ppxscal/embedding_network huggingface dataset:
Adaptive Applications for Ubiquitous Collaboration in Mobile Environments
Authors: Allan Meng Krebs, Ivan Marsic
Venue: Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 1 - Volume 1 (2004)

The wide availability of networked devices has become one of the main challenges for designers of collaborative applications. Mobile devices are not as "standardized" as stationary computers but much more diverse with respect to computing resources, connection bandwidth and display capabilities. This paper presents a framework for development of applications adaptive to the client's computing platform. The framework supports adaptation of both shared data and user interface to user preferences and display characteristics. Shared data and the user interface are each specified by an XML document. The user interface XML document specifies the interface by a generic "interface graph", which also includes the list ofthe valid data types. The generic interface graph is transformed into a device-dependant interface graph for individual client devices, using predefined device-specific mapping rules.
Adaptive topology control for wireless Ad hoc networks
Authors: Seung-Jong Park, Raghupathy Sivakumar
Venue: ACM SIGMOBILE Mobile Computing and Communications Review (2003)

Topology control in ad-hoc networks is the problem of adjusting the transmission power at network nodes in order to achieve the optimal topology that maximizes network performance. Recently, using effective topology control to optimize energy usage in the network has come into focus in the research community [1, 2]. The common thesis arrived at by existing works is that the transmission range used by mobile nodes should be the minimum required to keep the network connected. We refer to such a topology as the minimally connected topology in the rest of the paper. We argue in this work that the minimally connected topology does not always provide the optimal performance in typical ad-hoc networks. We show that in contrast, for typical ad-hoc networks with a few hundred nodes distributed over a few square miles area, the optimal topology is a function of the traffic load.
Protocol Moderators as Active Middle-Agents in Multi-Agent Systems
Authors: Chihab Hanachi, Christophe Sibertin-Blanc
Venue: Autonomous Agents and Multi-Agent Systems (2004)

Interaction protocols are widely recognized as an essential mechanism for coordination within multi-agent systems. There is thus a need for coordination models for specifying, validating, and implementing protocols, possibly open and concurrent, efficiently and reliably. This paper proposes such a model, which considers protocols as resources and each conversation among agents following the rules of a protocol as a well-identified process. To this end, a new kind of middle-agent, called Moderator, is introduced. A Moderator is in charge of monitoring a conversation so that it progresses according to the protocol rules, and provides agents with services to ease their involvement in the conversation. This model fits the organization-centered view of multi-agent systems as it strictly distinguishes the agent-level and the organization-level concerns with regard to interaction. In addition, the paper shows that this model is supported by a High-Level Petri Net language that covers all the steps of protocol engineering: design, validation, implementation. This paper presents this Moderator Coordination Model along four related dimensions: a conceptual model of protocols, a MAS architecture, a suitable modeling formalism, and an associated development process.
GridBench: A Tool for Benchmarking Grids
Authors: George Tsouloupas, Marios D. Dikaiakos
Venue: Proceedings of the 4th International Workshop on Grid Computing (2003)

The aim of the GridBench suite of Benchmarks isto bring together a core set of benchmarks for characterizingGrid nodes or collections of Grid resources.Inorder to do this in an organized and flexible way weprovide a framework for running benchmarks on Gridenvironments as well as collecting, archiving, and publishingthe results.This framework allows for convenientintegration of new and existing benchmarks intothe suite.
Proceedings of the conference on Visualization '94
Authors: Andries van Dam, Nahum Gershon, Carol Hunter
Venue: IEEE Visualization (1994)

Visualization '94 is the fifth conference in a series devoted to data visualization. The conference is sponsored by the IEEE Technical Committee on Computer Graphics in cooperation with ACM SIGGRAPH. In the short time since the first Visualization conference in San Francisco in 1990, the visualization field has continued to increase in importance and activity, while the conference itself has matured rapidly. From the beginning, the Visualization conferences have been designed to attract both visualization researchers and visualization users with a goal of providing a forum for multi-disciplinary interaction. These Proceedings represent a permanent record of the major aspects of the Conference program - the keynote events, the papers, the case studies, and the panels.
Understanding Link Quality in 802.11 Mobile Ad Hoc Networks
Authors: Gregor Gaertner, Vinny Cahill
Venue: IEEE Internet Computing (2004)

Mobile ad hoc wireless networks will extend the Internet into new territory, but current 802.11 ad hoc networks have low communication quality. This article identifies key factors that cause fluctuations in link quality and derive implications for application development.
Naturally conveyed explanations of device behavior
Authors: Michael Oltmans, Randall Davis
Venue: Proceedings of the 2001 workshop on Perceptive user interfaces (2001)

