ppxscal/embedding_network huggingface dataset:
Towards Multi-View Object Class Detection
Authors: Alexander Thomas, Vittorio Ferrar, Bastian Leibe, Tinne Tuytelaars, Bernt Schiel, Luc Van Gool
Venue: Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 2 (2006)

We present a novel system for generic object class detection. In contrast to most existing systems which focus on a single viewpoint or aspect, our approach can detect object instances from arbitrary viewpoints. This is achieved by combining the Implicit Shape Model for object class detection proposed by Leibe and Schiele with the multi-view specific object recognition system of Ferrari et al. After learning single-view codebooks, these are interconnected by so-called activation links, obtained through multi-view region tracks across different training views of individual object instances. During recognition, these integrated codebooks work together to determine the location and pose of the object. Experimental results demonstrate the viability of the approach and compare it to a bank of independent single-view detectors
Modelling denial of service attacks on JFK with Meadows's cost-based framework
Authors: J. Smith, J. M. González-Nieto, C. Boyd
Venue: Proceedings of the 2006 Australasian workshops on Grid computing and e-research - Volume 54 (2006)

We present the first detailed application of Meadows's cost-based modelling framework to the analysis of JFK, an Internet key agreement protocol. The analysis identifies two denial of service attacks against the protocol that are possible when an attacker is willing to reveal the source IP address. The first attack was identified through direct application of a cost-based modelling framework, while the second was only identified after considering coordinated attackers. Finally, we demonstrate how the inclusion of client puzzles in the protocol can improve denial of service resistance against both identified attacks.
Explaining qualifications in audit reports using a support vector machine methodology: Research Articles
Authors: Michael Doumpos, Chrysovalantis Gaganis, Fotios Pasiouras
Venue: International Journal of Intelligent Systems in Accounting and Finance Management (2005)

The verification of whether the financial statements of a firm represent its actual position is of major importance for auditors, who should provide a qualified report if they conclude that the financial statements fail to meet this requirement. This paper implements support vector machines (SVMs) to develop models that may support auditors in this task. Linear and non-linear models are developed and their performance is analysed using training samples of different size and out-of-sample&#x002F;out-of-time data. The results show that all SVM models are capable of distinguishing between qualified and unqualified financial statements with satisfactory accuracy. The performance of the models over time is also explored. Copyright &copy; 2005 John Wiley & Sons, Ltd.
An ontology of social control tools
Authors: Philippe Pasquier, Roberto A. Flores, Brahim Chaib-draa
Venue: Proceedings of the fifth international joint conference on Autonomous agents and multiagent systems (2006)

In multi-agent systems, social commitments are increasingly used to capture roles, social norms, the semantics of agent communication as well as other inter-agent dependencies. Those systems rest on the assumption that agents respect their commitments. In this paper, we present an ontology of sanctions and punishment philosophies which are required ingredients of any social control mechanism susceptible to fosters agents' compliance with the commitments they create.
Performance scalability in multiprocessor systems with resource contention
Authors: S. Majumdar
Venue: Proceedings of the 2000 IEEE International Symposium on Performance Analysis of Systems and Software (2000)

Multiple processes may contend for shared resources such as variables stored in the shared memory of a multiprocessor system. Mechanisms required to preserve data consistency on such systems often lead do a decrease in system performance. This research focuses on controlling shared resource contention for achieving high capacity and scalability in multiprocessor based applications that include telephone switches and real time databases. Both reengineering of existing code as well as appropriate scheduling of the processes are two viable methods for controlling memory contention. Emphasis is placed on the second approach. Based on analytic models, three different scheduling approaches are compared. The numerical results obtained from the model provide insights into system behavior and highlight the important attributes of each strategy. A hybrid approach that combines the good attributes of a number of these strategies is proposed and analyzed. The results of this research are useful mainly to designers of software for multiprocessor based telecommunication and other embedded systems.
An inside analysis of a genetic-programming based optimizer
Authors: Victor Muntes-Mulero, Calisto Zuzarte, Volker Markl
Venue: Proceedings of the 10th International Database Engineering and Applications Symposium (2006)

