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International Conference on Model-Driven Engineering and Software Development (MODELSWARD)

作者： Péter Fehér Márk Asztalos Tamás Mészáros László Lengyel Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary

Finding patterns in graphs is a fundamental problem in graph theory, and also a practical challenge during the analysis of big data sets. Inexact patterns may correspond to a set of possible exact graphs. Their use is important in many fields where pattern matching is applied (e.g. mining in social networks or criminal investigations). Based on previous work, this paper introduces a pattern specification language with special language features to express inexact patterns. We also show a MapReduce approach-based algorithm that is able to find matches. Our methods make it possible to define inexact patterns and to find the exact matches in large graphs efficiently.

关键词： Pattern matching Loans and mortgages Algorithm design and analysis Big data Distributed databases Europe Parallel processing

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Aggregate Callback: A design pattern for flexible and robust runtime model building

Aggregate Callback: A design pattern for flexible and robust...

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International Conference on Model-Driven Engineering and Software Development (MODELSWARD)

作者： Gábor Kövesdán Márk Asztalos László Lengyel Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary

In modern software engineering environments, tools that use Domain-Specific Languages (DSLs) are often applied. The usual workflow of such tools is that the textual input written in the DSL is parsed and a semantic model is instantiated. This model is later passed to another software component that processes it, e.g. a model transformation, a code generator or a simulator. Building the semantic model inside the parser is often a complex task. The model must be built in such a way that the constraints of the problem domain are enforced so that the consistency of the output is guaranteed. This paper presents a design pattern, referred as Aggregate Callback that supports enforcing constraints in the model and thus helps creating correct models. We have found that the Aggregate Callback pattern is useful for tool developers that build models in their applications.

关键词： DSL Aggregates Software Generators Concrete Context modeling Robustness

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Efficiency Aspects of Orientation Estimation with Optical Flow on Mobiles

Efficiency Aspects of Orientation Estimation with Optical Fl...

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IEEE Eastern European Conference on the Engineering of Computer Based Systems, ECBS-EERC

作者： László Kundra Péter Ekler Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary

In this paper techniques for reliable orientation estimation on Android-based devices are investigated in the aspect of processing demand. In terms of reliability, an optical flow based sensor fusion method is proposed. With a well detailed measurement configuration, the results are shown in the aspect of processor load and different frame rate for both synchronous and asynchronous processing.

关键词： Cameras Optical imaging Image processing Optical sensors Estimation Reliability Robot sensing systems

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Programming language neutral design pattern detection

Programming language neutral design pattern detection

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International Symposium on Computational Intelligence and informatics

作者： Akos Nagy Bence Kovari Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary

Object-oriented design patterns offer a structural and behavioral solution for a given problem in a given context using basic building blocks. They are widely used in software engineering as they promote extensibility, testability, maintainability and reusability. However, besides their use, their detection also has a great significance in the industry. This paper first presents a general, programming language neutral model and architecture for automated design pattern detection in object-oriented source code. To validate the recognition-capability of the framework, we implemented a version to recognize design patterns in C#. To our knowledge, this is the first work in the field that examines source code written in C#. We also discuss actual results of running this implementation on a number of class libraries. These results can later be used as reference for other works focusing on the C# programming language.

关键词： Pattern recognition Computer languages Data models Measurement Algorithm design and analysis Object oriented modeling Computer architecture

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Edge Preserving Range Image Smoothing by Rotated Bilateral Sampling

Edge Preserving Range Image Smoothing by Rotated Bilateral S...

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IEEE Eastern European Conference on the Engineering of Computer Based Systems, ECBS-EERC

作者： Viktor Kovacs Kristof Csorba Gabor Tevesz Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary

In this paper we deal with (step and crease) edge preserving smoothing and normal estimation in low depth-resolution range images. As a result of short base distance stereo, compression or scene geometry, such range images consist of few discrete range values. We propose a method for smoothing such range images by interpolation while preserving boundary and crease edges, and estimating surface normals. The proposed method is based on rotated weighting sampling matrices and iso-range curves extracted from the range data. Samples and weights are selected using a rotated weight matrix and planar surfaces are fitted. Based on the fitting error, the best fit is selected to estimate the surface normal and interpolate surface points in such sparse dataset. Fitting error distribution is also used for estimating crease edge score. Such low-level understanding of range images can be utilized in further processing steps such as segmentation, localization, mapping, object detection etc. The output of the algorithm is presented and evaluated using both simulation and real range image data. It is shown that such sampling preserves crease edges and provides lower estimation errors for interpolated range image points.

