Search Results 1-20 of 767

  • Relationship between proportional relationship in stationary probabilities and analogical reasoning  [in Japanese]

    KAMEI Akimichi , HIDAKA Shohei , TAKUMA Torii

    <p>近年自然言語処理では単語埋め込みモデルが,類推課題等の意味認知課題での好成績を根拠として,単語の意味的表現として標準的に用いられている.こうした単語埋め込みモデルの意味課題における性能についての理論的分析を行った研究では,単語埋め込みによる次元圧縮が重要であると考えられてきた.本研究では,この仮説を再考し,単語埋め込みをせずとも,その元データである共起確率行列に潜在する統計的性質 …

    Proceedings of the Annual Conference of JSAI JSAI2020(0), 4Rin101-4Rin101, 2020

    J-STAGE 

  • Design of Search Space for Improving the Steady Current Control Performance of PMSM Current Control System based on Model Predictive Control  [in Japanese]

    Shimaoka Masahiro , Doki Shinji

    … <p>This paper proposes a method to design the search space of Model Predictive Control (MPC) for improving the steady current control performance of Permanent Magnet Synchronous Motor (PMSM) current control system. … This is because the search space of basic MPC represented by voltage vectors is not suitable appropriate for PMSM current control. …

    IEEJ Transactions on Industry Applications 140(6), 468-479, 2020

    J-STAGE 

  • LS-SVM Based Modeling and Model Predictive Control for a Water-Hydraulic Artificial Muscle Actuator

    KAWAHARA Yuta , KOSAKI Takahiro , LI Shigang

    … This paper proposes a modeling approach for a water-hydraulic AMA based on least squares support vector machines (LS-SVMs). … Modeling tests are carried out on this LS-SVM approach with experimentally acquired data and show that the proposed model can capture the hysteretic characteristics of the water-hydraulic AMA. …

    SICE Journal of Control, Measurement, and System Integration 13(3), 114-121, 2020

    J-STAGE 

  • A Null-space Compensation Control for 2-input Redundant Plant Based on Model Reference Adaptive Control  [in Japanese]

    KAWAGUCHI Natsuki , SATO Takao , ARAKI Nozomu , ASAMI Toshihiko , KURODA Masaharu

    … <p>In this paper, we propose a null-space compensation control for linear first-order systems with redundant two input channels. … In the input redundant systems, control input vector generally has null-space component of the plant parameter vector. … The null-space component does not contribute to the generation of the control force which drives the plant state. …

    Transactions of the Society of Instrument and Control Engineers 56(5), 293-298, 2020

    J-STAGE 

  • New Mathematical Model and Vector Simulator of Synchronous Reluctance Motor with Space-Varying Inductances  [in Japanese]

    Shinnaka Shinji

    … <p>This paper proposes a new mathematical model and simulator for synchronous reluctance motors, which generate torque ripples depending on the rotor position. … The proposed model has the following advantages. … (d) It presents a new "inductance differential torque" that is directly related to the space-variable inductance, and can reproduce the torque ripples. … specified by the model. …

    IEEJ Transactions on Industry Applications 140(4), 327-339, 2020

    J-STAGE 

  • UMMS: Efficient Superpixel Segmentation Driven by a Mixture of Spatially Constrained Uniform Distribution

    WANG Pengyu , ZHU Hongqing , CHEN Ning

    … <p>A novel superpixel segmentation approach driven by uniform mixture model with spatially constrained (UMMS) is proposed. … Under this algorithm, each observation, i.e. pixel is first represented as a five-dimensional vector which consists of colour in CLELAB space and position information. …

    IEICE Transactions on Information and Systems E103.D(1), 181-185, 2020

    J-STAGE 

  • Application of word2visualvec to Estimation of Malware Subspecies  [in Japanese]

    横瀬 謙信 , 大久保 潤

    コンピュータセキュリティシンポジウム2019論文集 (2019), 1047-1051, 2019-10-14

    IPSJ 

  • VERIFICATION OF INFLUENCE OF EVALUATION INDEX AND OPTICAL PROPERTY ON OPTIMAL OPENING PLACEMENT FOR DAYLIGHTING DESIGN  [in Japanese]