The use of evolutionary algorithms has been proposed as a powerful random search strategy to solve the join order problem. Specifically, genetic programming used in query optimization has been proposed as an alternative to the limitations of dynamic programming with large join queries. However, very little is known about the impact and behavior of the genetic operations used in this type of algorithms. In this paper, we present an analysis that helps us to understand the effect of these operations during the optimization execution. Specifically, we study five different aspects: the age of the members in the population in terms of generations, the number of query execution plans (QEP) discarded without producing new offsprings, the average QEP life time in generations, the efficiency of the genetic operations and the evolution of the best cost. All in all, our analysis allows us to understand the impact of crossovers compared to mutation operations and the dynamically changing effects of these operations.
Rethinking Life-long Learning: The Empirical Modelling Approach
Authors: Meurig Beyn, Antony Harfield
Venue: Proceedings of the Sixth IEEE International Conference on Advanced Learning Technologies (2006)

Educational technology is seen as key for life-long learning, but it has yet to live up to expectation. We argue that current learning environments are typically oriented too much towards structured learning to meet the needs of the life-long learner. Environments for life-long learning demand a higher degree of autonomy for the learner, must be open to eclectic sources, support soft informal learning activity, and accommodate evolution both in the experience of the learner and in the context in which this occurs. We propose sense-making through the construction of suitable interactive artefacts as a core activity for lifelong learning, and briefly discuss and illustrate how this can be supported using Empirical Modelling.
Assessing the Relationship between Software Assertions and Faults: An Empirical Investigation
Authors: Gunnar Kudrjavets, Nachiappan Nagappan, Thomas Ball
Venue: Proceedings of the 17th International Symposium on Software Reliability Engineering (2006)

The use of assertions in software development is thought to help produce quality software. Unfortunately, there is scant empirical evidence in commercial software systems for this argument to date. This paper presents an empirical case study of two commercial software components at Microsoft Corporation. The developers of these components systematically employed assertions, which allowed us to investigate the relationship between software assertions and code quality. We also compare the efficacy of assertions against that of popular bug finding techniques like source code static analysis tools. We observe from our case study that with an increase in the assertion density in a file there is a statistically significant decrease in fault density. Further, the usage of software assertions in these components found a large percentage of the faults in the bug database.
A Hardware IP-Core for Information Retrieval
Authors: Michael Freeman, Thimal Jayasooriya
Venue: Proceedings of the 9th EUROMICRO Conference on Digital System Design (2006)

With the ever increasing amounts of information stored on the web or archived within computing systems, high performance data processing architectures are required to process this data in real time. The aim of the work presented in this paper is the development of a hardware text mining IP-Core for use in FPGA based systems. In this paper we will describe the development of our text processing hardware pipeline, with the addition of a complex word stemming and loadable stop list stages. The performance of this system is then compared to our initial prototype and an equivalent software implementation using the Lucene software library.
An effective burstiness estimation model for VBR video stream
Authors: Hongliang Li, Guizhong Liu, Yonhli Li, Zhongwei Zhang
Venue: Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1 (2003)

Burstiness property plays an important role in the variable bit rate (VBR) video traffic. One of the most significant issues in providing quality-of-service (QoS) guarantees for the real-time multimedia communications in a high-speed network is to estimate the burstiness accurately. In this paper, an efficient burstiness estimation model (fractal exponent model) for VBR video stream is proposed. In order to improve the accuracy of the burstiness measure, a new operator is firstly introduced, which is similar to the convolution operator. Then, using burstiness index derived from the fractal exponent function, we can estimate the burstiness characteristics of VBR video correctly. Simulation results using 20 VBR MPEG video traces indicate good performance of the proposed algorithm with significantly improved burstiness estimation accuracy.
An analysis: traditional semiconductor lithography versus emerging technology (nano imprint)
Authors: Walt Trybula, Robert L. Wright, Kranthi Mitra Adusumilli, Randy K. Goodall
Venue: Proceedings of the 37th conference on Winter simulation (2005)

The introduction of emerging technologies into existing manufacturing facilities is not necessarily encouraged by the people responsible for the output of the facilities. Any "new" technology carries risks and people responsible for delivering manufactured products are, by nature, risk-adverse. This paper demonstrates the advantage of evaluating the impact of attempting to introduce a new technology into an existing facility before actually attempting the introduction. The first part of the analysis examines the impact on the total product delivery for a comparable volume of two facilities, one with the traditional processes and one with the new process replacing existing ones. Based on these results, a conclusion can be reached if there are sufficient benefits to consider pursuing the development and introduction of the new techniques. An example is employed that evaluates the introduction of nano-imprint.
MaxwellWorld: learning complex scientific concepts via immersion in virtual reality
Authors: Chris Dede, Marilyn C. Salzman, R. Bowen Loftin
Venue: Proceedings of the 1996 international conference on Learning sciences (1996)

