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Computer Information Systems and Industrial Management Applications (CISIM)

作者： Ivan Zelinka Donald Davendra Václav Snášel Roman Jašek Roman Šenkeřik Zuzana Oplatková Department of Informatics Faculty of Electrical Engineering and Computing Science Technical University of Ostrava Ostrava Czech Republic Department of Artificial Intelligence and Informatics Faculty of Applied Informatics Tomas Bata University Zlin Czech Republic Department of Artificial Intelligence and Informatics Faculty of Applied Informatics Tomas Bata University Zlín Czech Republic

In this article we discuss relations between the so-called complex networks and dynamics of evolutionary algorithms. The main aim of this article is to investigate whether it is possible to model (or vizualize) evolutionary dynamics as complex networks, whose connections will represent interactions amongst the individuals during all generations. Our simulations are based on selected evolutionary algorithms (2 algorithms in 6 versions) and test functions (4 out of 17). Data obtained through the simulations were processed graphically as well as statistically.

关键词： Complex networks Heuristic algorithms Evolutionary computation Chaos Lead Computers Algorithm design and analysis

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Discovering eye gaze behavior during human-agent conversation in an interactive storytelling application 10

Discovering eye gaze behavior during human-agent conversatio...

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International Conference on Multimodal Interfaces and the Workshop on Machine Learning for Multimodal Interaction

作者： Bee, Nikolaus Wagner, Johannes André, Elisabeth Vogt, Thurid Charles, Fred Pizzi, David Cavazza, Marc Department of Human-Centered Multimedia Faculty of Applied Informatics Augsburg University Universitätsstr. 6a 86159 Augsburg Germany University of Teesside School of Computing Borough Road Middlesbrough TS13BA United Kingdom

ISBN: (纸本)9781450304146

In this paper, we investigate the user's eye gaze behavior during the conversation with an interactive storytelling application. We present an interactive eye gaze model for embodied conversational agents in order to improve the experience of users participating in Interactive Storytelling. The underlying narrative in which the approach was tested is based on a classical XIXth century psychological novel: Madame Bovary, by Flaubert. At various stages of the narrative, the user can address the main character or respond to her using free-style spoken natural language input, impersonating her lover. An eye tracker was connected to enable the interactive gaze model to respond to user's current gaze (i.e. looking into the virtual character's eyes or not). We conducted a study with 19 students where we compared our interactive eye gaze model with a non-interactive eye gaze model that was informed by studies of human gaze behaviors, but had no information on where the user was looking. The interactive model achieved a higher score for user ratings than the non-interactive model. In addition we analyzed the users' gaze behavior during the conversation with the virtual character. © 2010 ACM.

关键词： Eye tracking

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Extending PostGIS by imprecise point objects

Extending PostGIS by imprecise point objects

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International Symposium on Intelligent Systems and informatics (SISY)

作者： Đ. Obradović Z. Konjović E. Pap Department of Computing and Automation Faculty of Technical Sciences Novi Sad Serbia Department of Mathematics and Informatics Faculty of Sciences Novi Sad Serbia

In this paper we propose extension of PostGIS Spatial Database Management system by imprecise point object type. Position imprecision is modelled as fuzzy point in R 2 linear fuzzy space. The linear fuzzy space is defined over R 2 where the membership function is convex, upper semi continuous, symmetric w.r.t core, linearly decreasing w.r.t core distance, and core is single point. The fuzzy convex hull is defined in the linear fuzzy space. Main functions that support operations between fuzzy points are implemented in Pl/PgSQL [6] language.

关键词： Spatial databases Data models Computational modeling informatics Equations Extraterrestrial measurements

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Let the play set come alive: Supporting playful learning through the digital augmentation of a traditional toy environment

Let the play set come alive: Supporting playful learning thr...

