ppxscal/embedding_network huggingface dataset:
eParticipation for Adolescent Citizens (in Austria)
Authors: Noella Edelmann, Johann Hoechtl, Peter Parycek
Venue: Proceedings of the 1st International Conference on Electronic Participation (2009)

In Austria, two recent eParticipation projects focused on adolescent citizens. The first project, "mitmachen.at --- move your future" was to provide initial experiences with an eParticipation tool. The second project, "Jugend2help", applied the lessons learned from the "mitmachen.at" project to improve the Austrian public administration web portal for adolescent citizens. In both projects, the results indicate that web portals and eParticpation seems to suit the adolescents' information and communication needs. Involving the users is central to the development of an eParticipation process or platform so that the users' specific characteristics (age, skills), needs and interests are included appropriately. The target users' characteristics are also important for developing a marketing strategy which is able to reach them. Other issues which must also be considered in eParticipation are accessibility, inclusion and possibly gender.
On the Performances of Nash Equilibria in Isolation Games
Authors: Vittorio Bilò, Michele Flammini, Gianpiero Monaco, Luca Moscardelli
Venue: Proceedings of the 15th Annual International Conference on Computing and Combinatorics (2009)

We study the performances of Nash equilibria in isolation games, a class of competitive location games recently introduced in [14]. For all the cases in which the existence of Nash equilibria has been shown, we give tight or asymptotically tight bounds on the prices of anarchy and stability under the two classical social functions mostly investigated in the scientific literature, namely, the minimum utility per player and the sum of the players' utilities. Moreover, we prove that the convergence to Nash equilibria is not guaranteed in some of the not yet analyzed cases.
Constructing Yeast Phenotypic Gene Network Using Morphological Inclusion Relations
Authors: Natsumi Abe, Jun Sese
Venue: Proceedings of the 2009 Ninth IEEE International Conference on Bioinformatics and Bioengineering (2009)

Cell morphology is an often-utilized feature in biology and medical science because changes in the shape of a cell indicate that some abnormal alterations may have occurred within the cell. However, there is little knowledge about the relationship between phenotype and genes. In this study, for determining the genetic effect on phenotypes,we designed a new algorithm called phenotype analysis with layered conjecture (PALACE); this algorithmwhich infers a gene network that represents the dependency of morphological features using a comprehensive yeast phenotype dataset resulting from the deletion of one gene. PALACE first creates gene groups in which the abnormal phenotypes of its members are mutually close; then, it generates a network with groups based on inclusion relations between abnormal phenotypes. A network inferred from 172 transcriptional genes comprises 63 gene groups and 183 edges. The inferred network has biologically reasonable features; however, it is independent of known metabolic networks. Therefore, the network is expected to include information leading to new insights into cell biology.
Evolution of Query Optimization Methods
Authors: Abdelkader Hameurlain, Franck Morvan
Venue: Transactions on Large-Scale Data- and Knowledge-Centered Systems I (2009)

Query optimization is the most critical phase in query processing. In this paper, we try to describe synthetically the evolution of query optimization methods from uniprocessor relational database systems to data Grid systems through parallel, distributed and data integration systems. We point out a set of parameters to characterize and compare query optimization methods, mainly: (i) size of the search space, (ii) type of method (static or dynamic), (iii) modification types of execution plans (re-optimization or re-scheduling), (iv) level of modification (intra-operator and/or inter-operator), (v) type of event (estimation errors, delay, user preferences), and (vi) nature of decision-making (centralized or decentralized control).The major contributions of this paper are: (i) understanding the mechanisms of query optimization methods with respect to the considered environments and their constraints (e.g. parallelism, distribution, heterogeneity, large scale, dynamicity of nodes) (ii) pointing out their main characteristics which allow comparing them, and (iii) the reasons for which proposed methods become very sophisticated.
"Plug: Secrets of the Museum": A Pervasive Game Taking Place in a Museum
Authors: Michel Simatic, Isabelle Astic, Coline Aunis, Annie Gentes, Aude Guyot-Mbodji, Camille Jutant, Emmanuel Zaza
Venue: Proceedings of the 8th International Conference on Entertainment Computing (2009)

