Search Results 1-20 of 9885

  • Region-based Detection of Essential Differences in Image-based Visual Regression Testing

    Haruto Tanno , Yu Adachi , Yu Yoshimura , Katsuyuki Natsukawa , Hideya Iwasaki

    … Existing image-based VRT systems simply compare two images in pixel units and highlight pixels with differences, so if there are changes that affect the entire screen (e.g., parallel movements of screen elements), a large number of unessential differences are detected, and the essential differences are buried within them. … By observing these views, the tester can efficiently identify the essential differences even when there are changes that affect the entire screen, e.g., parallel movements of screen elements. …

    情報処理学会論文誌 61(4), 2020-04-15

    IPSJ 

  • Orientation Measurement by Using Inertial Measurement Sensor for Freehand 3D Ultrasound  [in Japanese]

    小野木 真哉 , オノギ シンヤ , Shinya Onogi

    … To address the issue, orientation measurement by a low-cost inertial measurement sensor and highspeed volume construction using parallel computing technology by a graphics processing unit were proposed. …

    福岡工業大学総合研究機構研究所所報 (2), 105-109, 2020-04-03

    IR 

  • Accelerated FDPS: Algorithms to use accelerators with FDPS

    Iwasawa Masaki , Namekata Daisuke , Nitadori Keigo , Nomura Kentaro , Wang Long , Tsubouchi Miyuki , Makino Junichiro

    … We describe algorithms implemented in FDPS (Framework for Developing Particle Simulators) to make efficient use of accelerator hardware such as GPGPUs (general-purpose computing on graphics processing units). … We have developed FDPS to make it possible for researchers to develop their own high-performance parallel particle-based simulation programs without spending large amounts of time on parallelization and performance tuning. …

    Publications of the Astronomical Society of Japan 72(1), 13, 2020-02

    IR 

  • Design and Implementation of Relocatable Distributed Collection Consisting of Subarrays Having Arbitrary Index Ranges  [in Japanese]

    鎌田 十三郎 , 高橋 俊行

    分散並列環境において不規則な計算を扱う場合,しばしばデータの再配置が必要となる.各要素が各計算時点でどの計算ノードのどのアドレスに配置されているか管理するのは,開発者にとって面倒な作業である.本発表では,連続要素群を配列単位で登録・管理可能で,かつ領域単位の再配置が可能な分散集合ライブラリの提案とその実装法について紹介する.対象言語には,APGAS型並列プログラミング言語X10を利用する.要素群は …

    情報処理学会論文誌プログラミング(PRO) 13(1), 21-21, 2020-01-29

    IPSJ 

  • Scheduling Computation Graphs of Deep Learning Frameworks for Multi-core CPUs  [in Japanese]

    樋口 兼一 , 田浦 健次朗

    Chainerを始めとする多くの深層学習フレームワークは,ニューラルネットワークに含まれる層ごとの処理をノード,各層間の接続関係をエッジとした計算グラフを内部的に構築し,各ノードを逐次に実行することによりネットワークの学習を行う.そのようなフレームワークにおけるホットスポットは各ノード内部の処理であり,既存の研究・実装はノード単位の高速化に焦点を当ててきた.しかし,広く用いられているネットワークモ …

    情報処理学会論文誌プログラミング(PRO) 13(1), 20-20, 2020-01-29

    IPSJ 

  • A Parallel Ad-hoc Data Processing System for Large Text Data Based on Operator Precedence Grammar  [in Japanese]

    リュウ ケイコウ , 田浦 健次朗

    アドホックなデータ向けのパーサジェネレータは,逐次に動くパーサを生成するものが多く,プロセッサの計算資源を十分に利用できず,大規模なデータを効率良く解析できない.OPGは,local parsabilityと呼ばれる,入力の途中から構文解析を始めることができるという性質を持ち,文法中にある演算子に着目して考案された形式文法である.OPGを使った既存のパーサジェネレータの実装であるPAPAGENOは …

    情報処理学会論文誌プログラミング(PRO) 13(1), 19-19, 2020-01-29

    IPSJ 

  • Centaurus: A Just-in-time Parallel-parser Generator for Ad Hoc Data Processing

    Shigeyuki Sato , Hiroka Ihara , Kenjiro Taura

    … To support a lightweight ad hoc data processing, we present Centaurus, a just-in-time parallel-parser generator library. … By generating native scannerless LL(*) parsers dynamically, our library enables us to process input data in parallel merely by calling Python functions with LL(*) grammars and Python actions. … To support a lightweight ad hoc data processing, we present Centaurus, a just-in-time parallel-parser generator library. …

    情報処理学会論文誌プログラミング(PRO) 13(1), 18-18, 2020-01-29

    IPSJ 

  • FPGA-based Stream Data Aggregation for Large Sliding-Windows  [in Japanese]

    大坂 誠樹 , 吉見 真聡 , 策力木格 , 吉永 努

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 119(371), 141-146, 2020-01-22

  • Design of Datapath for 8-bit Parallel SFQ Microprocessor with Gate-Level Pipelines

    Kashima Ryota , Nagaoka Ikki , Tanaka Masamitsu , Sano Kyosuke , Yamashita Taro , Fujimaki Akira

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 119(369), 5-9, 2020-01-16

  • FPGA-Based Implementation of Finite Set-MPC for a VSI System Using XSG-Based Modeling

    Singh Vijay Kumar , Tripathi Ravi Nath , Hanamoto Tsuyoshi

    … Field programmable gate array (FPGA) is an alternative and exciting solution for real-time implementation because of the parallel processing capability, as well as, discrete nature of the hardware platform. …

    Energies 13(1), 260-1-260-18, 2020-01-04

    IR 

  • Many-to-many Voice Conversion based on a CycleGAN using a Radial Loss  [in Japanese]