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2010 8th IEEE International Conference on Pervasive computing and Communications Workshops, PERCOM Workshops 2010

作者： Hinske, Steve Lampe, Matthias Price, Sara Yuill, Nicola Langheinrich, Marc Institute for Pervasive Computing ETH Zurich Zurich Switzerland London Knowledge Lab. University of London London United Kingdom Department of Psychology University of Sussex Falmer Sussex United Kingdom Faculty of Informatics University of Lugano Lugano Switzerland

ISBN: (纸本)9781424466054

The Augmented Knight's Castle (AKC) comprises traditional play figures and scenery embedded with radio frequency identification (RFID) technology to enhance user experience by triggering various forms of audio output. In this paper we present the results of a user study with over 100 children to evaluate the AKC in terms of playful learning, compared with an identical, non-augmented version. Findings suggest that children who played with the AKC remembered facts about the Middle Ages that were presented to them in the form of verbal commentaries, both immediately after the play session as well as in a post-test two months later. © 2010 IEEE.

关键词： Toys

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CAMBer: An approach to support comparative analysis of multiple bacterial strains

CAMBer: An approach to support comparative analysis of multi...

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IEEE International Conference on Bioinformatics and Biomedicine (BIBM)

作者： Michal Wozniak Limsoon Wong Jerzy Tiuryn Faculty of Mathematics Informatics and Mechanics University of Warmia and Mazury Poland School of Computing National University of Singapore Singapore

There is a large amount of inconsistency in gene structure annotations of bacterial strains. This inconsistency is a frustrating impedance to effective comparative genomic analysis of bacterial strains in promising applications such as gaining insights into bacterial drug resistance. Here, we propose CAMBer as an approach to support comparative analysis of multiple bacterial strains. CAMBer produces what we called multigene families. Each multigene family reveals genes that are in one-to-one correspondence in the bacterial strains, thereby permitting their annotations to be integrated. As a result, more accurate and more comprehensive annotations of the bacterial strains can be produced.

关键词： Strain Genomics Microorganisms Bioinformatics Joining processes Immune system Databases

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Making history alive and interactive: Designing an iPhone app to present the summer war of Osaka Byo¯bu

Making history alive and interactive: Designing an iPhone ap...

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2010 16th International Conference on Virtual Systems and Multimedia, VSMM 2010

作者： Carillo, E. Kadobayashi, R. Chikama, M. Shimojo, S. Rodriguez-Echavarria, K. Arnold, D. Cultural Informatics Research Group School of Computing Mathematical and Information Sciences University of Brighton Brighton United Kingdom Kyoto Japan Tokyo/Kyoto Japan Department of Digital Games Faculty of Information Science and Arts Osaka Electro-Communication University Osaka Japan

ISBN: (纸本)9781424490264

Mobile technology is becoming increasingly widespread in museums and cultural heritage sites, and many institutions have already developed applications that can be downloaded on mobile phones. Amongst these, iPhone Applications are certainly the most popular. The research briefly presented here describes the phases of the development of an iPhone application to interactively present the story of the people and places depicted on the Summer War of Osaka byo¯bu (traditional Japanese wooden folding screens) currently displayed at Osaka Castle Museum, Osaka City, Japan. The iPhone application will also be integrated with the Tiled Display Wall system of the Knowledge Creating Communication Research Center of NICT (Kyoto) to test various interaction functionalities. ©2010 IEEE.

关键词： Japan Knowledge Creating Communication Research Center NICT Osaka Castle Museum Osaka City Summer War Tiled Display Wall Usability Evaluation component cultural heritage site display devices history history alive iPhone App iPhone application mobile handsets mobile phone mobile technology tiled display wall system

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Absolute phase mapping for one-shot dense pattern projection

Absolute phase mapping for one-shot dense pattern projection

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IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)

作者： Sergio Fernandez Joaquim Salvi Tomislav Pribanic Institute of Informatics and Applications University of Girona Girona Spain Faculty Electrical Engineering and Computing University of Zagreb Zagreb Croatia

The use of one-shot pattern projection to obtain 3D dense reconstruction constitutes a promising field of research in structured light. Most of the related works presented in the literature are based on the projection of a fringe pattern to extract depth from phase deviation. However, the algorithms employed to unwrap the phase are computationally slow and can fail under certain slopes and occlusions in the object shape. In these lines, a color one-shot dense reconstruction using fringe pattern projection and wavelet decomposition is presented. Moreover, a novel phase unwrapping algorithm is proposed, providing a fast and reliable absolute phase map for depth reconstruction.