"Plug: Secrets of the Museum" (PSM) is a game played with NFC-enabled mobile phones inside a museum containing dedicated passive RFID tags. During a PSM session, 8 teams exchange virtual cards representing objects located in the museum. These exchanges are done either with RFID tags or with other teams. PSM game design results in an educational and entertaining game which is much more attractive than the plain old treasure hunt proposed by several museums. Thus PSM is a good companion to discover and even take up a museum.
Antecedents of Attributions in an Educational Game for Social Learning: Who's to Blame?
Authors: Amy Ogan, Vincent Aleven, Julia Kim, Christopher Jones
Venue: Proceedings of the 3d International Conference on Online Communities and Social Computing: Held as Part of HCI International 2009 (2009)

Games are increasingly being used as educational tools, in part because they are presumed to enhance student motivation. We look at student motivation in games from the viewpoint of attribution theory, which predicts more learning by students who make attributions along certain dimensions, and thus may provide a way of examining this claim in more detail. We studied 13 students as they played a game designed to teach negotiation skills in a cultural context. Students' overall attributional style was surveyed, as well as their achievement attributions following each meeting with a game character. Correlational results show that unexpectedly, students' attributional style does not predict in-game attributions. However, characteristics such as gender, negotiation expertise, and frequency of game play are significantly correlated with particular in-game attributions. Because attributions have been show to be causally related to learning, with further study, such results might be used to positively influence educational game design.
The Design of an Antenna Array Used for the Suppression of Es Layer Clutter
Authors: Long Zhao
Venue: Proceedings of the 2009 International Conference on Environmental Science and Information Application Technology - Volume 02 (2009)

There has Es layer clutter in the high frequency surface wave radar, and the Es layer clutter has the difference polarized characters with the signal. Horizontally polarized antennas can be added as auxiliary antennas in the high frequency surface wave radar system that uses vertically polarized antennas to suppress the Es layer clutter. The clutter-to-signal ratio in the outputs of the auxiliary antennas will affect the suppression of the Es layer clutter in the main antennas. The bigger of the clutter-to-signal ratio in the outputs of the auxiliary antennas, the better suppression result of the Es layer clutter in the main antennas achieved. In order to increase the clutter-to-signal ratio in the outputs of the auxiliary antennas, an antenna array consists of three horizontally polarized antennas is proposed in this paper. Using the superdirective synthetically method, the mainlobe of the auxiliary horizontally polarized antenna array is put on the direction of the Es layer clutter arrival direction, and a low sidelobe is put on the direction of the signal arrival direction. Then the auxiliary horizontally polarized antenna array will have a big gain on Es layer clutter and a little gain on signal. So the clutter-to-signal ratio in the outputs of the auxiliary horizontally polarized antenna array will be increased, the suppression of the Es layer clutter in the main antennas which use the horizontally polarized antenna array as auxiliary antenna will be more effective.
Present and Future Challenges for ASP Systems
Authors: Agostino Dovier, Enrico Pontelli
Venue: Proceedings of the 10th International Conference on Logic Programming and Nonmonotonic Reasoning (2009)

The advent of ASP has reinvigorated the field of logic programming. ASP has a simple syntax, which from the beginning appealed logic programmers--thanks also to its similarity to Prolog's syntax. ASP has a well-understood declarative semantics, which can adequately capture non-monotonicity. ASP benefits from good implementations, which guarantee an adequate level of efficiency and reflect the declarative nature of the paradigm--differently from the case of Prolog, where there is a disconnect between declarative semantics and the implementation of its operational semantics.
An Algorithm Based Fault Tolerant Scheme for Elliptic Curve Public-Key Cryptography
Authors: Chang N. Zhang, Xiao Wei Liu
Venue: Proceedings of the 2009 Second International Conference on Dependability (2009)

