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27th AAAI Conference on Artificial Intelligence, AAAI 2013

作者： Sato, Yoshikuni Miwa, Makoto Takeuchi, Shogo Takahashi, Daisuke Advanced Research Technology Laboratories Graduate School of Systems and Information Engineering University of Tsukuba Japan NaCTeM School of Computer Science University of Manchester United Kingdom JST ERATO Minato Discrete Structure Manipulation System Project United States Faculty of Engineering Information and Systems University of Tsukuba Japan

ISBN: (纸本)9781577356158

The learning of evaluation functions from game records has been widely studied in the field of computer game-playing. Conventional learning methods optimize the evaluation function parameters by using the game records of expert players in order to imitate their plays. Such conventional methods utilize objective functions to increase the agreement between the moves selected by game-playing programs and the moves in the records of actual games. The methods, however, have a problem in that increasing the agreement does not always improve the strength of a program. Indeed, it is not clear how this agreement relates to the strength of a trained program. To address this problem, this paper presents a learning method to optimize objective function parameters for strength in game-playing. The proposed method employs an evolutionary learning algorithm with the strengths (Elo ratings) of programs as their fitness scores. Experimental results show that the proposed method is effective since programs using the objective function produced by the proposed method are superior to those using conventional objective functions. © 2013, Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词： Computer games

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Two-degree-of-freedom control of a stacker crane

Two-degree-of-freedom control of a stacker crane

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ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009

作者： Sasaki, Minoru Shimizu, Toshimi Suzuki, Kengo Naito, Shingo Ito, Satoshi Department of Human and Information Systems Engineering Gifu University Gifu Japan Graduate School of Science and Technology Niigata University Niigata Japan Daifuku Institute of Technology Inc. Osaka 555-001 Japan

ISBN: (纸本)9784907764296

This paper presents a motion control of a stacker crane applying a two-degree-of-freedom control. The two-degree-of-freedom control system consists of a feed forward controller based on an inverse system and a feed back controller with suppressing the vibration effectively and stabilizing. Feedback control of the motion of the stacker crane is derived by considering the time rate of change of the total energy of the system. This approach has the advantage over the conventional methods in the respect that it allows one to deal directly with the system's partial differential equations without resorting to approximations. The paper concludes by presenting some numerical results and experimental results for a special case using a proposed control system. These results show that the two-degree-of-freedom control system can realize faster and precise tracking control of the flexible stacker crane system. © 2009 SICE.

关键词： degrees of freedom (mechanics)

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Statistical Mechanics of Labor Markets

Statistical Mechanics of Labor Markets

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SICE Annual Conference

作者： He Chen Takero Ibuki Jun-ichi Inoue Complex Systems Engineering Graduate School of Information Science and Technology Hokkaido University

ISBN: (纸本)9781457707148

On the basis of statistical mechanics, we introduce a probabilistic model of labor markets for university graduates in Japan. In order to make a model of the market efficiently, we shall take into account the following assumptions. Namely, each company fixes the number of opening positions for newcomers and the number itself is independent of business year. The ability of gathering newcomers depends on the result of matching process in past business years. This fact means that the ability of the company is weaken if the company did not make their quota or the company gathered applicants too much over the quota. All labors, in particular, university graduates who are looking for their jobs can access the public information about the ranking of companies. By assuming the above essential key points, we construct the energy function of each company and describe the probability that an arbitrary company gets students at each business year by a Boltzmann-Gibbs distribution. We evaluate the relevant physical quantities such as the employment rate. We find that the system undergoes a phase transition from the 'good employment phase' to 'poor employment phase' with spontaneous symmetry breaking when one controls the degree of importance for the ranking. With the assistance of a chaotic map for the inflation rate given by Neugart (2004), we also attempt to draw the so-called Philips curve. The condition on which the long-time average of inflation rate becomes negative with high unemployment rate, which might be regard as an indicator for a sort of 'crisis' is discussed.

关键词： Labor markets Statistical mechanics Phase transition Agent-based simulation Philips curve Econophysics

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Relationship analysis between puzzle-like programming game and achievement result after learning the basic of programming

Relationship analysis between puzzle-like programming game a...