Designers routinely explain their designs to one another using sketches and verbal descriptions of behavior, both of which can be understood long before the device has been fully specified. But current design tools fail almost completely to support this sort of interaction, instead not only forcing designers to specify details of the design, but typically requiring that they do so by navigating a forest of menus and dialog boxes, rather than directly describing the behaviors with sketches and verbal explanations. We have created a prototype system, called assistance, capable of interpreting multimodal explanations for simple 2-D kinematic devices. The program generates a model of the events and the causal relationships between events that have been described via hand drawn sketches, sketched annotations, and verbal descriptions. Our goal is to make the designer's interaction with the computer more like interacting with another designer. This requires the ability not only to understand physical devices but also to understand the means by which the explanations of these devices are conveyed.
Interdisciplinarity in science: a tentative typology of disciplines and research areas
Authors: Fernanda Morillo, María Bordons, Isabel Gómez
Venue: Journal of the American Society for Information Science and Technology (2003)

Interdisciplinarity is considered the best way to face practical research topics since synergy between traditional disciplines has proved very fruitful. Studies on interdisciplinarity from all possible perspectives are increasingly demanded. Different interdisciplinarity measures have been used in case studies but, up to now, no general interdisciplinarity indicator useful for Science Policy purposes has been accepted. The bibliometric methodology presented here provides a general overview of all scientific disciplines, with special attention to their interrelation. This work aims to establish a tentative typology of disiciplines and research areas according to their degree of interdisciplinarity. Interdisciplinarity is measured through a series of indicators based on Institute for Scientific Information (ISI) multi-assignation of journals in subject categories. Research areas and categories are described according to the quantity of their links (number of related categories) and their quality (with close or distant categories, diversity, and strength of links). High levels of interrelations between categories are observed. Four different types of categories are found through cluster analysis. This differentiates "big" interdisciplinarity, which links distant categories, from "small" interdisciplinarity, in which close categories are related. The location of specific categories in the clusters is discussed.
The Advanced Interactive Debugging System (AIDS)
Authors: Jolene J. Hart
Venue: ACM SIGPLAN Notices (1979)

The Advanced Interactive Debugging System (AIDS) is described. It is a powerful high-level symbolic interactive debugging aid. AIDS is intended to be available in a program's environment without requiring debugging statements in the program's source code or inclusion of AIDS in the program's executable module.
Mapping Cityscapes to Cyber Space
Authors: Jiang Yu Zheng, Min Shi
Venue: Proceedings of the 2003 International Conference on Cyberworlds (2003)

This work establishes a cyber space of an urban area forvisiting on the Internet. By registering entire scenes alongevery street and scenes at many locations, people canvisually travel from street to street, and reach theirdestinations in cyber city. The issues we discuss here arehow to map a large scale area to image domain in a smallamount of data, how to cover visual information as completeas possible in the mapping, and how to effectively displaythe captured scenes for various activities in cyber city.Route Panoramas captured along streets and PanoramicViews captured at widely open sites are associated to citymaps to provide a navigation function. This paper focuseson the properties of our extended images - routepanorama, the archiving process applied to an urban area,and a real environment we developed to transmit anddisplay scenes on the WWW and portable devices. Thecreated cyber spaces of real cities have broad applicationssuch as city tour, real estate, E-commerce, heritagepreservation, urban planning and construction.
Proceedings of the second symposium on Operating systems principles
Venue: ACM Symposium on Operating Systems Principles (1969)

Being busy builders, many who research operating system design principles are given little opportunity to write down their results and experience, or to meet and discuss them. Thus the unusual success of the first Symposium on Operating Systems Principles at Gatlinburg, Tennessee, in October, 1967. Thus, we hope, the success of this, the second symposium.These Proceedings constitute the permanent record of the Second Symposium on Operating Systems Principles. The papers cover a wide range of topics, including general design principles, new ideas and new approaches to old ideas, and performance evaluation.
Feature Extraction Based on ICA for Binary Classification Problems
Authors: Nojun Kwak, Chong-Ho Choi
Venue: IEEE Transactions on Knowledge and Data Engineering (2003)

In manipulating data such as in supervised learning, we often extract new features from the original features for the purpose of reducing the dimensions of feature space and achieving better performance. In this paper, we show how standard algorithms for independent component analysis (ICA) can be appended with binary class labels to produce a number of features that do not carry information about the class labels¿these features will be discarded¿and a number of features that do. We also provide a local stability analysis of the proposed algorithm. The advantage is that general ICA algorithms become available to a task of feature extraction for classification problems by maximizing the joint mutual information between class labels and new features, although only for two-class problems. Using the new features, we can greatly reduce the dimension of feature space without degrading the performance of classifying systems.
Explaining default intuitions using maximum entropy
Authors: Rachel A. Bourne
Venue: Journal of Applied Logic (2003)