In this paper, an algorithm based fault tolerant (ABFT) scheme for Elliptic Curve Cryptography (ECC) public-key cipher is presented. By adding 2n+1 check sums, the proposed scheme is able to detect and correct up to three errors which may occur during the massive computation process or/and data transmission process for total n*n groups of data. The other advantage of the proposed fault tolerant scheme include: (1). It maintains almost the same throughput when there is no error detected. (2). It does not require additional arithmetic units to create check sums and error detection. (3). It can be easily implemented by software or hardware.
Enhancing Text-Based Analysis Using Neurophysiological Measures
Authors: Adrienne Behneman, Natalie Kintz, Robin Johnson, Chris Berka, Kelly Hale, Sven Fuchs, Par Axelsson, Angela Baskin
Venue: Proceedings of the 5th International Conference on Foundations of Augmented Cognition. Neuroergonomics and Operational Neuroscience: Held as Part of HCI International 2009 (2009)

Intelligence analysts are faced with the demanding task of identifying patterns in large volumes of complex, textual sources and predicting possible outcomes based on perceived patterns. To address this need, the Advanced Neurophysiology for Intelligence Text Analysis (ANITA) system is being developed to provide a real-time analysis system using EEG to monitor analysts' processing of textual data during evidence gathering. Both conscious and unconscious `interest' are identified by the neurophysiological sensors based on the analyst's mental model, as related to specific sentences, indicating relevance to the analysis goal. By monitoring the evidence gathering process through neurophysiological sensors and implementation of real-time strategies, more accurate and efficient extraction of evidence may be achieved. This paper outlines an experiment that focused on identifying distinct changes in EEG signals that can be used to decipher sentences of relevance versus those of irrelevance to a given proposition.
A Survey on Fault Tolerant Routing Techniques in Wireless Sensor Networks
Authors: Hind Alwan, Anjali Agarwal
Venue: Proceedings of the 2009 Third International Conference on Sensor Technologies and Applications (2009)

Wireless Sensor Networks are without a doubt one of the central issues in current research topics due to the harsh environmental conditions in which such networks can be deployed and their unique sensor network characteristics,specifically limited power supply, sensing, processing and communication capabilities. Presented with many challenges and design issues that affect the data routing, a need for a fault tolerant routing protocol becomes essential. In this paper, we summarize and highlight the key ideas of existing fault tolerant techniques of routing protocols, survey existing routing protocols proposed to support fault tolerance. Finally, we provide some future research directions in the area of fault tolerance in wireless sensor networks routing.
Automatic Data Records Extraction from List Page in Deep Web Sources
Authors: Chen Hong-ping, Fang Wei, Yang Zhou, Zhuo Lin, Cui Zhi-Ming
Venue: Proceedings of the 2009 Asia-Pacific Conference on Information Processing - Volume 01 (2009)

with the explosive growth and popularity of the World Wide Web, a wealth of online e-commerce information resources become available. List pages in these web sites are usually automatically generated from the back-end DBMS using scripts. In order to provide value-added services and convenience for users, it is very necessary to integrate web sources of the same domain. Given the huge number of these web pages, it is difficult and even impossible to use a manual approach to extract data records from these list pages on a large scale. According to characteristics of the template-based list pages, in this paper, we propose a LBDRF algorithm to solve the problem of automatic data records extraction from web pages in Deep Web. Our experimental results show that the proposed method performs well.
Enforcing access control in Web-based social networks
Authors: Barbara Carminati, Elena Ferrari, Andrea Perego
Venue: ACM Transactions on Information and System Security (TISSEC) (2009)

In this article, we propose an access control mechanism for Web-based social networks, which adopts a rule-based approach for specifying access policies on the resources owned by network participants, and where authorized users are denoted in terms of the type, depth, and trust level of the relationships existing between nodes in the network. Different from traditional access control systems, our mechanism makes use of a semidecentralized architecture, where access control enforcement is carried out client-side. Access to a resource is granted when the requestor is able to demonstrate being authorized to do that by providing a proof. In the article, besides illustrating the main notions on which our access control model relies, we present all the protocols underlying our system and a performance study of the implemented prototype.
Boundary-Based Feature Extraction and Recognition of Breast Tumors Using Support Vector Machine
Authors: Lin Jiangli, Chen Ke, Peng Yulan
Venue: Proceedings of the 2009 International Forum on Information Technology and Applications - Volume 03 (2009)