关键词： Shape Data mining Phase measurement Portable media players Fourier transforms Application software Cameras informatics Gray-scale Noise level

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Interacting environmental interfaces: Synchronization in substance exchange between environmental interfaces regarded as biophysical complex systems

Interacting environmental interfaces: Synchronization in sub...

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5th Biennial Conference of the International Environmental Modelling and Software Society: Modelling for Environment's Sake, iEMSs 2010

作者： Mihailović, D.T. Budinčević, M. Perišić, D. Balaž, I. Firanj, A. Faculty of Agriculture University of Novi Sad Dositej Obradovic Sq. 8 21000 Novi Sad Serbia Department for Mathematics and Informatics Faculty of Sciences University of Novi Sad Dositej Obradovic Sq. 3 21000 Novi Sad Serbia Scientific Computing Laboratory Institute of Physics P.O. Box 57 11001 Zemun Serbia

ISBN: (纸本)9788890357411

In modeling environmental interfaces regarded as biophysical complex systems, one of the main tasks is to create an operative interface with the external environment. The interface should provide a robust and prompt translation of the vast diversity of external physical and/or chemical changes into a set of signals that are understandable for a biophysical entity. Although the organization of any system is of crucial importance for its functioning, it should not be forgotten that in biophysical systems we deal with real-life problems where a number of other conditions must be satisfied in order to put the system to work. One of them is the proper supply of the system with necessary substances. Their exchange in biophysical systems can be described by the dynamics of driven coupled oscillators. In order to study their behavior, we consider the dynamics of two coupled maps representing the substance exchange processes between two biophysical entities in their surrounding environment. Further, we investigate the behavior of the Lyapunov exponent as a measure of how rapidly two nearby orbits converge or diverge. In addition we calculate corresponding cross-sample entropy as a measure of synchronization.

关键词： Lyapunov methods

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Configuring the stochastic Helmholtz machine for subcortical emotional learning

Configuring the stochastic Helmholtz machine for subcortical...

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International Joint Conference on Neural Networks (IJCNN)

作者： Chi-Yung Yau Kevin Burn Stefan Wermter Faculty of Applied Sciences Department of Computing Engineering and Technology University of Sunderland UK Institute for Knowledge Technology Department of Informatics University of Hamburg Germany

Emotional learning involves two stages. The first is to acquire reinforcers from stimuli and the second is to associate such reinforcers with emotional responses. Both stages can be found occurring in the amygdala. LeDoux's fear circuit model suggests two routes, a subcortical route and a cortical route, for emotional information entering the amygdala for associative learning. It can be used to explain how the actual recognition of emotions from facial expressions can be processed in the brain. Based on the model, a neural architecture is proposed using the stochastic Helmholtz machine (SHM) with the wake-sleep algorithm. In this paper, the results of three experiments about the subcortical emotional learning are reported, where different configurations of SHMs are involved. The first two experiments are to identify a suitable way to allow behavioural responses entering the central nucleus of the amygdala for association. However, both experiments show symptoms of overfitting, where some weights and biases of neurons are observed that will unusually increase during training. Therefore, the final experiment is designed to maintain the range of weights between -1 and +1 in order to solve the overfitting problem. The last experiment shows that the neural architecture with the new weight policy holds a lot of potential for modelling subcortical learning.

关键词： Biological system modeling Feature extraction Neurons Mathematical model Visualization Training Data models

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Social simulation based on human behavioral data collected by web-based experimental system

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Journal of Convergence Information Technology 2010年第4期5卷

作者： Maeda, Taiyo Murata, Tadahiko Kotaka, Daichi Matsumoto, Shigeru Cao, Yaug The Institute for Socionetwork Strategies Kansai University Japan Graduate School of Informatics Kansai University Japan Faculty of Informatics Kansai University Japan Department of Economics Aoyama Gakuin University Japan Policy Grid Computing Laboratory Kansai University Japan

We propose some models to simulate human choice behavior to select facilities. In order to consider models for human behavior, we develop a web-based experimental system to collect the data of human choice behavior in facility selection. Using the developed system, human subjects act their facility selection according to the information such as the congestion level of the facility selected last time. We examine several models to simulate human choice behavior based on the data collected by the experimental system. From our examination, we find that developing models according to experimental results improves simulation results.

关键词： Websites

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