关键词： Image edge detection Skeleton Estimation Sensors Smoothing methods Noise Covariance matrices

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Etho-robotics: What kind of behaviour can we learn from the animals?

Etho-robotics: What kind of behaviour can we learn from the ...

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作者： Korondi, Péter Korcsok, Beáta Kovács, Szilveszter Niitsuma, Mihoko Department of Automation and Applied Informatics Budapest University of Technology and Economics Po.Box. 91 BudapestH-1521 Hungary Department of Information Technology University of Miskolc Miskolc-Egyetemváros MiskolcH-3515 Hungary Department of Precise Engineering Chuo University Tokyo Japan

The trends of robotics changes as service robots gain more ground and become part of our daily lives. Service or social robots have to function in less controlled and more dynamically changing environments than industrial robots, and the users of social robots are generally less technologically literate than the users of industrial robots, therefore social robots have to be able to interact naturally with humans and to fit in the human social environment. Social robotics faces new challenges that require an interdisciplinary approach. In contrast to previous approaches where the communication and behaviour of social robots were based on human-human interactions, ethorobotics offer a new direction. Today robotics is not advanced enough to reach the physical and cognitive capabilities of humans thus human-animal interaction can serve as a better model for designing the behaviour of social robots. Human-dog relationship is a good example for this paradigm as dogs have similar roles as social robots will have in the future. Dogs acquired social cognitive skills during domestication that enhances the interspecific relationship with humans and helps their interactions. Etho-robotics research uses ethological principles and methods to derive complex behavioural models which can be transcribed to mathematical form and implemented into robots. Human-robot interaction studies can be conducted to evaluate and refine the implemented models. Etho-robotics research was already used to create behavioural models for attachment and for multiple aspects of human-robot interactions. The application of Fuzzy Rule Interpolation methods fits well the conceptually "spare rule-based" structure of the existing descriptive verbal ethological models, as in case of the descriptive verbal ethological models the "completeness" of the rule-base is not required. The main benefit of the FRI method adaptation in ethological model implementation is the fact, that it has a simple rule-based knowledge

关键词： Human robot interaction

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Towards a physiology based difficulty control system for serious games

Towards a physiology based difficulty control system for ser...

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International Conference on Cognitive Infocommunications (CogInfoCom)

作者： Máté Köles Luca Szegletes Bertalan Forstner Department of Ergonomics and Psychology Budapest University of Technology and Economics Budapest Hungary Department of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary

ISBN: (纸本)9781467381307

Serious games can be most efficient if the users are motivated and engaged in the gameplay. Whereas improving core gameplay mechanics can probably yield good results, a dynamic difficulty controlling system might offer additional benefit to a well-designed game. Although performance is the easiest measure to base a control framework on, it is a combination of many different effects. Physiology channels, such as electroencephalography, electrocardiography and pupillometry can reveal the changes in invested mental effort levels and would serve as a more objective base for a difficulty controlling system. To test this assumption, we used Tetris because it is a well-known game and it is simple to manipulate difficulty. In the first half of the experiment, all participants played four pre-set difficulty levels and one customized. In the second part, we tried to elicit certain mental states (boredom, frustration, engagement and fatigue) that are important markers for a controlling system by manipulating difficulty in different patterns. We have found that only pupil diameter data corresponded with expected results. Possible causes and future directions are discussed.