Breast cancer is the most common cancer among women. To assist the ultrasound (US) diagnosis of solid breast tumors, the lobulated contour feature quantified by boundary-based corner counts is studied to classify breast tumors as malignant or benign. The corner points in this research was detected based on wavelet transform (WT), and the classification selected through comparison is Support Vector Machine (SVM), with radial based function (RBF) as the kernel function. Experiments were done on a total of 240 cases of breast lesions, including 104 cases of malignant tumors proved at histology and 136 cases of benign tumors. The accuracy of this system is 95.42%, specificity is 98.53% while sensitivity is 91.35%. Consequently, by SVM, the obtained results show that the pro-posed method can be a new intelligent assistance diagnosis.
A DNA-Based Algorithm for the Solution of Not-All-Equal 3-SAT Problem
Authors: Nung-Yue Shi, Chih-Ping Chu
Venue: Proceedings of the 2009 WASE International Conference on Information Engineering - Volume 02 (2009)

AbstractSatisfiability problem is given a Boolean formula, and decide if a satisfying truth assignment exists. ( ) ( )…( ) () is an example of Boolean formula. k-SAT means that each clause has exactly k literals. Not-All-Equal (NAE) 3-SAT problem is defined by Garey and Johnson in 1979 as follows: There is a set V of variables and a collection C of clauses over V such that each clause has 3 literals. And the question is : Is there a truth assignment for V such that each clause has at least one true and at least one false literal?Note that the only difference with 3-SAT is that as well as one true literal, there must also be one false literal in each clause.In this paper, we will use molecular solution to find all true assignment (3 SAT problem) and furthermore find Not-All-Equal (NAE) solutions on DNA-based Supercomputing. Finally, the simulated experiment is applied to verify correction of the proposed DNA-based algorithm for solving the Not-All-Equal 3-SAT problem.
Backward and forward bisimulation minimization of tree automata
Authors: Johanna Högberg, Andreas Maletti, Jonathan May
Venue: Theoretical Computer Science (2009)

We improve on an existing [P.A. Abdulla, J. Hogberg, L. Kaati, Bisimulation minimization of tree automata, International Journal of Foundations of Computer Science 18(4) (2007) 699-713] bisimulation minimization algorithm for finite-state tree automata by introducing backward and forward bisimulation and developing minimization algorithms for them. Minimization via forward bisimulation is also effective on deterministic tree automata, faster than the previous algorithm, and yields the minimal equivalent deterministic tree automaton. Minimization via backward bisimulation generalizes the previous algorithm and can yield smaller automata but is just as fast. We demonstrate implementations of these algorithms on a typical task in natural language processing.
Automatically training a problematic dialogue predictor for a spoken dialogue system
Authors: Marilyn A. Walker, Irene Langkilde-Geary, Helen Wright Hastie, Jerry Wright, Allen Gorin
Venue: Journal of Artificial Intelligence Research (2002)

Spoken dialogue systems promise efficient and natural access to a large variety of information sources and services from any phone. However, current spoken dialogue systems are deficient in their strategies for preventing, identifying and repairing problems that arise in the conversation. This paper reports results on automatically training a Problematic Dialogue Predictor to predict problematic human-computer dialogues using a corpus of 4692 dialogues collected with the How May I Help YouSM spoken dialogue system. The Problematic Dialogue Predictor can be immediately applied to the system's decision of whether to transfer the call to a human customer care agent, or be used as a cue to the system's dialogue manager to modify its behavior to repair problems, and even perhaps, to prevent them. We show that a Problematic Dialogue Predictor using automatically-obtainable features from the first two exchanges in the dialogue can predict problematic dialogues 13.2% more accurately than the baseline.
Application and Design of Real-Time Control System for the Quad-rotor Helicopter
Authors: Xiaojie Liu, Xiaohui Zhao, Haijun Gu, Anand Sanchez
Venue: Proceedings of the 2009 International Conference on Measuring Technology and Mechatronics Automation - Volume 02 (2009)

