ppxscal/embedding_network huggingface dataset:
Optimization by simulation metamodelling methods
Authors: Russell C. H. Cheng, Christine S. M. Currie
Venue: Proceedings of the 36th conference on Winter simulation (2004)

We consider how simulation metamodels can be used to optimize the performance of a system that depends on a number of factors. We focus on the situation where the number of simulation runs that can be made is limited, and where a large number of factors must be included in the metamodel. Bayesian methods are particularly useful in this situation and can handle problems for which classical stochastic optimization can fail. We describe the basic Bayesian methodology, and then an extension to this that fits a quadratic response surface which, for function minimization, is guaranteed to be positive definite. An example is presented to illustrate the methods proposed in this paper.
Augmented Reality Tangible Interface for Distributed Design Review
Authors: Ronald Sidharta, James Oliver, Adrian Sannier
Venue: Proceedings of the International Conference on Computer Graphics, Imaging and Visualisation (2006)

Design review is a crucial step in the Product Creation Process (PCP). In a design review, CAD software is often used to show the design result, however, CAD software's interface complexity frequently prevents diverse team members from directly interacting with the CAD models.. This is further exacerbated when the design review is conducted in distributed fashion. The goal of this paper is to consider an alternative to 2D desktop based interfaces for design review, called Augmented Tangible Interface (ATI). Moreover, as a continuation of our previous work [16], this paper describes the use and the implementation of the ATI for distributed design review.
Optimistic concurrency control and recovery in a multi personal computer system
Authors: Jakob Karszt, Herbert Kuss, Georg Lauson
Venue: ACM SIGSMALL Newsletter (1982)

In this paper we present an attractive concurrency control and recovery method to manage the transactions of a multi user Personal Computer system on a shared data base in a star constellation.
Erratum to: "High-speed systolic architectures for finite field inversion" [Integration 38(3) (2005) 383-398]
Authors: Z. Yan, D. V. Sarwate, Z. Liu
Venue: Integration, the VLSI Journal (2006)

The architecture with distributed control described in this paper does not work as claimed. The correct details are provided in this note.
The design of history mechanisms and their use in collaborative educational simulations
Authors: Catherine Plaisant, Anne Rose, Gary Rubloff, Richard Salter, Ben Shneiderman
Venue: Proceedings of the 1999 conference on Computer support for collaborative learning (1999)

Reviewing past events has been useful in many domains. Videotapes and flight data recorders provide invaluable technological help to sports coaches or aviation engineers. Similarly, providing learners with a readable recording of their actions may help them monitor their behavior, reflect on their progress, and experiment with revisions of their experiences. It may also facilitate active collaboration among dispersed learning communities. Learning histories can help students and professionals make more effective use of digital library searching, word processing tasks, computer-assisted design tools, electronic performance support systems, and web navigation.This paper describes the design space and discusses the challenges of implementing learning histories. It presents guidelines for creating effective implementations, and the design tradeoffs between sparse and dense history records. The paper also presents a first implementation of learning histories for a simulation-based engineering learning environment called SimPLE (Simulated Processes in a Learning Environment) for the case of a semiconductor fabrication module, and reports on early user evaluation of learning histories implemented within SimPLE.
Engaging in a Conversation with Synthetic Agents along the Virtuality Continuum
Authors: Elisabeth Andre
Venue: Proceedings of the IEEE/WIC/ACM international conference on Intelligent Agent Technology (2006)

During the last decade research groups as well as a number of commercial software developers have started to deploy embodied conversational characters in the user interface especially in those application areas where a close emulation of multimodal human-human communication is needed. Incarnations of such characters differ widely in type and amount of embodiment - starting from simplistic cartoon-style 2D representations of faces, fully embodied virtual humans in 3D virtual worlds to physically embodied androids co-habiting the user's real world. Despite of their variety, most of these characters have one thing in common: In order to enter the user's physical world, they need to be physical themselves. My talk focuses on challenges that arise when embedding synthetic conversational agents in the user's physical world.
A computation of the sliding window recursive QR decomposition
Authors: P. Strobach, D. Goryn
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1993. ICASSP-93 Vol 4., 1993 IEEE International Conference on - Volume 04 (1993)

A set of recursions for sequential updating of QR based algorithms in finite (or sliding) windows using orthonormal Givens plane rotations is presented. These recursions can be used for (1) sliding window spatial QR-RLS adaptive filtering including implicit error computation and/or (2) sliding window tracking of orthonormal database for array processing applications. The proposed sliding window QR algorithms have approximately twice the computational complexity when compared with the classical exponentially weighted growing window QR algorithms. They are based on very elementary computation structures which are familiar from the well-known Gentleman and Kung array.
Research on a Fuzzy Controller for Hyperbaric Chamber
Authors: Shengzhi Yuan, Xiaofang Xie, Tao Sun, Guang Hu
Venue: Proceedings of the First International Conference on Innovative Computing, Information and Control - Volume 1 (2006)

