ppxscal/embedding_network huggingface dataset:
Behavior-Based Control Hierarchy of Unmanned Aerial Vehicle Swarming
Authors: Thierry Pamphile, Kuo-Chi Lin
Venue: Proceedings of the International Symposium on Collaborative Technologies and Systems (2006)

Although there are many advantages associated with UAVs, the production cost as well as operation cost of one of today's military UAV's is an overwhelming problem. In this paper, a more basic and fundamental approach to controlling a mission of UAVs is proposed. Based on a combination of low-level behaviors, a swarming hierarchy is derived from three levels of behaviors: basic, individual and group. The proposed hierarchy enables multiple UAVs to successfully conduct a mission using a condition-based switching mechanism and relying on local interactions between each other and with minimal interactions with human controllers who only intervene when coordinating the mission-level actions [1]. From an analytical model of a point mass UAV in a 2D environment where mass, air drag force, initial speed and gravitational acceleration are constant and the only controls for the UAV are the thrust force and its banking angle, several behavior combinations are simulated in order to obtain a family of feasible solutions. The results achieved suggest that the above mentioned condition-based switching mechanism can be used and eventually applied to actual UAVs.
Mobile agent communication scheme
Authors: Maamoun Bernich, Fabrice Mourlin
Venue: Proceedings of the International Conference on Systems and Networks Communication (2006)

This paper presents a communication scheme for flexible and adaptive mobile agent system (or community of agent). The scheme associates each mobile agent with a set of roles, each of them belong to a communication layer. This allows the decoupling between the roles and physical locations or responsibilities of the mobile agents. Thus, the messages are typed by the layer that supports them. By separating the concerns of locating the mobile agent and delivering the message to the agent, we create a flexible protocol of data exchange.
Work-efficient BSR-based parallel algorithms for some fundamental problems in graph theory
Authors: Jean-Frédéric Myoupo, David Semé
Venue: The Journal of Supercomputing (2006)

This paper presents BSR-parallel algorithms for some problems in fundamental graph theory : transitive closure, connected components, spanning tree, bridges and articulation points of a graph and bipartite graph recognition. There already exist constant time algorithms to solve these problems on a mesh with reconfigurable bus system using O(N 4) processors. Here we show that these problems can be solved in constant time using only O(N 2) processors on the BSR model (N is the number of vertices of the graph G). Therefore, our algorithms are more work-efficient. These new results suggest that many other problems in graph theory can be solved in constant time using the BSR model.
Colour harmonization in car manufacturing processes: Research Articles
Authors: A. Andriyashin, M. Benko, W. Härdle, R. Timofeev, U. Ziegenhagen
Venue: Applied Stochastic Models in Business and Industry (2006)

One of the major cost factors in car manufacturing is the painting of the body and other parts such as the wing or bonnet. Surprisingly, the painting may be even more expensive than the body itself. From this point of view it is clear that car manufacturers need to observe the painting process carefully to avoid any deviations from the desired result. Especially for metallic colours where the shining is based on microscopic aluminium particles, customers tend to be very sensitive towards a difference in the light reflection of different parts of the car.The following study, carried out in close co-operation with a partner from car industry, combines classical tests and non-parametric smoothing techniques to detect trends in the process of car painting. The localized versions motivated by t-test, Mann&ndash;Kendall, Cox&ndash;Stuart and a change point test are employed in this study. Suitable parameter settings and the properties of the proposed tests are studied by simulations based on resampling methods borrowed from non-parametric smoothing.The aim of the analysis is to find a reliable technical solution which avoids any interaction from the human side. Copyright &copy; 2006 John Wiley & Sons, Ltd.
Horror film genre typing and scene labeling via audio analysis
Authors: S. Moncrieff, S. Venkatesh, C. Dorai
Venue: Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1 (2003)

We examine localised sound energy patterns, or events, that we associate with high level affect experienced with films. The study of sound energy events in conjunction with their intended affect enable the analysis of film at a higher conceptual level, such as genre. The various affect/emotional responses we investigate in this paper are brought about by well established patterns of sound energy dynamics employed in audio tracks of horror films. This allows the examination of the thematic content of the films in relation to horror elements. We analyse the frequency of sound energy and affect events at a film level as well as at a scene level, and propose measures indicative of the film genre and scene content. Using 4 horror, and 2 non-horror movies as experimental data we establish a correlation between the sound energy event types and horrific thematic content within film, thus enabling an automated mechanism for genre typing and scene content labeling in film.
Supporting Speech as Modality for Annotation and Asynchronous Discussion of Recorded Lectures
Authors: Tobias Lauer, Sandra Busl
Venue: Proceedings of the Eighth IEEE International Symposium on Multimedia (2006)