While research into default reasoning is extensive and many default intuitions are commonly held, no one system has yet captured all these intuitions nor given a formal account to motivate them. This paper argues that the extended maximum entropy approach which incorporates variable strength defaults provides a benchmark for default reasoning that is not only objectively motivated but also satisfies all the accepted default intuitions. It is shown that the behaviour of the approach coincides with a wide range of default intuitions taken from examples in the literature, and can be used to explain why some examples have led to confusion. Moreover, analysing the solutions produced by the maximum entropy approach enables clearer differentiation between the default knowledge they contain and the default inferences required of the reasoning system. This suggests that the maximum entropy approach can be used as a benchmark both for eliciting default knowledge when building a knowledge base and, by comparison, for clarifying the underlying biases of other default reasoning systems.
An algebraic perspective on homogeneous cone programming, and the primal-dual second-order cone approximations algorithm for symmetric cone programming
Authors: James Renegar
Venue:  (2003)

This dissertation presents new results for two classes of convex optimization problems&mdash;homogeneous cone programming and symmetric cone programming. We explore the T-algebraic structure of homogeneous cones. Using T-algebras, a class of non-associative algebras discovered by Vinberg in the early 1960's, we show that every homogeneous cone is linearly isomorphic to a &ldquo;slice&rdquo; of a positive definite cone. We further derive a family of logarithmically homogenous self-concordant barriers for each homogeneous cone, and provide an alternative proof that the universal barriers of homogeneous cones are logarithmically homogeneous self-concordant barriers. We present the new concept of second-order cone approximations for convex conic programming. Given any open convex cone K, a logarithmically homogeneous self-concordant barrier for K and any positive real number r < 1, we associate, with each direction x &isin; K, a second-order cone K&circ; r(x) containing K. We show that K is the interior of the intersection of the second-order cones K&circ;r(x), as x ranges over all directions in K. Using these second-order cones as approximations to positive definite cones, we develop a new polynomial-time primal-dual interior-point algorithm for semi-definite programming. This algorithm is further extended to symmetric cone programming via the relation between symmetric cones and Euclidean Jordan algebras.
A Modified Iterative Refinement Scheme
Authors: Achiya Dax
Venue: SIAM Journal on Scientific Computing (2003)

In this paper we present, analyze, and test a modified iterative refinement scheme. The modified scheme differs in one detail: The updating of the residual vector. This apparently small modification causes a substantial change in the numerical behavior of the algorithm. In particular, when solving nearly consistent least squares problems of the form the computed residual has a smaller component in Range(A). Numerical experiments illustrate the changes in the behavior of the algorithm.
Stateful distributed interposition
Authors: John Reumann, Kang G. Shin
Venue: ACM Transactions on Computer Systems (TOCS) (2004)

Interposition-based system enhancements for multitiered servers are difficult to build because important system context is typically lost at application and machine boundaries. For example, resource quotas and user identities do not propagate easily between cooperating services that execute on different hosts or that communicate with each other via intermediary services. Application-transparent system enhancement is difficult to achieve when such context information is obscured by complex service interaction patterns. We propose a basic mechanism for sharing contextual information across the tiers of multitier computations to support system enhancement for multitier servers and applications.This article introduces generic, cluster-wide context as a new, configurable abstraction for the OS. System administrator- or application-specified context tracking rules determine how context is associated with system processes, sockets, messages, how it is relayed along the interapplication communication channels, and how it is to be interpreted by system interpositions, thus realizing Stateful Distributed Interposition.
The Chromatic Number of Graph Powers
Authors: Noga Alon, Bojan Mohar
Venue: Combinatorics, Probability and Computing (2002)

It is shown that the maximum possible chromatic number of the square of a graph with maximum degree d and girth g is (1 +o(1))d2 if g = 3, 4, 5 or 6, and is &Theta;(d2 &#x002F; log d) if g &ge; 7. Extensions to higher powers are considered as well.
Investigating students' learning of kinematics with web-based laboratory activities using computer simulations
Authors: Ruth Howes
Venue:  (2003)