The Hyperbaric Chamber (HBC) is a kind of special medical facility using for oxgenic therapeutics.The operation mode of HBC has developed from manual, pneumatic and electrical to compute control.In order to acquire good control perfomances, considering the demands of real-time control and security, based on system modeling of the HBC, fuzzy control was strictly discussed.In practice, a fuzzy controller was applied into an auto control system of the HBC, which was secure and reliable, and had satsified all the demands and requirements.
Effects of Aging on Arithmetic Problem-Solving: An Event-related Brain Potential Study
Authors: Radouane El Yagoubi, Patrick Lemaire, Mireille Besson
Venue: Journal of Cognitive Neuroscience (2005)

Younger and older participants were asked to indicate if 240 complex two-digit addition problems were smaller than 100 or not. Half of the problems were small-split problems (i.e., the proposed sums were 2% or 5% away from 100; e.g., 53 &plus; 49) and half were large-split problems (i.e., proposed sums were 10% or 15% away from 100; 46 &plus; 39). Behavioral and event-related potential (ERP) data revealed that (a) both groups showed a split effect on both reaction times and percent errors, (b) split effects were smaller for older than for younger adults in ERPs, and (c) the hemispheric asymmetry (left hemisphere advantage) reported for younger adults was reduced in older adults (age-related hemispheric asymmetry reduction). These results suggest that older adults tend to use only one strategy to solve all problems, whereas younger adults flexibly and adaptively use different strategies for small and large-split problems. Implications of these findings for our understanding of age-related similarities and differences in arithmetic problem-solving are discussed.
An analysis of the effectiveness of temporal mapping and speech recognition for content-based multimedia indexing
Authors: Matt-Mouley Bouamrane, Saturnino Luz
Venue: Proceedings of the First International Workshop on Semantic Media Adaptation and Personalization (2006)

We present an extensive analytical evaluation of the effectiveness of a multimedia (text and speech) meeting browser which employs a combination of automatic speech recognition and a novel content indexing technique called temporal mapping in order to uncover contextual relations between audio and text segments in recorded remote meetings. Results show that even simple temporal mapping can effectively support browsing and retrieval of recorded audio segments and improve retrieval performance in situations where speech recognition would on its own have exhibited prohibitively high word error rates.
A note on the Dixon formula for a finite hypergeometric series
Authors: B. M. Brown, M. S. P. Eastham
Venue: Journal of Computational and Applied Mathematics (2006)

This is a note on the paper [4, B.M. Brown, M.S.P. Eastham, Extensions of the Kummer evaluation of a finite hypergeometric series, J. Comput. Appl. Math., to appear, doi: 10.1016/j.cam.2005.06.018].
Investigation of error rates when controlling multiple uninhabited combat aerial vehicles
Authors: Sasanka Prabhala, Jennie Gallimore
Venue: Proceedings of the 36th conference on Winter simulation (2004)

As systems become more and more complex the use of automation tools becomes more important. Although automation is introduced to reduce human workload, improve situational awareness, and system reliability, increases in automation features also increase the overall complexity of the system. Despite the fact that research has been and is being conducted investigating the effects of automation on human performance, the results are often contradictory. This suggests the need for a universal way of presenting results so that trade-offs can be carried out between different studies. The purpose of this research was to investigate how a decision structure approach might be used as an aid for designers and researchers to conduct design trade-offs when designing user interfaces for Uninhabited Combat Aerial Vehicles (UCAVs).
Distributed Immersed Boundary Simulation in Titanium
Authors: E. Givelberg, K. Yelick
Venue: SIAM Journal on Scientific Computing (2006)

The immersed boundary method is a general numerical method for modeling elastic boundaries immersed within a viscous, incompressible fluid. It has been applied to several biological and engineering systems, including large-scale models of the heart and cochlea. These simulations have the potential to improve our basic understanding of the biological systems they model and aid in the development of surgical treatments and prosthetic devices. Despite the popularity of the immersed boundary method and the desire to scale the problems to accurately capture the details of the physical systems, parallelization for large-scale distributed memory machines has proved challenging. The primary difficulty is in achieving a load-balanced computation, while maintaining low communication costs when modeling the interactions between the fluid and the moving immersed boundary. In this paper we describe a parallelized algorithm for the immersed boundary method that is designed for scalability on distributed memory multiprocessors and clusters of SMPs. It is implemented using the Titanium language, a Java-based language designed for high performance scientific computing. Our software package, called IB, takes advantage of the object-oriented features of Titanium to provide a framework for simulating immersed boundaries that separates the generic immersed boundary method code from the specific application features that define the immersed boundary structure and the forces that arise from those structures. Our results demonstrate the scalability of our design and the feasibility of large-scale immersed boundary computations with the IB package.
Context Service Framework for the Mobile Internet
Authors: Sailesh Sathish, Dana Pavel, Dirk Trossen
Venue: Proceedings of the International Workshop on System Support for Future Mobile Computing Applications (2006)