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2018 International MultiConference of Engineers and Computer Scientists, IMECS 2018

作者： Matsumoto, Shimpei Yamagishi, Shuichi Kashima, Tomoko Department of Information Systems and Management Faculty of Applied Information Science Hiroshima Institute of Technology Graduate School of Engineering 2-1-1 Miyake Saeki-ku Hi-roshima731-5193 Japan Department of Information and Systems Engineering Faculty of Engineering Kindai University 1 Takaya Umenobe Higashi-Hiroshima City Hiroshima739-2116 Japan

ISBN: (纸本)9789881404886

Japan Electronics and information technology Industries Association develops a puzzle-like programming game “Algologic” aiming to experience the concept of an algorithm for inexperienced programming learners. This is simple puzzle game aiming at solving a problem by automatically controlling a robot. The user designs an autonomous robot by selecting some of the instruction blocks, arranging the blocks in an appropriate order, and giving them to the robot. Before university students learn the basic of programming, with this programming puzzle game, we conducted a test to determine whether algorithms each student gave to the robot were correct or not. Likewise, after students have learned the basic of programming, we conducted a comprehension test to clarify the reachability. In this paper, we aim to investigate the relation between the comprehension of Algologic and the achievement degree of students after learning of programming and report the analysis result. Analysis results revealed that the results of Algologic test and the achievement results after learning programming were significantly in a positive relationship. © 2018 Newswood Limited. All rights reserved.

关键词： Robot programming

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Imitation Learning for Variable Speed Contact Motion for Operation up to Control Bandwidth

arXiv

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arXiv 2021年

作者： Sakaino, Sho Fujimoto, Kazuki Saigusa, Yuki Tsuji, Toshiaki Faculty of Engineering Information and Systems Department of Intelligent Interaction Technologies University of Tsukuba Japan Electrical and Electronic Systems Saitama University Saitama Japan Graduate School of Science and Technology Degree Programs in Intelligent and Mechanical Interaction Systems University of Tsukuba Japan

The generation of robot motions in the real world is difficult by using conventional controllers alone and requires highly intelligent processing. In this regard, learning-based motion generations are currently being investigated. However, the main issue has been improvements of the adaptability to spatially varying environments, but a variation of the operating speed has not been investigated in detail. In contact-rich tasks, it is especially important to be able to adjust the operating speed because a nonlinear relationship occurs between the operating speed and force (e.g., inertial and frictional forces), and it affects the results of the tasks. Therefore, in this study, we propose a method for generating variable operating speeds while adapting to spatial perturbations in the environment. The proposed method can be adapted to nonlinearities by utilizing a small amount of motion data. We experimentally evaluated the proposed method by erasing a line using an eraser fixed to the tip of the robot as an example of a contact-rich task. Furthermore, the proposed method enables a robot to perform a task faster than a human operator and is capable of operating close to the control bandwidth. Copyright © 2021, The Authors. All rights reserved.

关键词： Motion planning

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Robots on self-organizing knowledge networks

Robots on self-organizing knowledge networks

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Proceedings- 2004 IEEE International Conference on Robotics and Automation

作者： Chong, Nak Young Hongu, Hiroshi Miyazaki, Manabu Takemura, Koji Ohara, Kenichi Ohba, Kohtaro Hirai, Shigeoki Tanie, Kazuo School of Information Science JAIST Ishikawa 923-1292 Japan Advanced Engineering Systems University of Tsukuba Ibaraki 305-8577 Japan Graduate School of Engineering Shibaura Institute of Technology Tokyo 108-8548 Japan Intelligent Systems Institute AIST Ibaraki 305-8568 Japan

In this work, we propose a new framework for better deployment and utilization of robots in our uncertain, unstructured everyday environments. Programming robots can be a very time-consuming process and seems almost impossible for ordinary end users. To cope with many challenges in the user programming, this work is to provide an open environment for building robot programming automatically, where we have robots learn how to accomplish commanded tasks interacting with the object. An integrated sensing and computing tag is embedded into every single object in the environment. In the robot controller, only the basic software libraries for low-level robot motion control are provided by the robot manufacturer. The main contributions of this work is to develop the knowledge integrator platform that we call Omniscient Organizer that generates the application programs and send them to the robot controller through networks. In the Omniscient Organizer, the object-related information downloaded from the object web server merges into robot control software based on the task commands from the human. We have built a test bed and demonstrated that a robot can perform common household tasks such as clearing the table within the proposed framework.

关键词： Robot programming

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An online algorithm optimally self-tuning to congestion for power management problems

An online algorithm optimally self-tuning to congestion for ...

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9th International Workshop on Approximation and Online Algorithms, WAOA 2011

作者： Bein, Wolfgang Hatta, Naoki Hernandez-Cons, Nelson Ito, Hiro Kasahara, Shoji Kawahara, Jun Center for Information Technology and Algorithms School of Computer Science University of Nevada Las Vegas NV United States Department of Communications and Computer Engineering Graduate School of Informatics Kyoto University Japan Department of Systems Science Graduate School of Informatics Kyoto University Japan JST ERATO MINATO Project Japan

ISBN: (纸本)9783642291159

We consider the classical power management problem: There is a device which has two states ON and OFF and one has to develop a control algorithm for changing between these states as to minimize (energy) cost when given a sequence of service requests. Although an optimal 2-competitive algorithm exists, that algorithm does not have good performance in many practical situations, especially in case the device is not used frequently. To take the frequency of device usage into account, we construct an algorithm based on the concept of "slackness degree." Then by relaxing the worst case competitive ratio of our online algorithm to 2 + Ε, where Ε is an arbitrary small constant, we make the algorithm flexible to slackness. The algorithm thus automatically tunes itself to slackness degree and gives better performance than the optimal 2-competitive algorithm for real world inputs. In addition to worst case competitive ratio analysis, a queueing model analysis is given and computer simulations are reported, confirming that the performance of the algorithm is high. © 2012 Springer-Verlag.