Subjects such as electrostatics are difficult to teach in part because learners cannot draw analogies to personal experiences that provide metaphors. MaxwellWorld has been designed to allow students to explore electrostatic forces and fields, learn about the concept of electric potential, and "discover" the nature of electric flux. In formative assessments of MaxwellWorld's usability and learnability, students enjoyed learning about electric fields and cited the 3-D representations, the interactivity, the ability to navigate to multiple perspectives, and the use of color as characteristics that were important to their learning experience. Pre- and post-lesson evaluations show that students had a greater understanding of the distribution of forces in an electric field, as well as representations such as test charge traces and field lines. Our studies also indicate that the three-dimensional nature of VR aids with learning and that the virtual reality experience is more motivating for students than a comparable 2-D microworld.
Open Source and Professional Advancement
Authors: Diomidis Spinellis
Venue: IEEE Software (2006)

Open source software development efforts offer us professionals a new and valuable way to obtain significant experience in a wide range of areas as an alternative to existing certification schemes. Participation in open source projects can make us better programmers by exposing us to maintenance, new technologies, and different application domains, and make us better system administrators by forcing us to tinker with complex system setups. We can also improve our management skills as we observe and later improve the process of large, complex projects. In the end, the experience we gain from open source development can also be rewarded in the marketplace through better employment opportunities.
Multimedia Surveillance and Monitoring
Authors: Mohan S. Kankanhalli
Venue: Proceedings of the IEEE International Conference on Video and Signal Based Surveillance (2006)

In spite of the development of various media sensors, multimedia (and computer vision) researchers have mostly adopted a video-centric approach to solve the automated surveillance and monitoring related problems. We look at the monitoring/surveillance problem from an information-centric perspective and advocate the use of diverse sources of information which enables the use of multiple correlated media. We advocate a design methodology for building systems which can explicitly take performance into account. We then propose that the surveillance problem can be better posed as an "information-search" problem in which the user can query for the information of his/her interest. We will present a framework for multimedia monitoring that uses a domain-data transformation model based approach to map domain-events to their equivalent data-events. We will motivate the new approach, present the architecture and highlight the information assimilation aspects. We will also present some open problems and issues arising from the novel way of looking at monitoring.
Using Augmented Reality for Multidimensional Data Visualization
Authors: Bianchi Serique Meiguins, Ricardo Melo Casseb do Carmo, Aruanda Simoes Goncalves, Paulo Igor Alves Godinho, Marcelo de Brito Garcia
Venue: Proceedings of the conference on Information Visualization (2006)

This paper presents a prototype for information visualization in an Augmented Reality environment. The prototype allows users to perform common tasks in desktop information visualization tools, such as data dynamic filters, attribute selection, semantic zoom and details on demand. Such tasks are seldom available in AR environments. We used a customized version of ARToolKit, a software tool that allows the insertion of virtual objects in real environments through cards with marks. The interactive controls as well as the data visualization are projected to the user and manipulated through these cards.
Ultra wide band WLANs: a self-configuring resource control scheme for accessing UWB hot-spots with QoS guarantees
Authors: Francesca Cuomo, Cristina Martello
Venue: Mobile Networks and Applications (2005)

In the framework of wireless access networks the Hot-Spot concept is attracting several operators. In a Hot-Spot near stationary terminals may reach one or more Radio Access Points (RAP) offering wireless access to the fixed network. Mobile terminals should be able to register to the network, associate to a RAP and activate a wireless communication supporting given bit rates and Quality of Service (QoS) features. Several mobile users, requiring different services, enter and exit the Hot-Spot. In this scenario network operators should have the opportunity to configure quickly radio resources to serve the mobile terminals and to handle efficiently the network resources in order to maximize the income. Among the different technologies emerging in this field, we investigate the feasibility of a wireless access based on Ultra Wide Band (UWB) radio, combined with a flexible admission control scheme based on transmission power selection. We employ UWB in unlicensed mode, i.e., we operate in accordance to the limits imposed by the regulatory bodies (e.g., US Federal Communications Commission). The flexibility of the admission control depends mainly on the capability of a mobile terminal of "measuring" the environment it is entering and thus supporting the RAP in the selection of the appropriate transmission parameters. The proposed approach provides an admission policy based on the Maximum Extra Interference (MEI) and selects the power level through a simple interaction among the involved mobile terminals. The information for basing the decision on is collected through measurements and signaling. In order to increase the system efficiency, transmission parameters are selected in accordance to a "balancing" criterion (thus Balanced-MEI, B-MEI). The B-MEI approach keeps quite simple the admission of new mobile terminals in a RAP's area but contemporarily satisfies the trade-off between fair resource assignment and system efficiency. This is a key trade-off in wireless access systems where interference effects determine the upper limit of the number of users that can be admitted in the network.
Proceedings of the 8th workshop on Multimedia and security
Venue: International Multimedia Conference (2006)