Many context aware systems have been developed especially for mobile devices, where proximity to users allows for collecting more reliable context data. However, many solutions suffer from lack of interoperability, complexity and adoption difficulties. We describe a complete framework for context provision for mobile web applications that is based on technologies that have already been deployed as well as endorsed by standardization bodies. Our framework includes as the main parts a context representation model that is an extension of an ongoing standardization activity within World Wide Web Consortium (W3C) called Delivery Context Interfaces (DCI) targeted to consumer web applications, and a SIP-event based framework for context data provisioning. We further provide a proof-ofconcept implementation of individual components along with application scenarios utilizing our proposed framework and our ongoing integration efforts for combining the two main framework parts.
Quantum Correlations in a Generalized Spin Star System
Authors: Francesca Palumbo, Anna Napoli, Antonio Messina
Venue: Open Systems Information Dynamics (2006)

The problem of detecting quantum signatures in the correlations formed in dynamical evolution of quantum bipartite systems receives a lot of attention in current literature. Generally speaking, the occurrence of correlations between two observables of a system does not necessarily reflect nonclassical behaviour. In this paper, the exact dynamics of a pair of uncoupled spins 1/2 interacting with a common spin 1/2 bath is investigated. Starting from a separable initial condition, the ability of the system to develop purely quantum correlations is brought to light. Physical interpretation of the concurrence function as well as a suggestion on how to measure it are given.
Oracles Are Subtle But Not Malicious
Authors: Scott Aaronson
Venue: Proceedings of the 21st Annual IEEE Conference on Computational Complexity (2006)

Theoretical computer scientists have been debating the role of oracles since the 1970's. This paper illustrates both that oracles can give us nontrivial insights about the barrier problems in circuit complexity, and that they need not prevent us from trying to solve those problems.
Handling of current time in native XML databases
Authors: Bela Stantic, Guido Governatori, Abdul Sattar
Venue: Proceedings of the 17th Australasian Database Conference - Volume 49 (2006)

The introduction of Native XML databases opens many research questions related to the data models used to represent and manipulate data, including temporal data, in XML. Increasing use of XML for Valid Web pages warrants an adequate treatment of now in Native XML databases. In this study, we examined how to represent and manipulate now-relative temporal data. We identify different approaches being used to represent current time in XML temporal databases, and introduce the notion of storing variables such as 'now' or 'UC' as strings in XML native databases. All approaches are empirically evaluated on a query that time-slices the timeline at the current time. The experimental results indicate that the proposed extension offers several advantages over other approaches: better semantics, less storage space and better response time.
A Multi-Agent System for Building Control
Authors: Bing Qiao, Kecheng Liu, Chris Guy
Venue: Proceedings of the IEEE/WIC/ACM international conference on Intelligent Agent Technology (2006)

Energy efficiency and occupants' comfort are two important factors for evaluating the performance of a modern work environment. While energy efficiency, pivotal to energy savings, has been improving steadily over the past decades, a great effort has been made to address occupants' comfort, pivotal to work productivity, too. Not surprisingly, many researchers have endeavored to combine the expertise from the two areas to create an intelligent work environment, where energy efficiency is achieved without compromising occupants' comfort. Previous studies provide insightful discussions and exciting experiments. Most of them, however, stopped short of commercialization and adoption in daily life due to the limitations of hardware and software technologies at the time. With the advance of agent technology, wireless sensor network and open standards in building automation/management systems, it is now feasible to build such an intelligent system for energy efficient and occupants satisfied building control, as envisaged and explored by those pioneers. This paper introduces some ongoing research on developing a multi-agent system that combines an EDA agent model, personalized space, policy management, building performance quotient, wireless sensor network, and building automation/management system to provide an intelligent work environment.
Pasting and Encoding: Note-Taking in Online Courses
Authors: Aaron Bauer, Kenneth Koedinger
Venue: Proceedings of the Sixth IEEE International Conference on Advanced Learning Technologies (2006)

Studies have shown that both the act of note-taking and the use of notes for review can promote learning. Many note-taking applications have been developed for computer-based learning content. In general, they include advanced annotation functionality, and are geared toward supporting collaboration and discussion. Though these devices have been shown to change note-taking behavior, their effect on learning has not been evaluated. The goal of our research is to evaluate the effect of specific features of note-taking applications on behavior and learning, in order to develop guidelines for advanced note-taking applications that promote learning. These applications could be used as the basis for a variety of educational activities, including collaboration. In this paper, we present the results of an experiment evaluating a basic feature of note-taking technology: copy-paste. Our findings indicate that copy-paste functionality can be detrimental to learning. We describe potential implications of these results for the developers of notetaking applications.
A novel neural network for a class of convex quadratic minimax problems
Authors: Xing-Bao Gao, Li-Zhi Liao
Venue: Neural Computation (2006)