Collaborative learning with recorded lectures can be supported by allowing users to anchor notes in the documents and exchange them with others. While the traditional modality for annotation and discussion is text, there are a number of reasons in favor of supporting other modalities as well. We present an extension of a lecture-on-demand annotation and discussion system that allows learners to use spoken notes. Our main focus is on the development of a suitable user interface that facilitates the retrieval of speech data employing signal-processing algorithms while at the same time being simple and easy to use.
Improvement of convergence speed for subband adaptive digital filters using the multirate repeating method
Authors: K. Ashihara, K. Nishikawa, H. Kiya
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1995. on International Conference - Volume 02 (1995)

We propose a method for achieving both a fast convergence speed and the low orders of adaptive digital filters (ADFs) for subband ADFs. The proposed method is based on the multirate repeating method which uses wasted signals by downsampling. First we show how to apply the multirate repeating method to the standard structure of subband ADFs. Next we consider a new structure of subband ADFs for extending the multirate repeating method. Finally, we show the validity of the proposed method by computer simulations.
Graph-Based Abstraction for Privacy Preserving Manifold Visualization
Authors: Xiaofeng Zhang, William K. Cheung, C. H. Li
Venue: Proceedings of the 2006 IEEE/WIC/ACM international conference on Web Intelligence and Intelligent Agent Technology (2006)

With the next-generation Web aiming to further facilitate data/information sharing and aggregation, providing data privacy protection support in an open networked environments becomes increasingly important. Learning-fromabstraction is a recently proposed distributed data mining approach which first abstracts data at local sources using the agglomerative hierarchical clustering (AGH) algorithm and then aggregates the abstractions (instead of the data) for global analysis. In this paper, we explain the limitation of the use of AGH for local manifold preserving data abstraction and propose the use of the graph-based clustering approach (e.g., the minimum cut) for local data abstraction. The effectiveness of the proposed abstraction approach was evaluated using benchmarking datasets with promising results. The global analysis results obtained based on the minimum cut abstraction was found to outperform those based on the AGH abstraction, especially when the underlying manifold was complex.
Learning as perspective taking: conceptual alignment in the classroom
Authors: James G. Greeno, Brian MacWhinney
Venue: Proceedings of the 7th international conference on Learning sciences (2006)

This poster presents an extension of the psycholinguistic theory of perspective taking to the analysis of reasoning and problem solving in discursive interaction. This extension amends and generalizes schema theory. We present illustrations of perspectival alignments achieved when constructing causal explanations or solving problems, including ways that perspectives shifted during the interactions. We hypothesize that successful learning arises in classrooms when students realign their perspectives with new models.
Measurements and Improvements of Conducted Electromagnetic Interference Emission Caused by the Switching Circuit
Authors: Yuh-Yih Lu, Zhi-Hua Chen, Chung-Hsiung Yeh, Hsiang-Cheh Huang
Venue: Proceedings of the First International Conference on Innovative Computing, Information and Control - Volume 1 (2006)

In general, the conducted electromagnetic interference (EMI) emission exists in most of the electronic products and affects the electromagnetic environments. In this paper, we design a switching circuit to observe and improve the conducted EMI emission. We also discuss the conducted EMI effects with putting RC snubber or diode into the switching circuit. It is found that the switching circuits with RC snubber or diode can reduce the conducted EMI effect and accord with the limitations of FCC Part 15 Class B and EN 55011 Class B.
Contract in electronic commerce
Authors: Mohamed G. Gouda
Venue:  (2005)

Commerce is the exchange of goods, services and financial instruments conducted by procedures which define a set of properties sufficient to insure valid and effective transactions. Electronic commerce is commerce conducted using computer network protocols as the communication medium. If these network protocols have the same properties as the procedures used for non-electronic commerce, then electronic commerce will support equally valid and effective transactions. Forum is a system for electronic commerce designed for general forms of commerce rather than specific transaction types. It includes protocols which support the contractual and structural properties of non-electronic commerce, as well as the security properties necessitated by both the value of the exchanged items and the additional risks of the communication medium.
Finding Crucial Subproblems to Focus Global Search
Authors: Susan L. Epstein, Richard J. Wallace
Venue: Proceedings of the 18th IEEE International Conference on Tools with Artificial Intelligence (2006)

Traditional global search heuristics to solve constraint satisfaction problems focus on properties of an individual variable that mandate early search attention. If, however, one could predict crucial subproblems (the portions of a constraint satisfaction problem likely to cause each other particular difficulty) in advance, search could address them first. This paper postulates several types of crucial subproblems, and shows how local search can be harnessed to identify them before global search for a solution. A variety of heuristics and metrics are then used to guide traditional constraint heuristics with those crucial subproblems. On certain classes of structured problems, such search outperforms traditional heuristics by at least an order of magnitude in both time and space.
Maximizing breaks and bounding solutions to the mirrored traveling tournament problem
Authors: Sebastián Urrutia, Celso C. Ribeiro
Venue: Discrete Applied Mathematics (2006)

