homeostasis of their activity. We find that the interaction of these forms of plasticity gives rise to interesting network dynamics characterized by a comparatively large number of stable limit cycles. We study the response of such networks to external input and find that they exhibit a fading memory of recent inputs. We then demonstrate that the combination of STDP and IP shapes the network structure and dynamics in ways that allow the discovery of patterns in input time series and lead to good performance in time series prediction. Our results underscore the importance of studying the interaction of different forms of plasticity on network behavior.
Reference Path Ad Hoc Routing Mechanism
Authors: Fabricio L. Figueiredo, Paulo Cardieri, Marcel C. Castro, Marcos A. Siqueira
Venue: Proceedings of the 21st International Conference on Advanced Information Networking and Applications Workshops - Volume 02 (2007)

The purpose of this work is to present the Reference Path Ad hoc Routing (REPAR) mechanism, which has been designed to optimize the performance of reactive ad hoc routing protocols, in terms of key metrics for real time services, such as end-to-end delay and jitter. In order to accomplish such a challenge, efficient rerouting and constrained flooding schemes are supported, which minimize the impacts of topology dynamics. For validation purposes, REPAR is applied to AODV protocol and simulations are evaluated with focus on voice traffic and mobility scenario. The simulation results show that the proposed approach leads to significant performance improvement of AODV, in all scenarios and metrics of interest.
Prediction of genetic susceptibility to complex diseases
Authors: Alex Zelikovsky
Venue:  (2006)

The accessibility of high-throughput biology data brought a great deal of attention to disease association studies. High density maps of single nucleotide polymorphism (SNP's) as well as massive genotype data with large number of individuals and number of SNP's become publicly available. By now most analysis of the new data is undertaken by the statistics community. In this dissertation, we pursue a different line of attack on genetic susceptibility to complex disease that adheres to the computer science community with an emphasis on design rather than analytical methodology. The main goal of disease association analysis is to identify gene variations contributing to the risk of and/or susceptibility to a particular disease. There are basically two main steps in susceptibility: (i) haplotyping of the population and (ii) predicting the genetic susceptibility to diseases. Although there exist many phasing methods for step (i), phasing and missing data recovery for data representing family trios is lagging behind, and most disease association studies are based on family trios. This study is devoted to the problem of assessing accumulated information targeting to predict genotype susceptibility to complex diseases with significantly high accuracy and statistical power. The dissertation proposes two new greedy and integer linear programming based solution methods for step (i). We also proposed several universal and ad hoc methods for step (ii). The quality of susceptibility prediction algorithm has been assessed using leave-one-out and leave-many-out tests and shown to be statistically significant based on randomization tests. The prediction of disease status can also be viewed as an integrated risk factor. A combinatorial prediction complexity measure has been proposed for case/control studies. The best prediction rate achieved by the proposed algorithms is 69.5% for Crohn's disease and 61.3% for autoimmune disorder, respectively, which are significantly higher than those achieved by universal prediction methods such as Support Vector Machine (SVM) and known statistic methods.
Health Maintenance Embedded Systems in Home Care Applications
Authors: Vilem Srovnal, Marek Penhaker
Venue: Proceedings of the Second International Conference on Systems (2007)

In this article there are described applications of embedded systems for diagnostic and maintenance planning in healthcare applications. During the recent years, there was a rapid growth in the development of maintenance telemedicine systems and monitoring devices for patients with chronic diseases and those requiring continuous telemonitoring treatments. However most of these systems only provide telemonitoring services or basic information about the health condition of the patients. For this reason an intelligent home health care embedded system that can provide to the patients with diagnosis their health status at home is developed. As a result different types of pluggable medical transducers for patients with different illnesses can be flexibly connected to the interface of the embedded system. The home care systems are possible to use as predictive diagnostic systems.
A time-based binding update in mobile IP networks with very high mobility
Authors: H. Kim, J. Song
Venue: Proceedings of the The 8th International Conference on Communication Systems - Volume 02 (2002)

Wthe e propose a time-based binding network model for efficient binding in mobile IPv6. We try to reduce the waste of link bandwidth or the processing load of a correspondent node and a home agent by binding every periodic time unit, t. This mechanism can show various advantages in the case of high mobility. The results of performance analysis show that the network load concentrated on a correspondent node or a home agent is decreased in time-based binding update model, and also our model is better than a mobile IPv6 model with regard to processing delay.
Looking for the Locus of Innovation in New Service Development
Authors: Iris Ginzburg, Allen Higgins, Yossi Lichtenstein
Venue: Proceedings of the 40th Annual Hawaii International Conference on System Sciences (2007)

