検索結果 2677件中 1-20 を表示

  • Low-Cost and Steady On-Line Retraining of MLP with Guide Data

    Yuya Kaneda , Qiangfu Zhao , Yong Liu

    … To upgrade performance of DBM-initialized models, we may use all observed data to retrain the model, but the computational cost is high. … To reduce the cost, we may use the newly observed datum only, but this often degrades the performance of the model. …

    情報処理学会論文誌 58(8), 2017-08-15

    情報処理学会

  • Computational cost reduction by avoiding ray-linking iteration in bent-ray method for sound speed image reconstruction in ultrasound computed tomography

    Qu Xiaolei , Azuma Takashi , Lin Hongxiang , Nakamura Hirofumi , Tamano Satoshi , Takagi Shu , Umemura Shin-ichiro , Sakuma Ichiro , Matsumoto Yoichiro

    Bent-ray reconstruction method can improve sound speed image quality, compared with straight-ray reconstruction. However, it suffers from time-consuming ray-linking iteration, because multiple rays wi …

    Jpn. J. Appl. Phys. 56(7S1), 07JF14, 2017-06-14

    応用物理学会

  • POD & MLSM Application on DU96-W180 Wind Turbine Airfoil

    Halawa Amr M. , Elhadidi Basman , Yoshida Shigeo

    … namely Proper Orthogonal Decomposition (POD) was applied in conjunction with the Modified Linear Stochastic Measurement (MLSM) to achieve a reduced order model with high accuracy and low computational cost. … This application is important in reducing the computational time from several hours to just few seconds for applications involving recursive solution of the Navier-Stokes equations. …

    Evergreen : joint journal of Novel Carbon Resource Sciences & Green Asia Strategy 4(1), 36-43, 2017-03

    機関リポジトリ

  • モバイルセンサデータベースにおける効率的なTop-k検索結果の多様化手法

    横山 正浩 , 原 隆浩

    … In this case, the computational cost of a naive method is excessively high when the amount of mobile sensor data is very large. … Experimental results show that our proposed method involves short computation time and reduces the disk IO cost. …

    情報処理学会論文誌 58(2), 481-494, 2017-02-15

    情報処理学会

  • 高圧力下における珪酸塩融体の大規模・非経験的分子動力学シミュレーションの必要性

    則竹 史哉

    … However, the strong finite size effect does not allow the application of first-principles molecular dynamics simulations because of its heavy calculation cost, because the system composed of at least 10<sup>4</sup> …

    高圧力の科学と技術 27(3), 198-204, 2017

    DOI

  • rPM6 Parameters for Manganese and Application to Transition State Search for Oxidation Reactions of Cyclohexene by Manganese(IV)-Oxo Species

    Saito Toru , Takano Yu

    … The spin-unrestricted calculations with the resultant parameter sets (UrPM6) successfully provide acceptable TS structures similar to the UDFT-optimized geometries at much lower computational cost. … Our method will lead to substantial savings of computational time spent in the TS search for transition-metal-containing species.</p> …

    Chemistry Letters 46(10), 1567-1569, 2017

    DOI

  • Efficient Similarity Search with a Pivot-Based Complete Binary Tree

    YAMAGISHI Yuki , AOYAMA Kazuo , SAITO Kazumi , IKEDA Tetsuo

    … Experimental results on one million real image data set with high dimensionality demonstrate that the proposed method finds an exact solution for a range query at around one-quarter to half of the computational cost of one of the state-of-the-art methods, by using a CBT index constructed off-line at a reasonable computational cost.</p> …

    IEICE Transactions on Information and Systems E100.D(10), 2526-2536, 2017

    DOI

  • 反復構造を持つ高分子に対する分子動力学計算のためのパラメータ設定支援プログラムo2pの開発

    矢部 誠 , 園部 智彩 , 上田 一義 , 武田 穣

    <p>Molecular dynamics (MD)の実行に必須の結合角や電荷などのパラメータセット(力場)がライブラリに存在しない場合,力場の量子力学計算による算出やパラメータ自動生成ツールの活用という手法が用いられる.しかし,これらの手法は原子数の多い高分子の場合には適していない.そこで,3つの単位構造(両末端の単位と中央部の繰り返し単位)を含むオリゴマーの力場を …

    Journal of Computer Chemistry, Japan 16(3), 63-69, 2017

    DOI

  • 効率的な尤度場地図生成法とそれを用いた高速スキャンマッチング

    松永 充弘 , 中澤 和夫

    … However, the computational cost of scan match is higher because searching nearest neighbor need a large amount of computational resources. …

    日本機械学会論文集 83(853), 17-00016-17-00016, 2017

    DOI

  • High-precision positioning considering vibration and disturbance suppression in piezo-driven stage systems

    SEKI Kenta , NODA Daisuke , IWASAKI Makoto

    … Although various types of modeling and model-based approaches have been proposed to compensate for the nonlinearities, these approaches have limitations such as substantial modeling complexity, time-consuming modeling process, and high computational cost required for their evaluation and implementation. …

    Journal of Advanced Mechanical Design, Systems, and Manufacturing 11(3), JAMDSM0039-JAMDSM0039, 2017

    DOI

  • 効率的な尤度場地図生成法とそれを用いた高速スキャンマッチング

    松永 充弘 , 中澤 和夫

    … However, the computational cost of scan match is higher because searching nearest neighbor need a large amount of computational resources. …