We investigate the relation between two aspects of round robin tournament scheduling problems: breaks and distances. The distance minimization problem and the breaks maximization problem are equivalent when the distance between every pair of teams is equal to 1. We show how to construct schedules with a maximum number of breaks for some tournament types. The connection between breaks maximization and distance minimization is used to derive lower bounds to the mirrored traveling tournament problem and to prove the optimality of solutions found by a heuristic for the latter.
Experimental analysis of approximation algorithms for the vertex cover and set covering problems
Authors: Fernando C. Gomes, Cláudio N. Meneses, Panos M. Pardalos, Gerardo Valdisio R. Viana
Venue: Computers and Operations Research (2006)

Several approximation algorithms with proven performance guarantees have been proposed to find approximate solutions to classical combinatorial optimization problems. However, theoretical results may not reflect the experimental performance of the proposed algorithms. As a consequence, a question arises: how "far" from the theoretically proved performance are the experimental results? We conduct a controlled empirical study of approximation algorithms for the Vertex Cover and the Set Covering Problems. Many authors have proposed approximation algorithms for those problems. Our main goal is to better understand their strengths, weaknesses, and operation. Although we implement more than one algorithm to find feasible solutions to either problems, this work does not emphasize competition between them. The quality of the solutions related to the theoretical performance guarantees are analyzed instead. The computational experiments showed that the proven performance guarantees of all tested algorithms did not forecast well the empirical performance.
Why Applying Standards to Web Services Is Not Enough
Authors: John Viega, Jeremy Epstein
Venue: IEEE Security and Privacy (2006)

Properly designing and securing your Web services application is important, and it's not just a matter of using security standards. Developers must understand both the limitations and drawbacks to security standards in order to fully secure their Web services.
1/fα signal synthesis with precision control
Authors: Michel Guglielmi
Venue: Signal Processing (2006)

This paper deals with the synthesis of signals which have a power spectral density (PSD) equal to 1/fα. It is well known that a linear infinite line of RC cells can generate such signals. For a finite number of cells, the spectrum is not perfect. Here, we propose a novel method which enables the control of the precision within a frequency bandwidth. The algorithm proposed in the paper is based on a geometric approach. A cluster of elementary cells is designed. Each cell is defined by two parameters (the two cut off frequencies) which are easily computed through recursive formulae. The digital conversion requires the analog to digital open loop design method. Finally, sample paths are generated and their PSD compared to 1/fα
Automatic IP address configuration in VANETs
Authors: Maria Fazio, Claudio E. Palazzi, Shirshanka Das, Mario Gerla
Venue: Proceedings of the 3rd international workshop on Vehicular ad hoc networks (2006)

Cars' high mobility and density impede the direct utilization of traditional networking techniques and protocols in vehicular networks. In this context, automatic IP address configuration is a challenging and yet unexplored issue. We propose a novel scheme that exploits the topology of Vehicular Ad-hoc Networks (VANETs) and an enhanced Dynamic Host Configuration Protocol (DHCP) service with dynamically elected leaders to provide reliable and fast address configuration.
Priming of Color and Position during Visual Search in Unilateral Spatial Neglect
Authors: &AACUTE;rni Kristjánsson, Patrik Vuilleumier, Paresh Malhotra, Masud Husain, Jon Driver
Venue: Journal of Cognitive Neuroscience (2005)

We examined priming of visual search by repeated target location or color in two patients with left visual neglect and extinction, following strokes centered on the right inferior parietal lobe. Both patients, like the healthy controls we tested, showed intact priming, with performance speeded when either the location or color of a singleton target was repeated over successive trials in a standard search condition (Experiment 1). This was observed both from and to targets on the contralesional (left) side. Moreover, priming of search was still observed even when a return of fixation back to display-center was required between successive trials (Experiment 2). When briefer displays were used (Experiment 3), the patients often failed to detect left targets. This situation revealed an important dissociation: Whereas location priming only arose from preceding left targets that had been consciously detected, color priming (possibly arising within the intact ventral stream) did not depend on awareness of the preceding target. There was considerable color priming from missed targets. These findings demonstrate relatively intact priming of visual search by color and location in patients with right parietal damage, and also reveal that location priming may differ from color priming in requiring awareness.
A Classification of Disconnected Operation Techniques
Authors: Marija Mikic-Rakic, Nenad Medvidovic
Venue: Proceedings of the 32nd EUROMICRO Conference on Software Engineering and Advanced Applications (2006)