Based on the inherent properties of convex quadratic minimax problems, this article presents a new neural network model for a class of convex quadratic minimax problems. We show that the new model is stable in the sense of Lyapunov and will converge to an exact saddle point in finite time by defining a proper convex energy function. Furthermore, global exponential stability of the new model is shown under mild conditions. Compared with the existing neural networks for the convex quadratic minimax problem, the proposed neural network has finite-time convergence, a simpler structure, and lower complexity. Thus, the proposed neural network is more suitable for parallel implementation by using simple hardware units. The validity and transient behavior of the proposed neural network are illustrated by some simulation results.
Analyzing the MAC-level behavior of wireless networks in the wild
Authors: Ratul Mahajan, Maya Rodrig, David Wetherall, John Zahorjan
Venue: ACM SIGCOMM Computer Communication Review (2006)

We present Wit, a non-intrusive tool that builds on passive monitoring to analyze the detailed MAC-level behavior of operational wireless networks. Wit uses three processing steps to construct an enhanced trace of system activity. First, a robust merging procedure combines the necessarily incomplete views from multiple, independent monitors into a single, more complete trace of wireless activity. Next, a novel inference engine based on formal language methods reconstructs packets that were not captured by any monitor and determines whether each packet was received by its destination. Finally, Wit derives network performance measures from this enhanced trace; we show how to estimate the number of stations competing for the medium. We assess Wit with a mix of real traces and simulation tests. We find that merging and inference both significantly enhance the originally captured trace. We apply Wit to multi-monitor traces from a live network to show how it facilitates 802.11 MAC analyses that would otherwise be difficult or rely on less accurate heuristics.
Risk Averse Shortest Path Planning in Uncertain Domains
Authors: Wilhelm Dangelmaier, Benjamin Klopper, Jens Wienstroer, Andre Doring
Venue: Proceedings of the International Conference on Computational Inteligence for Modelling Control and Automation and International Conference on Intelligent Agents Web Technologies and International Commerce (2006)

Real world problems, e.g. from transport domain, are typically non-deterministic and uncertain. Although there are some approaches, which try to forecast uncertain parameters like travel time, the uncertainty is rarely included in the planning process. In this paper a probabilistic forecasting method for travel time in a railway network is introduced which considers the dependencies between decisions during the planning process. The information provided by forecasting is used to develop a risk averse shortest path algorithm which minimizes the risk of delay.
Advanced Bacterial Foraging and Its Application Using Fuzzy Logic Based Variable step Size and Clonal Selection of Immune Algorithm
Authors: Dong Hwa Kim, Jae Hoon Cho
Venue: Proceedings of the 2006 International Conference on Hybrid Information Technology - Volume 01 (2006)

This paper suggests advanced bacterial foraging strategy using membership function of fuzzy logic and clonal selection of immune system. Bacteria foraging based optimal solution is defined by the positions of each member in the population of the S bacteria at the jth chemotactic step, kth reproduction step, and lth elimination-dispersal event. Therefore, chemotactic step is important to have an optimal solution in system. Up to now, a foraging strategy uses fixed chemotactic step. This paper introduces clonal selection of immune algorithm and fuzzy logic into bacterial foraging to enhance running speed and patch of optimal condition (e.g., group of objective with conditions). This approach provides us with novel hybrid model based on foraging behavior and clonal selection for a higher running time and optimal solution.
Nonparametric Background Modeling Using the CONDENSATION Algorithm
Authors: Xingzhi Luo, Suchendra M. Bhandarkar, Wei Hua, Haisong Gu
Venue: Proceedings of the IEEE International Conference on Video and Signal Based Surveillance (2006)

Background modeling for dynamic scenes is an important problem in the context of real time video surveillance systems. Several nonparametric background models have been proposed to model dynamic scenes and promising results have been reported. However, a critical problem with existing nonparametric models is their high computational requirement because a large set of background samples is usually needed to model the background. In this paper, a nonparametric background model that uses an importance sampling method is proposed to overcome the problem of high computational complexity of conventional nonparametric background models. Instead of using a large number of samples to model the background probability densities, much fewer background samples are maintained and updated using the CONDENSATION algorithm. A Markov Random Field model is used to enhance the foreground detection results by imposing spatial constraints. Experimental results show that the proposed method is much faster and computationally more efficient than existing nonparametric background models. The proposed technique is observed to match the capabilities of existing nonparametric background models in terms of being able to effectively model dynamic backgrounds but with greatly reduced computational complexity.