This study investigated the differences in students' learning of kinematics when using computer-simulated experiments as compared to using traditional hands-on laboratory experiments. Computer-simulated experiments were done either in the lab or via the Web. It was hypothesized that using computer-simulated experiments was no different from using traditional hands-on experiments in improving students' understanding of kinematics. Students used computer-simulated experiments developed for this study to work similar tasks to those in traditional hands-on kinematics laboratories. Three groups with a total of 92 subjects were randomly assigned to three kinematics laboratory formats: traditional hands-on laboratory experiments, in-laboratory computer-simulated experiments, and Web-based simulated experiments. An instrument was developed to measure students' skills in interpreting kinematics graphs. A pretest-posttest control group design with a delayed posttest added was utilized. Think-aloud interviews and a student survey were conducted to collect further evidence about students' use of simulations and attitudes toward computer-simulated experiments. Computer-simulated experiments were found to have a positive effect on students' understanding of kinematics. No significant difference was found in kinematics test scores between the groups who used the computer-simulated experiments and the one who used traditional hands-on experiments. No difference was found between students who worked computer-simulated experiments in the laboratory and those who worked them via the Web. A significant difference between males and females was found before and after treatments. Differences in preparation and learning styles might be used to explain gender effect; however, further studies are recommended. Some students' difficulties in kinematics graphs were found to be alleviated when using simulations. Real-time graphing of computer-simulated motions was found to improve students' ability to connect graphs to verbal descriptions. Simulations that display changes in different types of kinematics graphs simultaneously in the same screen were found to help students make connections between these graphs. Students liked working with computer-simulated experiments but they preferred doing them in the laboratory rather than online. Getting immediate help seemed to be the reason for their preference. Students reported that Web-based labs were more convenient; however, many students did not like working without partners or an instructor available.
The Impact of Organizational Characteristics on Telehealth Adoption by Hospitals
Authors: Marie-Pierre Gagnon, Lise Lamothe, Jean-Paul Fortin, Alain Cloutier, Gaston Godin, Camille Gagné, Daniel Reinharz
Venue: Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 6 - Volume 6 (2004)

Human and organizational factors are central to the adoption of various telehealth technologies and influence their diffusion into integrated networks. The aim of this paper is twofold. Firstly, a conceptual framework for assessing organizational factors that condition telehealth adoption by hospitals is proposed. Secondly, the results of an exploratory study conducted among the 32 hospitals involved in the Provincial Extended Telehealth Network ofQuebec (Canada) are presented and discussed. Relevant concepts from different theoreticalframeworks were combined to propose a comprehensive framework of potential factors affecting telehealth adoption by hospitals. A questionnaire was administered via telephoneinterviews to the DSP (Director of Medicine) of each of the 32 hospitals. Level of telehealth adoption was assessed by computing the number of transmissions performed since the hospital's adhesion to the network. Then, contingency analyses were performed to determine which organizational factors were significantly associated with telehealth adoption. Finally, the paper discusses some of the implications pertaining to the organizational dimensions affectingtelehealth adoption by hospitals and proposes avenues to facilitate the diffusion of this technology.
MUSE studio lab and innovative software engineering capstone project experience
Authors: Sita Ramakrishan
Venue: ACM SIGCSE Bulletin (2003)

This paper presents our rationale in setting up an innovative studio lab called the MUSE (Monash University Software Engineering) Studio Lab for our final year undergraduate Software Engineering students in 2002, an evaluation of the outcomes for 2002 and plans for 2003 and beyond. We describe the Monash University Software Engineering (MUSE) Strategy to make the MUSE culture and MUSE agile process branding visible through the MUSE Studio Lab for the learners, academics, management and the outside world of academia and industry. This strategy is aimed at supporting a continuum of learning styles in three units in the final year of our Bachelor of Software Engineering Program. The teaching/learning model used is a predominantly constructivist/student-centered/active learning approach for the Capstone SE project (Studio unit), and a constructivist approach for the Honours Research thesis unit. A more traditional teaching approach is used for the Systems Validation, Verification, Quality & Standards unit based on traditional instructional design model which is objectivist in view of learning. We also provide details of the the middle weight process that student groups follow in their full year SE Capstone project. At MUSE Studio, we have fused pedagogy with technology.
Network Awareness for Wireless Peer-to-Peer Collaborative Environments
Authors: Alex Bordetsky, Susan G. Hutchins, William G. Kemple, Eugene Bourakov
Venue: Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 3 - Volume 3 (2004)

The implications of using mobile wireless communications are significant for emerging peer-to-peer (P2P) collaborative environments. From a networking perspective, the use of wireless technologies to support collaboration may impact bandwidth and spectrum utilization. This paper explores the effects of providing feedback to system users regarding wireless P2P network behavior on the performance of collaboration support applications. We refer to this operational feedback as "network awareness." The underlying premise is that providing feedback on the status of the network will enable users to self-organize their behavior to maintain quality of data sharing. Results achieved during an experiment conducted at the Naval Postgraduate School demonstrate significant effects of roaming on application sharing performance and integration with client-server applications. A solution for improving network aware P2P collaboration, identified in the experiment, is discussed.