Although services are the main growth engine in modern economies, there is evidence that new service development practices are ineffective. In this exploratory study, we look at the organizational roles that participate in the different stages of service innovation. We expect to find multiple roles in the creation, development and deployment of innovation in services. We suggest that this fuzziness of the locus of innovation may explain some of the difficulties in service innovation. We interviewed six senior executives in European service organizations about their recent major innovations. The data on twenty five innovations, support our main expectation that service innovation involves many organizational roles and typically aggregates more functions as the innovation process progresses. We find also that customers and customer facing functions are not central to innovation, that R&D and Business Development do not create but mostly develop innovations, and that top executives participate in the creation of new services and processes.
Stasis: flexible transactional storage
Authors: Russell Sears, Eric Brewer
Venue: Proceedings of the 7th USENIX Symposium on Operating Systems Design and Implementation - Volume 7 (2006)

An increasing range of applications requires robust support for atomic, durable and concurrent transactions. Databases provide the default solution, but force applications to interact via SQL and to forfeit control over data layout and access mechanisms. We argue there is a gap between DBMSs and file systems that limits designers of data-oriented applications. Stasis is a storage framework that incorporates ideas from traditional write-ahead logging algorithms and file systems. It provides applications with flexible control over data structures, data layout, robustness, and performance. Stasis enables the development of unforeseen variants on transactional storage by generalizing writeahead logging algorithms. Our partial implementation of these ideas already provides specialized (and cleaner) semantics to applications. We evaluate the performance of a traditional transactional storage system based on Stasis, and show that it performs favorably relative to existing systems. We present examples that make use of custom access methods, modified buffer manager semantics, direct log file manipulation, and LSN-free pages. These examples facilitate sophisticated performance optimizations such as zero-copy I/O. These extensions are composable, easy to implement and significantly improve performance.
A capstone design project for engineering technology students
Authors: S. Anwar
Venue: Proceedings of the 30th Annual Frontiers in Education - Volume 02 (2000)

This paper describes one of the capstone engineering design projects implemented by Penn State Altoona BSEMET (baccalaureate degree in electro-mechanical engineering technology) students during their senior year. This project is titled "Design and Implementation of a Vending Machine". At Penn State Altoona, the vending machine is designed and built by individual students in one semester. The paper begins with a description of the BSEMET program. Next, the paper describes the BSEMET capstone project design course (EMET 440). Finally, the paper provides a description of one of the EMET 440 capstone design projects recently completed by students. The project consists of design and implementation of a vending machine using a PLC. The paper presents the design specifications of this vending machine and provides details regarding its design and implementation. Recommendations for design improvement are presented.
Evaluating the efficacy of a terrorism question/answer system
Authors: Robert P. Schumaker, Ying Liu, Mark Ginsburg, Hsinchun Chen
Venue: Communications of the ACM (2007)

The TARA Project examined how a trio of modified chatterbots could be used to disseminate terrorism-related information to the general public.
HAND: Highly Available Dynamic Deployment Infrastructure for Globus Toolkit 4
Authors: Li Qi, Hai Jin, Ian Foster, Jarek Gawor
Venue: Proceedings of the 15th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (2007)

Grid computing is becoming more and more attractive for coordinating large-scale heterogeneous resource sharing and problem solving. Of particular interest for effective grid computing is a software provisioning mechanism. We propose a highly available dynamic deployment infrastructure, HAND, based on the Java Web Services Core of Globus Toolkit 4. HAND provides capability, availability, and extensibility for dynamic deployment of Java Web Services in dynamic grid environments. We identify the factors that have impact to dynamic deployment in static and dynamic environments. We also present the design, analysis, implementation, and evaluation of two different approaches to dynamic deployment (service level and container level), and examine the performance of alternative data transfer protocol for service implementations. Our results demonstrate that HAND can deliver significantly improved availability and performance relative to other approaches.
Multihoming in Nested Mobile Networks with Route Optimization
Authors: Angeline Deleplace, Theirry Ernst, Thomas Noel
Venue: Proceedings of the 2007 International Symposium on Applications and the Internet Workshops (2007)

With the development of wireless technologies, devices (laptop, PDA, etc.) become easily mobile. When they are moving together, they can form a mobile network. NEMO basic support was standardized to provide network mobility. As it does not define any solution for Route Optimization, it suffers from triangular routing. Optimized NEMO (ONEMO) is one of the proposed solution to solve this problem. In this paper, we study ONEMO in nested and multihomed Mobile Router (MR) configurations. One mechanism to select the best default router using policies is proposed. Information is needed to define policies in nested configurations: the nested level, and the connectivity provided by the root-MR. We propose to optimize an option of the Router Advertisement (RA) message to forward that information to the other MRs in the nested tree.
Pebble: a component-based operating system for embedded applications
Authors: John Bruno, José Brustoloni, Eran Gabber, Avi Silberschatz, Christopher Small
Venue: Proceedings of the Workshop on Embedded Systems on Workshop on Embedded Systems (1999)