Distributed, decentralized, and mobile systems are highly dependent on the underlying network. Due to network failures, these systems must address the problem of disconnected operation, i.e., continued functioning in the (near) absence of network accessibility. A number of approaches provide support for disconnected operation by employing different techniques. What is currently missing, however, is a general understanding of the applicability of these techniques to different kinds of software systems, and the manner in which they affect the overall system dependability. This paper strives to improve that understanding. We present a framework for classifying disconnected operation solutions and assess several representative approaches according to the proposed classification. This study highlights several pertinent areas that are currently not supported, that can help to motivate future work on this subject.
AgileEVM - Earned Value Management in Scrum Projects
Authors: Tamara Sulaiman, Brent Barton, Thomas Blackburn
Venue: Proceedings of the conference on AGILE 2006 (2006)

Scrum is an Agile Project Management Framework. This framework specifically focuses on maximizing Return on Investment (ROI). Scrum, however, does not define how to manage and track costs to evaluate actual ROI against the vision. A reasonable cost measurement that integrates with Scrum would help provide an additional feedback loop. We adapted Earned Value Management (EVM), using values defined in Scrum. The result is called AgileEVM (Agile Earned Value Management) and is a simplified set of earned value calculations. From the values in Scrum, we derived a release date estimate using mean velocity and from this equation, generated an equivalent equation using traditional EVM techniques, thus establishing the validity of using EVM with the Scrum framework. Finally, we used this technique on two projects to further test our hypothesis. This investigation also helped us determine the utility of AgileEVM.
Coalitional Tracking in Facial Infrared Imaging and Beyond
Authors: Jonathan Dowdall, Ioannis T. Pavlidis, Panagiotis Tsiamyrtzis
Venue: Proceedings of the 2006 Conference on Computer Vision and Pattern Recognition Workshop (2006)

We propose a novel facial tracking method that uses a distributed network of individual trackers whose interactions are modeled using coalitional game theory. Our tracking method maintains a high level of accuracy and can negotiate surface deformations and occlusions. We tested the method on a substantial video set featuring non-trivial face motion from over 40 subjects in both the infrared and visual spectra. The coalitional tracker demonstrated fault tolerant behavior that exceeds by far the performance of single condensation trackers. Our method represents a shift from the typical tracking paradigms and may find broader application in demanding imaging problems across the electromagnetic spectrum.
LIMBS: Open Source, Open Standards, and Open Content To Foster Learning Resource Exchanges
Authors: Jean-Noel Colin, David Massart
Venue: Proceedings of the Sixth IEEE International Conference on Advanced Learning Technologies (2006)

LIMBS is an open source brokerage system developed in the framework of the CALIBRATE project. LIMBS relies on open standards and open contents to promote exchanges of learning resources within a federation of e-learning systems. Contrary to the CELEBRATE brokerage system, from which it derives, LIMBS's role is limited to carrying and routing messages exchanged by the federation members rather than to enforcing semantic interoperability. With LIMBS, semantic interoperabili-ty becomes the responsibility of the federation members that rely on "clients" to communicate with the brokerage system and to support the negotiation of common query languages and metadata formats. LIMBS itself adopts a serviceoriented architecture so that each service (e.g., resource discovery, digital rights management) can be used separately and combined with any (group) of the others.
High precision shape control of plates using orthotropic piezoelectric actuators
Authors: Quantian Luo, Liyong Tong
Venue: Finite Elements in Analysis and Design (2006)

This paper presents high precision control for the specified plate twisting and bending shapes using the orthotropic piezoelectric actuators. Finite element analysis for composite plates with the adhesively bonded piezoelectric stiffeners is derived and verified with the finite element analysis for composite plates with the adhesively bonded piezoelectric patches and the commercial package NASTRAN. This finite element analysis is then used to simulate plate twisting and bending shape control using the orthotropic piezoelectric actuators through the electric potential optimization. The electric potentials needed for the desired plate shapes are obtained using the linear least square method. The numerical results show that the computed plate twisting and bending shapes correlate remarkably well with the relevant desired ones. Mechanisms of the precise shape control are discussed.
Multi-sensory and Multi-modal Fusion for Sentient Computing
Authors: Christopher Town
Venue: International Journal of Computer Vision (2007)

This paper presents an approach to multi-sensory and multi-modal fusion in which computer vision information obtained from calibrated cameras is integrated with a large-scale sentient computing system known as "SPIRIT". The SPIRIT system employs an ultrasonic location infrastructure to track people and devices in an office building and model their state. Vision techniques include background and object appearance modelling, face detection, segmentation, and tracking modules. Integration is achieved at the system level through the metaphor of shared perceptions, in the sense that the different modalities are guided by and provide updates to a shared world model. This model incorporates aspects of both the static (e.g. positions of office walls and doors) and the dynamic (e.g. location and appearance of devices and people) environment.Fusion and inference are performed by Bayesian networks that model the probabilistic dependencies and reliabilities of different sources of information over time. It is shown that the fusion process significantly enhances the capabilities and robustness of both sensory modalities, thus enabling the system to maintain a richer and more accurate world model.