关键词： Games Physiology Fatigue Electroencephalography Resonant frequency Current measurement Shape

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THE COMPACT LINEAR COLLIDER (CLIC) 2018 SUMMARY REPORT

arXiv

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arXiv 2018年

作者： Charles, T.K. Giansiracusa, P.J. Lucas, T.G. Rassool, R.P. Volpi, M. Balazs, C. Afanaciev, K. Makarenko, V. Patapenka, A. Zhuk, I. Collette, C. Boland, M.J. Abusleme Hoffman, A.C. Diaz, M.A. Garay, F. Chi, Y. He, X. Pei, G. Pei, S. Shu, G. Wang, X. Zhao, F. Zhou, Z. Chen, H. Gao, Y. Huang, W. Kuang, Y.P. Li, B. Li, Y. Meng, X. Shao, J. Shi, J. Tang, C. Wang, P. Wu, X. Zha, H. Ma, L. Han, Y. Fang, W. Gu, Q. Huang, D. Huang, X. Tan, J. Wang, Z. Zhao, Z. Uggerhøj, U.I. Wistisen, T.N. Aabloo, A. Aare, R. Kuppart, K. Vigonski, S. Zadin, V. Aicheler, M. Baibuz, E. Brücken, E. Djurabekova, F. Eerola, P. Garcia, F. Haeggström, E. Huitu, K. Jansson, V. Kassamakov, I. Kimari, J. Kyritsakis, A. Lehti, S. Meriläinen, A. Montonen, R. Nordlund, K. Österberg, K. Saressalo, A. Väinölä, J. Veske, M. Farabolini, W. Mollard, A. Peauger, F. Plouin, J. Bambade, P. Chaikovska, I. Chehab, R. Delerue, N. Davier, M. Faus-Golfe, A. Irles, A. Kaabi, W. LeDiberder, F. Pöschl, R. Zerwas, D. Aimard, B. Balik, G. Blaising, J.-J. Brunetti, L. Chefdeville, M. Dominjon, A. Drancourt, C. Geoffroy, N. Jacquemier, J. Jeremie, A. Karyotakis, Y. Nappa, J.M. Serluca, M. Vilalte, S. Vouters, G. Bernhard, A. Bründermann, E. Casalbuoni, S. Hillenbrand, S. Gethmann, J. Grau, A. Huttel, E. Müller, A.-S. Peiffer, P. Perić, I. de Jauregui, D. Saez Emberger, L. Graf, C. Simon, F. Szalay, M. van der Kolk, N. Brass, S. Kilian, W. Alexopoulos, T. Apostolopoulos, T. Gazis, E.N. Gazis, N. Kostopoulos, V. Kourkoulis, S. Heilig, B. Lichtenberger, J. Shrivastava, P. Dayyani, M.K. Ghasem, H. Hajari, S.S. Shaker, H. Ashkenazy, Y. Popov, I. Engelberg, E. Yashar, A. Abramowicz, H. Benhammou, Y. Borysov, O. Borysova, M. Levy, A. Levy, I. Alesini, D. Bellaveglia, M. Buonomo, B. Cardelli, A. Diomede, M. Ferrario, M. Gallo, A. Ghigo, A. Giribono, A. Piersanti, L. Stella, A. Vaccarezza, C. de Blas, J. Franceschini, R. D’Auria, G. University of Melbourne Melbourne Australia Monash University Melbourne Australia Belarusian State University Minsk Belarus Joint Institute for Power and Nuclear Research - Sosny Minsk Belarus Université libre de Bruxelles Brussels Belgium University of Saskatchewan Saskatoon Canada Pontificia Universidad Católica de Chile Santiago Chile Institute of High Energy Physics Beijing China Tsinghua University Beijing China Shandong University Jinan China Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai China Aarhus University Aarhus Denmark University of Tartu Tartu Estonia Helsinki Institute of Physics University of Helsinki Helsinki Finland CEA Gif-sur-Yvette France Laboratoire de l’Accélérateur Linéaire Université de Paris-Sud XI IN2P3/CNRS Orsay France LAPP Université de Savoie IN2P3/CNRS Annecy France Karlsruhe Germany Max-Planck-Institut für Physik Munich Germany Department of Physics University of Siegen Siegen Germany National Technical University of Athens Athens Greece Department of Basic Geophysical Research Mining and Geological Survey of Hungary Tihany Hungary Space Research Laboratory Eötvös Loránd University Budapest Hungary Raja Ramanna Centre for Advanced Technology Department of Atomic Energy Indore India School of Particles and Accelerators Institute for Research in Fundamental Sciences Tehran Iran Racah Institute of Physics Hebrew University of Jerusalem Jerusalem Israel Raymond & Beverly Sackler School of Physics & Astronomy Tel Aviv University Tel Aviv Israel INFN e Laboratori Nazionali di Frascati Frascati Italy Università di Padova and INFN Padova Italy Università degli Studi Roma Tre and INFN Roma Italy Elettra Sincrotrone Trieste Trieste Italy High Energy Accelerator Research Organization KEK Tsukuba Japan University of Antananarivo Antananarivo Madagascar Eindhoven University of Technology Eindhoven Netherlands Nikhef Amsterdam Netherlands Department of Physics and Technology Univer