The Pebble operating system is intended to support complex embedded applications. This is accomplished through two key features: (1) safe extensibility, so that the system can be constructed from untrusted components and reconfigured while running, and (2) low interrupt latency, which ensures that the system can react quickly to external events. In this paper we discuss Pebble's architecture and the underlying technology used by Pebble, and include microbenchmark performance results on three MIPS target systems. The performance measurements demonstrate that Pebble is a good platform for complex embedded applications.
Produsage
Authors: Axel Bruns
Venue: Proceedings of the 6th ACM SIGCHI conference on Creativity cognition (2007)

This paper outlines the concept of produsage as a model of describing today's emerging user-led content creation environments. Produsage overcomes some of the systemic problems associated with translating industrial-age ideas of content production into an informational-age, social software, Web 2.0 environment. Instead, it offers new ways of understanding the collaborative content creation and development practices found in contemporary informational environments.
Fast probabilistic simulation, nontermination, and secure information flow
Authors: Geoffrey Smith, Rafael Alpízar
Venue: Proceedings of the 2007 workshop on Programming languages and analysis for security (2007)

In secure information flow analysis, the classic Denning restrictions allow a programâs termination to be affected by the values of its H variables, resulting in potential information leaks. In an effort to quantify such leaks, in this work we study a simple imperative language with random assignments. We consider a âstrippingâ operation on programs and establish a fundamental relationship between the behavior of a well-typed program and of its stripped version; to prove this relationship, we introduce a new notion of fast probabilistic simulation on Markov chains. As an application, we prove that, under the Denning restrictions, well-typed probabilistic programs are guaranteed to satisfy an approximate probabilistic noninterference property, provided that their probability of nontermination is small
A women and technology program for freshman engineering students
Authors: J. Morgan
Venue: Proceedings of the 30th Annual Frontiers in Education - Volume 02 (2000)

In the Fall of 1999, Texas A&M University (TAMU) was selected as a participating university in the Virtual Development Center (VDC) program sponsored by the Institute for Women and Technology (IWT). The intent is that the ideas generated by women and for women through these centers can be realized by a cooperative effort between students and industries. A special section of the Foundations of Engineering (Engr 111/112) course at TAMU has been created in support of the VDC program. The student teams will collaborate with students from other courses, both technical and nontechnical, and at all levels. The result of this multilevel, interdisciplinary interaction is intended to be the design and implementation of idea(s). The classroom environment, interdisciplinary work, and industry interaction will give the students a very positive experience and open their eyes to many and varied engineering issues in ways that are not typically addressed by the curriculum.
WAT: a tool for classifying learning activities from a log file
Authors: Jason Ceddia, Judy Sheard, Grant Tibbey
Venue: Proceedings of the ninth Australasian conference on Computing education - Volume 66 (2007)

Web-based learning environments are now extensively used as integral components of course delivery in tertiary education. To provide an effective learning environment, it is important that educators understand how these environments are used by their students. This paper describes an approach to analysing website interactions data captured on log files that goes beyond simply tabulating frequencies of navigation path traversals through a website. A Weblog Analysis Tool (WAT) has been built to facilitate this process. WAT allows the educator to describe activities from sequences of website interactions that are meaningful in the course context. The tool is then used to processes the log file to determine which students completed these activities. The performance of activities provides insights into learning behaviour of students over the duration of the course. In this paper the application of the WAT tool is demonstrated through a study of interactions with a courseware website. The activities defined in this study relate to the learning objectives of the course and so provide the educator with an indication of how successful the website has been in assisting the students meet these objects.
Ridge: combining reliability and performance in open grid platforms
Authors: Krishnaveni Budati, Jason Sonnek, Abhishek Chandra, Jon Weissman
Venue: Proceedings of the 16th international symposium on High performance distributed computing (2007)

Large-scale donation-based distributed infrastructures need to cope with the inherent unreliability of participant nodes. A widely-used work scheduling technique in such environments is to redundantly schedule the out sourced computations to a number of nodes. We present the design and implementation of RIDGE, a reliability aware system which uses a node's prior performance and behavior to make more effective scheduling decisions. We have implemented RIDGE on top of the BOINC distributed computing infrastructure and have evaluated its performance on a live test bed consisting of 120 PlanetLab nodes. Our experimental results show that RIDGE is able to match or surpass the throughput of the best vanilla BOINC configuration under different reliability environments, by automatically adapting to the characteristics of the underlying environment. In addition, RIDGE is able to provide much lower work unit makes pans compared to BOINC, which indicates its desirability in service-oriented environments with time constraints.