    SALAMA Iskandar

    … It's one of applications of voice processing that depends on both signal processing and machine learning to achieve it.</i><i> …

    Proceedings of the Annual Conference of JSAI JSAI2020(0), 2K4ES203-2K4ES203, 2020

    J-STAGE 

  • Flow Analysis and Approximate Expressions of Factors Related to Frictional Loss for Laminar Flow of Viscoplastic Fluids through a Concentric Annulus  [in Japanese]

    HATAKEYAMA Nobuo , SHIMIZU Yoshiyuki , MASUYAMA Tadashi

    … Also, in the field of well drilling, the flow through a concentric annulus is conventionally approximated by the flow between two parallel plates. … That is, using the results of circular pipe and parallel-plate, an approximate expression of viscosity factor in viscoplastic fluid flow through concentric annuli is derived and the error of the average wall shear-stress represented by the approximate equation is evaluated. …

    Journal of MMIJ 136(5), 40-51, 2020

    J-STAGE 

  • Numerical Simulation of Aerosol Coagulation by LD Method  [in Japanese]

    FUJIMOTO Toshiyuki

    … 度定数は,Flux Matching法(Fuchs (1964))によって得られる凝集速度関数と比較して若干小さくなり,Fuchsの行った仮定が完全には正しくないことが示唆された.また,粒子の凝集成長による粒子径分布の変化をモデル化するために,画像処理ユニット(Graphics Processing Unit)を用いて科学技術計算を行うGPGPUにより,より大規模な並列計算を行い,多数の粒子の運動を同時に計算することで,凝集速度定数を算出した.</p> …

    Hosokawa Powder Technology Foundation ANNUAL REPORT 27(0), 87-93, 2020

    J-STAGE 

  • A Digital Perspective on Machine Tool Calibration

    Montavon Benjamin , Dahlem Philipp , Peterek Martin , Schmitt Robert H.

    … Utilizing different Internet of Production architectures and platforms, a multitude of parallel analytic applications and an evaluation of complex models are enabled owing to the availability of ample computing resources, among which the machine tool's numerical controller takes the role of an edge-device injecting the feedback into the production process. …

    International Journal of Automation Technology 14(3), 360-368, 2020

    J-STAGE 

  • Initial Study of Neuromorphic Application for Vision-Based Navigation

    KARIYA Kazuki , FUKUDA Seisuke

    … The navigation technique requires onboard and real-time image processing algorithms performing image recognition, feature extraction, matching, tracking, etc. … However, despite the demand for fast image processing task, space-grade computers have been slower than commercial ones, lagging behind them by 1-2 orders of magnitude in performance. … The neuromorphic processor chip operates asynchronously and in parallel mimicking neuro-biological architecture like our brain. …

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 18(3), 108-115, 2020

    J-STAGE 

  • Region-based Detection of Essential Differences in Image-based Visual Regression Testing

    Tanno Haruto , Adachi Yu , Yoshimura Yu , Natsukawa Katsuyuki , Iwasaki Hideya

    … Existing image-based VRT systems simply compare two images in pixel units and highlight pixels with differences, so if there are changes that affect the entire screen (e.g., parallel movements of screen elements), a large number of unessential differences are detected, and the essential differences are buried within them. … By observing these views, the tester can efficiently identify the essential differences even when there are changes that affect the entire screen, e.g., parallel movements of screen elements. …

    Journal of Information Processing 28(0), 268-278, 2020

    J-STAGE 

  • A Parameter Fitting Method for Digital Spiking Silicon Neuron Model

    NANAMI Takuya

    <p>シリコン神経ネットワークは神経系を模倣する電子回路システムであり,神経系の情報処理を高い電力効率で実現する為,次世代人工知能の基盤技術として,近年注目を集めている.シリコン神経ネットワークは神経細胞の挙動を再現するシリコンニューロンから構成されるが,我々はこれまでの研究で,少ない消費回路リソースで多種多様な神経細胞クラスを忠実に再現するDigital Spiking Silico …

    SEISAN KENKYU 72(2), 103-109, 2020

    J-STAGE 

  • An Implementation of a Vehicle Path Planner C/GMRES to Accelerate Processing in Multi-core ECU  [in Japanese]

    Sakata Kosuke , Yuno Tsuyoshi , Ono Takatsugu , Kawabe Taketoshi

    本研究では軌道計画の手法の一つとして, Kamalらの実時間最適化(C/GMRES) (7)に注目した. C/GMRESを用いれば一定時間将来にわたる自車状態および外界環境の予測に基づき任意の指標を最適化する軌道を生成することができるため, 自動運転の安全性の向上や省燃費化などの効果が期待できる. ただしC/GMRESは車載計算機に実装するには効率よく計算するための対策を行う必要がある. 以上の背 …

    Transactions of Society of Automotive Engineers of Japan 51(3), 497-502, 2020

    J-STAGE 

  • Design and Implementation of 10Gbps Software PPPoE Router for IoT Smart Home Network

    DU Ping , NAKAO Akihiro , MIKI Satoshi , INOUE Makoto

    … The data plane is implemented over FLARE-DPDK platform, where we get packets from physical network interfaces directly bypassing Linux kernel and distribute packets to multiple CPU cores for data processing in parallel. …

    IEICE Transactions on Communications E103.B(4), 422-430, 2020

    J-STAGE 

  • Realization of 3-Degree-of-Freedom Control using Fine-Grain Parallel Processing  [in Japanese]

    Kurumatani Hiroki , Katsura Seiichiro

    <p>The paper reports a sprout of 3-degree-of-freedom (DOF) control. The limitation of feedback control including 2-DOF control has been raised for a long time; however, a suitable control theory …

    IEEJ Transactions on Industry Applications 140(3), 220-229, 2020

    J-STAGE 

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