The real-time embedded control system for the quad-rotor helicopter is designed by using commercially available components which are inexpensive with the driver modified of BLDC (Brushless Direct Current) motor. These components are integrated into the electric PCB (Printed Circuit Board) meanwhile the corresponding embedded multitasking software is developed. We evaluate the performance of this platform in the quad-rotor helicopter using two different control strategies. It is showed by experimental results that the real-time embedded control system works satisfactorily in the stabilization of mini quad-rotor helicopter in hovering, which is proved this onboard embedded control system is stable and highly reliable with low cost.
Multigrid algorithms for high-order discontinuous Galerkin discretizations of the compressible Navier-Stokes equations
Authors: Khosro Shahbazi, Dimitri J. Mavriplis, Nicholas K. Burgess
Venue: Journal of Computational Physics (2009)

Multigrid algorithms are developed for systems arising from high-order discontinuous Galerkin discretizations of the compressible Navier-Stokes equations on unstructured meshes. The algorithms are based on coupling both p- and h-multigrid (ph-multigrid) methods which are used in nonlinear or linear forms, and either directly as solvers or as preconditioners to a Newton-Krylov method. The performance of the algorithms are examined in solving the laminar flow over an airfoil configuration. It is shown that the choice of the cycling strategy is crucial in achieving efficient and scalable solvers. For the multigrid solvers, while the order-independent convergence rate is obtained with a proper cycle type, the mesh-independent performance is achieved only if the coarsest problem is solved to a sufficient accuracy. On the other hand, the multigrid preconditioned Newton-GMRES solver appears to be insensitive to this condition and mesh-independent convergence is achieved under the desirable condition that the coarsest problem is solved using a fixed number of multigrid cycles regardless of the size of the problem. It is concluded that the Newton-GMRES solver with the multigrid preconditioning yields the most efficient and robust algorithm among those studied.
Polynomial Regression Spectra Reconstruction of Arctic Charr's RGB
Authors: J. Birgitta Martinkauppi, Yevgeniya Shatilova, Jukka Kekäläinen, Jussi Parkkinen
Venue: Computational Color Imaging: Second International Workshop, CCIW 2009, Saint-Etienne, France, March 26-27, 2009. Revised Selected Papers (2009)

Arctic Charr (Salvelinus alpinus L.) exhibit red ornamentation at abdomen area during the mating season. The redness is caused by carotenoid components and it assumed to be related to the vitality, nutritional status, foraging ability and generally health of the fish. To assess the carotenoid amount, the spectral data is preferred but it is not always possible to measure it. Therefore, an RGB-to-spectra transform is needed. We test here polynomial regression model with different training sets to find good model especially for Arctic charr.
A Pilot Study on BSN-Based Ubiquitous Energy Expenditure Monitoring
Authors: S. J. Lin, L. Wang, B. Y. Huang, Y. T. Zhang, X. M. Wu, J. P. Zhao
Venue: Proceedings of the 2009 Sixth International Workshop on Wearable and Implantable Body Sensor Networks (2009)

This paper presented a wearable body sensor network (BSN) that could be potentially employed for dynamic body energy expenditure monitoring. Three compact BSN nodes were deployed at wrist, abdomen and ankle, respectively. Acceleration signals from the multiple body sites were used to calculate a whole body weighted acceleration value. Preliminary results indicated that the standard deviation of the whole body value was smaller than that from any individual body site. There was a strong linear correlation between the whole body weighted acceleration value and the speed, but this correlation was highly subject-dependant. The pilot study presented the first several steps towards a pervasive approach for body energy expenditure monitoring.