    HIYAMA Kyosuke , HASEGAWA Ryota , KIYONO Arata

    … Moreover, space brightness affected by light reflection on walls and a ceiling is becoming popular to evaluate indoor light environment, while the conventional indexes focus on virtual horizontal surface at the desktop height. … First, a case study using a model with clear glass windows is performed to check the influence. … On the other hand, the optimal placements become relatively low height when luminous radiance as an index related to space brightness is used. …

    Journal of Environmental Engineering (Transactions of AIJ) (764), 937-945, 2019-10

    J-STAGE  AIJ 

  • Accelerating universe with a stable extra dimension in cuscuton gravity

    Ito Asuka , Sakakihara Yuki , Soda Jiro

    … A cuscuton which is a nondynamical scalar field is responsible for the accelerating expansion, and a vector field makes the extra dimensional space stable. … Remarkably, the accelerating universe in our model is not exactly de Sitter. …

    Physical Review D 100(6), 063531, 2019-09-23

    IR 

  • A Model for Integrated Analysis of Website and User by Gaussian Embedding  [in Japanese]

    保坂 大樹 , 河部 瞭太 , 山下 遥 , 後藤 正幸

    近年,消費者のWebサイト閲覧行動は重要なマーケティング分析の対象となっている.サイトの閲覧行動を分析することで,サイト間の関係性やユーザの嗜好を把握し,Web広告の掲載やメールの配信などのマーケティング施策の最適化や効率化が可能となるためである.しかし,蓄積されたWeb閲覧履歴データ中のサイトやユーザの関係性は複雑であり,サイト単位やユーザ単位の分析が困難となる場合が多い.したがって,そのような …

    情報処理学会論文誌 60(8), 1390-1402, 2019-08-15

    IPSJ 

  • Search for large missing transverse momentum in association with one top-quark in proton-proton collisions at √s = 13 TeV with the ATLAS detector

    原 和彦 , 大川 英希 , 佐藤 構二 , 受川 史彦 , ATLAS Collaboration , Kazuhiko HARA , Hideki OKAWA , Koji SATO , Fumihiko UKEGAWA

    … The obtained results are interpreted in the context of simplified models for dark-matter production and for the single production of a vector-like T quark. … In the absence of significant deviations from the Standard Model background expectation, 95% confidence-level upper limits on the corresponding production cross-sections are obtained and these limits are translated into constraints on the parameter space of the models considered. …

    Journal of high energy physics 2019(5), 41, 2019-05

    IR 

  • Holographic computation of quantum corrections to the bulk cosmological constant

    Aoki Sinya , Balog Janos , Yokoyama Shuichi

    … We compute the vacuum expectation value of the Einstein operator at the next-to-leading order in the 1/n expansion using a free O(⁠n⁠) vector model. … We interpret the next-to-leading correction as the quantum correction to the cosmological constant of the anti-de Sitter space. …

    Progress of Theoretical and Experimental Physics 2019(4), 2019-04

    IR 

  • A Personal Conversation Assistant Based on Seq2seq with Word2vec Cognitive Map

    Shen Maoyuan

    … Our system will have a cognitive map based on the word2vec model, which is used to learn and store the relationship of each word that appears in the chatting records. … Each word will be mapped to a continuous high dimensional vector space. … Meanwhile, the traditional one-hot embedding layer will be replaced with our word2vec embedding layer in the seq2seq model. …

    法政大学大学院紀要. 情報科学研究科編 (14), 1-6, 2019-03-31

    IR  DOI 

  • Detecting flow regime changes from the spatial RGB distribution of turbid water images using a three-dimensional vector space model  [in Japanese]

    IGARASHI Kazuhide , MIZUTANI Tasuku , KINOSHITA Atsuhiko , IBUKA Shinji , HIGO Akihide , IKESHIMA Tsuyoshi , AKITA Hiromi , MIZUNO Hideaki