关键词： Queueing theory

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Using SYCLomatic to Migrate CUDA Code to oneAPI Adapting NVIDIA GPU

Using SYCLomatic to Migrate CUDA Code to oneAPI Adapting NVI...

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IEEE International Conference on Cluster Computing Workshops and Posters (CLUSTER WORKSHOPS)

作者： Wentao Liang Norihisa Fujita Ryohei Kobayashi Taisuke Boku Master's Program in Computer Science Degree Program in Systems and Information Engineering Graduate School of Science and Technology University of Tsukuba Center for Computational Sciences University of Tsukuba

ISBN: (数字)9798350383454

ISBN: (纸本)9798350383461

Nowadays, the use of accelerators in high performance computing has become more common than ever before. The most used accelerators must be the Graphics Processing Unit (GPU). It has emerged as an important component in most of the parallel computing scenarios, surpassing the capabilities of the traditional Central Processing Unit (CPU) in perspective of both performance and energy efficiency.

关键词： Codes Conferences High performance computing Graphics processing units Cluster computing Parallel processing Energy efficiency Central Processing Unit

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Elementary science classroom learning with wireless response devices - Implementing active and experiential learning

Elementary science classroom learning with wireless response...

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IEEE International Workshop on Wireless and Mobile Technologies in Education, WMTE 2005

作者： Chen, Yu-Fen Liu, Chen-Chung Yu, Ming-Hung Chang, Sung-Bin Lu, Yun-Chen Chan, Tak-Wai Dept. of Computer Science Information Engineering National Central University Taiwan Graduate Institute of Network Learning Technology National Central University Taiwan Degree Program of E-Learning College of Science National Chiao Tung University Taiwan Chu-Wei Elementary School Taiwan

ISBN: (纸本)0769523854

Active learning enables learners to actively engage in learning. Learning not only transfers material to students for learning, but also encourages greater mental engagement and more extensive student-student and student-instructor interaction than does a typical lecture class. Peer Instruction (PI) engages students in active learning by achieving continuous instructor-student interaction in a physics lecture. However, the methodologies and the effectiveness of implementing PI for elementary school students have seldom been clarified. This study explores the possibility of adopting PI in an elementary science classroom. The research considerations of the study are as follows: (1) how wireless technology can enhance PI in elementary science classroom;(2) how a teacher can engage students in pre-class reading, and (3) whether elementary school students have sufficient social skills to perform a PI discussion? These questions are examined by observing how the PI pedagogical model worked with a wireless response system in elementary science classroom. Based on the observation, this study also proposes a way of improving the PI learning experience of elementary school students by adding experiments and observations during peer discussion to explain concepts and phenomena in physics. © 2005 IEEE.

关键词： Learning systems

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Effect of reordering internal messages in MPI broadcast according to the load imbalance

Effect of reordering internal messages in MPI broadcast acco...

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2008 International Workshop on Innovative Architecture for Future Generation High Performance Processors and systems, IWIA'08

作者： Soga, Takesi Nanri, Takeshi Kurokawa, Motoyoshi Murakami, Kazuaki Institute of Systems Information Technologies and Nanotechnologies Fukuoka Japan Research Institute for Information Technology Kyushu Univ. Fukuoka Japan Advanced Center for Computing and Communication RIKEN Wako Japan Graduate School of Information Science and Electrical Engineering Kyushu Univ. Fukuoka Japan

ISBN: (纸本)9780769537702

To achieve higher scalability of parallel programs on large scale parallel computers, reducing the time spent for collective communications is one of the most important issue. In this paper, a dynamic optimization method to adjust the implementation of Broadcast operation, one of the most popular collective communications, is introduced. Though there have been many attempts to speed up this operation, they assume that each rank starts this operation at the same time. However, in real execution, the time can be different because of load-imbalance among ranks. This paper first claims that this difference can cause increase of the cost for this operation. Then, as a method to avoid this problem, an optimization method that adjusts the order of point-to-point messages in Broadcast operations is introduced. This method uses the wait time of each rank at the operation to determine the status of load-imbalance. From the results of experiments, it is shown that this optimization method can reduced the time for the operation. In addition to that, it is also shown that the effect of the optimization depends on the size of data to be broadcasted and the amount of load-imbalance. © 3770 IEEE.

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