The Compact Linear Collider (CLIC) is a TeV-scale high-luminosity linear e+e− collider under development at CERN. Following the CLIC conceptual design published in 2012, this report provides an overview of the CLIC project, its current status, and future developments. It presents the CLIC physics potential and reports on design, technology, and implementation aspects of the accelerator and the detector. For an optimal exploitation of its physics potential, CLIC is foreseen to be built and operated in stages, at centre-of-mass energies of 380 GeV, 1.5 TeV and 3 TeV, respectively, for a site length ranging from 11 km to 50 km. CLIC uses a two-beam acceleration scheme, in which normal-conducting high-gradient 12 GHz accelerating structures are powered via a high-current drive beam. For the first stage, an alternative with X-band klystron powering is also considered. CLIC accelerator optimisation, technical developments and system tests have resulted in significant progress in recent years. Moreover, this has led to an increased energy efficiency (power around 170 MW) for the 380 GeV stage, together with a reduced cost estimate at the level of 6 billion CHF. The detector concept, which matches the physics performance requirements and the CLIC experimental conditions, has been refined using improved software tools for simulation and reconstruction. Significant progress has been made on detector technology developments for the tracking and calorimetry systems. A wide range of CLIC physics studies has been conducted, both through full detector simulations with overlay of beam-induced backgrounds, and through parametric studies, together providing a broad overview of the CLIC physics potential. Each of the three energy stages adds cornerstones of the full CLIC physics programme, such as Higgs width and couplings, top-quark properties, Higgs self-coupling, direct searches, and many precision electroweak measurements. The interpretation of the combined results gives crucial a

关键词： Computer software

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Control strategy for an industrial process monitoring robot

Control strategy for an industrial process monitoring robot

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IEEE/SICE International Symposium on System Integration

作者： Fabian Zimber Csongor Mark Horvath Trygve Thomessen Jorg Franke Institute for Factory Automation and Production Systems Friedrich-Alexander-Universit¨at Erlangen-N¨urnberg (FAU) 91058 Erlangen Germany Department of Mechatronics Optics and Mechanical Engineering Informatics Budapest University of Technology and Economics 1111 Budapest Hungary PPM AS Leirfossvegen 27 7038 Trondheim Norway Institute for Factory Automation and Production Systems Friedrich-Alexander-Universit¨at Erlangen-N¨urnberg (FAU) Germany

ISBN: (纸本)9781509033300

The installation of industrial robot systems requires considerable human effort both related to the mechanical and electromechanical setup. However, the task of programming a robot is of particular importance to satisfy given process requirements. Typically, only 20% of the entire programming time is needed to define the path and logics while the remaining 80% is related to process optimization. This causes considerable costs due to the need for human presence. With a remote assistance system and a process monitoring robot, expert assistance could be decoupled from the physical presence. An important challenge is to solve the tracking between the monitoring robot and the robot performing the process. In this paper we propose a controllable sensor system for enhanced process monitoring. The system is decoupled from the process tool and can therefore be controlled independently. It provides the machine operator with adaptive process information and enhances the capabilities to qualify complex processes. We apply the concept to an autonomous sensor robot monitoring an industrial robot system for heavy, multipass TIG welding of voluminous workpieces.

关键词： Robot sensing systems Monitoring Welding Service robots Collision avoidance Robot kinematics

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Comparing genetic operators for the timetabling problem

Comparing genetic operators for the timetabling problem

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International Symposium on applied Machine Intelligence and informatics (SAMI)

作者： Attila Hideg Dept. of Automation and Applied Informatics Budapest University of Technology and Economics Budapest Hungary

This paper describes a genetic algorithm used to solve the timetabling problem. Our approach will deal with the weekly curriculum based timetabling problem using real datasets from the university of Udine. Before prop... 详细信息

关键词： Biological cells Genetics Sociology Statistics Genetic algorithms Optimization Testing

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