On behalf of the Organizing Committee, it is our pleasure to present the 2006 ACM Multimedia and Security Workshop - ACM'2006. This is the 8th ACM Multimedia and Security Workshop sponsored by the ACM Society. ACM'2006 is held in Geneva, Switzerland at the University of Geneva. This magnificent location, a peaceful green landscape with views of the Alps and the lake, provides the ideal setting and atmosphere to hold a workshop. All technical activities take place at newly constructed building UniMail at the first floor. The ACM'2006 Workshop Banquet is hosted on the steamboat on the Geneva Lake. This should be an enjoyable evening, starting with a reception, followed by dinner and nice discussions.The Program Co-Chairs, Professors Jessica Fridrich and Jana Dittmann have put together a truly excellent program. This year we have 8 sessions and 1 plenary talk. The plenary speaker, Prof. Mauro Barni, is one of pioneers in the field of digital watermarking and data hiding. His talk addresses the processing of encrypted signals as a new frontier for multimedia security. The program containing 13 long papers and 19 short papers from Europe, the United States and Asia was selected out of 60 submissions. The main focus of this workshop is dedicated to the various aspects of multimedia security and more precisely to main open issues in the theoretical definition and practical validation of watermarking and data hiding security. Overall, the review process produced an excellent technical program, for which we thank the Technical Program Committee, the Organizing Committee, and all researchers who participated in submissions.
Estimation of nonstationary AR model using the weighted recursive least square algorithm
Authors: M. M. Milosavljevic, M. D. Veinovic, B. D. Kovacevic
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1995. on International Conference - Volume 02 (1995)

A new method of estimating time-varying AR models using weighted recursive least square algorithm with a variable forgetting factor is described. The variable forgetting factor is adapted to a nonstationary signal by a generalized likelihood ratio algorithm through the so-called discrimination function which gives a good measure of nonstationarity. In this way we connect the results from the areas of nonstationary signal estimation and jump detection, and obtain an algorithm which exhibits a good tracking performance together with a high parameter estimation accuracy. The feasibility of the approach is demonstrated with both simulation data and real speech signals.
A pair of forbidden subgraphs and perfect matchings
Authors: Shinya Fujita, Ken-ichi Kawarabayashi, Claudio Leonardo Lucchesi, Katsuhiro Ota, Michael D. Plummer, Akira Saito
Venue: Journal of Combinatorial Theory Series B (2006)

In this paper, we study the relationship between forbidden subgraphs and the existence of a matching. Let H be a set of connected graphs, each of which has three or more vertices. A graph G is said to be H-free if no graph in H is an induced subgraph of G. We completely characterize the set H such that every connected H-free graph of sufficiently large even order has a perfect matching in the following cases.(1) Every graph in H is triangle-free. (2) H consists of two graphs (i.e. a pair of forbidden subgraphs).A matching M in a graph of odd order is said to be a near-perfect matching if every vertex of G but one is incident with an edge of M. We also characterize H such that every H-free graph of sufficiently large odd order has a near-perfect matching in the above cases.
Playing with maps Explore, discover, learn, categorize, model, analyse, explain, present geographic and non-geographic data
Authors: Menno-Jan Kraak
Venue: Proceedings of the conference on Information Visualization (2006)

Maps are especially known for their capability to provide insight in geographic patterns and trends. Maps do this well because they only present a selection of the complex reality and visualize it in an abstract way. But today they have many more roles to play. They should also be seen as flexible interface to geospatial data, since they offer interaction with the data behind the visual representation and additionally maps are instruments that encourage exploration. As such they are used to stimulate (visual) thinking about geospatial patterns, relationships, and trends. The context where maps like this operate is the world of Geovisualization which can be described as a loosely bounded domain that addresses the visual exploration, analysis, synthesis and presentation of geospatial data by integrating approaches from disciplines including cartography with those from scientific visualization, image analysis, information visualization, exploratory data analysis, visual analytics, and GIScience. Contact with all those disciplines has enriched the world of maps but have also stimulated others to use the map (metaphor) to visualize nongeographic data. The discussion will illustrated the new and exiting role maps can play to visualize geographic and non-geographic data in combination with other visual means