    日本機械学会論文集, 2017

    DOI

  • COMBINE解析法を用いたHuman Leukocyte Antigenと抗原ペプチドの親和性予測法の研究

    中村 真也 , 大村 理恵 , 仲西 功

    ペプチドワクチン療法は、人間が本来持つ免疫の力でがん細胞を攻撃し、排除するというがん免疫療法の一つである。この治療法では、投与されたペプチド断片ががん細胞のマーカーとしてヒト白血球抗原(HLA)に結合して提示され、この複合体をT細胞受容体が認識してがん特異的キラーT細胞が活性化されることで、がん細胞を攻撃する。T細胞受容体は多種多様な抗原に応答できるように無数に存在するが、HLAは各個人に固有の配 …

    CBIジャーナル 17(0), 93-102, 2017

    DOI

  • Quantification of Human Stress Using Commercially Available Single Channel EEG Headset

    MUHAMMAD UMAR SAEED Sanay , MUHAMMAD ANWAR Syed , MAJID Muhammad

    … Consequently, when low beta wave is used as a feature with the Naive Bayes algorithm for classification of stress level, it not only reduces the computational cost by 7 folds but also improves the accuracy to 71.4%.</p> …

    IEICE Transactions on Information and Systems E100.D(9), 2241-2244, 2017

    DOI

  • Iteration-Free Bi-Dimensional Empirical Mode Decomposition and Its Application

    TITIJAROONROJ Taravichet , WORARATPANYA Kuntpong

    … Although modified BEMDs are proposed in several approaches, computational cost and quality of their bi-dimensional intrinsic mode function (BIMF) still require an improvement. …

    IEICE Transactions on Information and Systems E100.D(9), 2183-2196, 2017

    DOI

  • パラメトリック曲面として記述された極小曲面の形態創生手法

    藤田 慎之輔 , 寒野 善博 , 大崎 純

    … If the triangulation is made finer, a minimal surface with higher precision can be obtained, but the computational cost increases and the obtained minimal surface becomes a collection of enormous nodal information. … Method 1 requires high computational cost in order to get a solution with sufficient accuracy.<br> · …

    日本建築学会構造系論文集 82(738), 1299-1307, 2017

    DOI

  • 反復構造を持つ高分子に対する分子動力学計算のためのパラメータ設定支援プログラムo2pの開発

    矢部 誠 , 園部 智彩 , 上田 一義 , 武田 穣

    <p>Molecular dynamics (MD)の実行に必須の結合角や電荷などのパラメータセット(力場)がライブラリに存在しない場合,力場の量子力学計算による算出やパラメータ自動生成ツールの活用という手法が用いられる.しかし,これらの手法は原子数の多い高分子の場合には適していない.そこで,3つの単位構造(両末端の単位と中央部の繰り返し単位)を含むオリゴマーの力場を …

    Journal of Computer Chemistry, Japan, 2017

    DOI

  • 経験的台風モデルにより推算された風場の補正法の構築

    井手 喜彦 , 山上 澪 , 山城 賢 , 橋本 典明

     台風時高潮数値シミュレーションの外力として使用される風場は,よく経験的台風モデルあるいは局地気象モデルによって作成される.経験的台風モデルは,計算コストが低いが,地形の影響を考慮できず計算精度が低い.一方,局地気象モデルは地形の影響を考慮でき高精度な結果を得ることができるが,計算コストが高く,仮想的な台風の作成は難しい.そこで,経験的台風モデルによって求めた風場を局地気象モデルの結果と比較し補正 …

    土木学会論文集B3(海洋開発) 73(2), I_144-I_149, 2017

    DOI

  • Wideband Adaptive Beamforming Algorithm for Conformal Arrays Based on Sparse Covariance Matrix Reconstruction

    CHEN Pei , HU Dexiu , ZHAO Yongjun , LIU Chengcheng

    … Then, a sparse reconstruction method is utilized to reduce the high computational cost and the requirement of sampling data. … A novel cost function is formulated by the focusing matrix and singular value decomposition. …

    IEICE Transactions on Communications, 2017

    DOI

  • Low-Cost and Steady On-Line Retraining of MLP with Guide Data

    Kaneda Yuya , Zhao Qiangfu , Liu Yong

    … To upgrade performance of DBM-initialized models, we may use all observed data to retrain the model, but the computational cost is high. … To reduce the cost, we may use the newly observed datum only, but this often degrades the performance of the model. … For the guide data, around 5 data are usually enough to upgrade the performance steadily, and thus the computational cost is basically not increased compared with the BP.</p> …

    Journal of Information Processing 25(0), 820-830, 2017

    DOI

  • Low-Complexity Hybrid Precoding Design for MIMO-OFDM Millimeter Wave Communications

    DONG Yue , CHEN Chen , YI Na , GAO Shijian , JIN Ye

    … <p>Hybrid analog/digital precoding has attracted growing attention for millimeter wave (mmWave) communications, since it can support multi-stream data transmission with limited hardware cost. … Simulation results show that the proposed hybrid precoding can approach the performance of unconstrained fully-digital precoding but with low hardware cost and computational complexity.</p> …

    IEICE Transactions on Communications E100.B(8), 1228-1237, 2017

    DOI

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