    … <p>In this report, we introduce a new method for automatically detecting flow-regime changes using unit vectors and the normal unit vector of RGB values from camera imagery. …

    Journal of the Japan Society of Erosion Control Engineering 71(6), 28-34, 2019

    J-STAGE 

  • Design of Flight Control System for Experimental Winged Rocket During Powered Ascent  [in Japanese]

    SUGIMACHI Tomonori , YONEMOTO Koichi , FUJIKAWA Takahiro

    … <p>Kyushu Institute of Technology has been developing experimental winged rocket for fully reusable space transportation system since 2005. … WIRES#015, the subscale flight model of suborbital vehicle will be launched from Mojave Desert, California in 2020. … The LOX-LNG engine employed for this vehicle has thrust vector control (TVC) system to improve the control performance during the ascent phase when dynamic pressure is still low. …

    The Proceedings of Conference of Kyushu Branch 2019.72(0), C24, 2019

    J-STAGE 

  • Applying the document vector model to tour recommendation

    Hayashi Takahiro

    … The user's interest in tours is extracted from a review and it is modelled as a document vector based on the Word2Vec model. … Interest matching between the user and other travellers is performed based on the vector space model. … The proposed system is tested on a data set including 259,084 tour reviews and compared with a conventional recommendation system which is based on the BoW (bag-of-words) model. …

    Journal of Global Tourism Research 4(1), 15-20, 2019

    J-STAGE 

  • INTEGRATING OF ACTIVITY-BASED SIMULATION AND OBSERVATION DATA FOR ESTIMATION OF DETAILED TRAVEL BEHAVIOR  [in Japanese]

    布施 孝志 , 原田 遼

    個人移動の把握のため,パーソントリップ調査や非集計交通行動モデルの開発が行われてきた.本研究では,個人の1日の活動全体を詳細に表現できるアクティビティモデルと,動的な交通状況の再現が可能な交通データの両者を統合することにより,現況に即した個人の移動の再現を目的とする.状態空間モデルにおいて,個人位置を状態ベクトルとして表現し,観測データから得られるゾーン滞留人口を観測ベクトルとして定義する.システ …

    Journal of Japan Society of Civil Engineers, Ser. D3 (Infrastructure Planning and Management) 75(5), I_575-I_583, 2019

    J-STAGE 

  • A STUDY ON METHOD FOR SUBDIVISION OF VISUAL AREA UNITS FOR ANALYZING GEOMETRIC APPEARANCE FEATURE  [in Japanese]

    HIROSE Hiroki , SHIMOKAWA Yuichi , FUKUMOTO Daisuke

    … Although physical models or perspective images are used to confirm the appearance of space in general, these methods can be said to be sensory and qualitative evaluation methods. …

    Journal of Architecture and Planning (Transactions of AIJ) 84(765), 2467-2477, 2019

    J-STAGE 

  • A Cooperative Framework Based on Active and Semi-supervised Learning for Sea Ice Classification using EO-1 Hyperion Data

    HAN Yanling , ZHAO Yao , ZHANG Yun , WANG Jing , YANG Shuhu , HONG Zhonghua , CAO Shouqi

    … In the SSL part, we utilize the SSL sampling strategy to choose the unlabeled samples with the most information and little redundancy, and use the transductive support vector machine (TSVM) as the classification model. …

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 62(6), 318-330, 2019

    J-STAGE 

  • Scalable Community Identification with Manifold Learning on Speaker I-Vector Space

    WANG Hongcui , LIU Shanshan , JIN Di , LI Lantian , DANG Jianwu

    … Recent works have shown that there was an underlying manifold on which speaker utterances live in the model-parameter space. … However, most speaker clustering methods work on the Euclidean space, and hence often fail to discover the intrinsic geometrical structure of the data space and fail to use such kind of features. …

    IEICE Transactions on Information and Systems E102.D(10), 2004-2012, 2019

    J-STAGE 

Page Top