Faculty Profiles - SOGA Masato

Published Papers - SOGA Masato

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New Training Method for Non-dominant Hand Pitching Motion based on Reversal Trajectory of Dominant Hand Pitching Motion using AR and Vibration

Masato SOGA, Taiki MORI （Part： Lead author,　Corresponding author )

IEICE TRANSACTIONS on Information and Systems Vol.E106-D ( No.5 ) 1049 - 1058 2023.05 [Refereed]

Investigation of the Influence of Social Rank and Spatial Arrangement Using the Psychophysical Experiments

Toshitaka Higashino, Yasushi Naruse, Masato Soga

Procedia Computer Science ( Elsevier B.V. ) 96 1740 - 1747 2016

According to social rank, high rank people are located "Up" and low rank people are located "Low". "Up" and "Low" are concept of spatial arrangement. However, they are used as metaphors to represent the social rank. This study describes psychophysical experiments to confirm whether there is a link between the "Up and Low" of the spatial arrangement and "High and Low" of the social rank. In the experiments, two randomly words from three words that have social ranks were shown to subjects vertically on the display. We taught the subjects a target word at the beginning of the experiments. We asked the subjects to check whether the target word appears. If the target word appeared, subjects pressed the button as soon as possible. We obtained reaction times of the button press by psychophysical experiments. We assumed a linear model that contains three elements: "Time which differs between the target word", "Time which differs between the spatial arrangement of the words to be presented", "Time which differs between the social rank". The results show that the reaction time in case that social rank coincides with spatial arrangement is significantly shorter than the reaction time in case that social rank does not coincide with spatial arrangement.

DOI

Development of a learning environment for novices' erhu playings

Fumitaka Kikukawa, Masato Soga, Hirokazu Taki

Workshop Proceedings of the 22nd International Conference on Computers in Education, ICCE 2014 ( Asia-Pacific Society for Computers in Education ) 814 - 819 2014

In this paper, we describe the development of a learning environment for novices' erhu playings. In case of self-learning, the novices who want to learn playing bowed string instruments give up because they get into a wrong habit and don't understand how to play. Therefore, our goal is to develop a learning environment for novices. We focus on the erhu in bowed string instruments. The system we developed diagnoses finger positions and bow strokes by using magnetic position sensors and gives awareness of errors by showing finger positions and bow strokes on virtual 3D space. In case of bow strokes, the system shows how to improve bow strokes by using arrows. Moreover, the system shows how and where the errors occur on score. Accordingly, the novices can recognize and improve their errors by using this system. In future works, we will conduct evaluation experiments to disclose learning effects by using this system.

Electroencephalogram analysis of pseudo-haptic application for skill learning support system

Hirokazu Miura, Keijiro Sakagami, Yuki Seto, Shumpei Ako, Hirokazu Taki, Noriyuki Matsuda, Masato Soga

Workshop Proceedings of the 21st International Conference on Computers in Education, ICCE 2013 ( UHAMKA PRESS ) 217 - 222 2013

This paper describes the brain states analysis of pseudo-haptic application for the skill learning supporting system. The pseudo-haptic is a phenomenon in which the human perceives force by according differences between his/her real motion and its visual feedback. It is difficult to evaluate human cognition of haptic state only from the observation of human behavior. Therefore, to measure the biological signal of the brain, we have used electroencephalogram. We have evaluated the brain activity in the sensing tasks in order to make a comparison among the several states of the sensing of pseudo-haptic.

Real-world oriented mobile constellation learning environment using gaze pointing

Masato Soga, Masahito Ohama, Yosikazu Ehara, Masafumi Miwa

IEICE Transactions on Information and Systems ( Institute of Electronics, Information and Communication, Engineers, IEICE ) E94-D ( 4 ) 763 - 771 2011 [Refereed]

We developed a real-world oriented mobile constellation learning environment. Learners point at a target constellation by gazing through a cylinder with a gyro-sensor under the real starry sky. The system can display information related to the constellation. The system has original exercise functions which are not supported by existing systems or products by other research group or companies. Through experimentation, we evaluated the learning environment to assess its learning effects. © 2011 The Institute of Electronics, Information and Communication Engineers.

DOI

過疎地域の防災力向上と活性化のための情報通信環境の開発

豊増伸治,曽我真人

日本災害情報学会誌 ( 日本災害情報学会 ) No.8 ( 8 ) 86-94 - 95 2010.03 [Refereed]

Real time interpolation of haptic information using case base

Takayuki Toki, Hirokazu Taki, Hirokazu Miura, Noriyuki Matsuda, Masato Soga, Norihiro Abe

Proceedings of the 15th International Symposium on Artificial Life and Robotics, AROB 15th'10 1006 - 1009 2010

This paper has described a real time interpolation technology for haptic information using case base. To share haptic data in multiple points, we must send complete haptic data. However, in the transmission line, packet loss and noise are occurred sometimes. In this situation, users don't sense correct force. We developed new interpolation method for haptic sense data without conventional mathematical approach. We can interpolate haptic information lag and loss using case-based approach. In our method, the system selects a suitable case and reconfigures it to fit the error. © 2010 ISAROB.

Development of real-world oriented mobile constellation learning environment using gaze pointing

Masahito Ohama, Yoshikazu Ehara, Masato Soga, Masafumi Miwa

Proceedings of the 18th International Conference on Computers in Education: Enhancing and Sustaining New Knowledge Through the Use of Digital Technology in Education, ICCE 2010 384 - 391 2010

The planetary simulator for understanding planetary phenomena by multiple viewpoints

Masato Soga, Kohe Tokoi, Yasunori Nakanishi

Int. J. Advanced Intelligence Paradigms, Vol. 1, No. 2, 2008 211-223 - 223 2009.03 [Refereed]

Sketch learning environment with diagnosis and drawing guidance from rough form to detailed contour form

Masato Soga, Shota Kuriyama, Hirokazu Taki

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 5940 129 - 140 2009 [Refereed]

We developed a sketch learning environment with a diagnosis function and the ability to guide drawing from a rough form to detail a detailed contour form. We use a cup and a dish as motifs. When a learner uses the environment, the system first requires the learner to draw a circumscribed-rectangle of the motif's view on paper. Then, the system diagnoses the circumscribed-rectangle and advises the learner if it has errors. The system guides the learner from a rough form to a detailed contour form by repeatedly drawing circumscribed- rectangles. We evaluated the environment and confirmed a significant learning effect. © 2009 Springer-Verlag.

DOI

デッサン描画中に描画領域に依存したアドバイスを提示するデッサン学習支援環境

曽我真人, 松田憲幸, 瀧寛和

人工知能学会論文誌, Vol. 23, No. 3 ( The Japanese Society for Artificial Intelligence ) 23 ( 3 ) 96-104 - 104 2008.03 [Refereed]

Skill, such as arts, sports and crafts, is regarded as a cycle that consists of the following three steps: recognition of objects, selection of appropriate action series and execution of the action. In arts and crafts, people produce works as a result of this cycle. Skill-learning environment should involve diagnosis-function providing appropriate advice for each step. This paper describes technique that is providing advice in real time when a learner learns recognition of drawing. To assist learners' recognition, we developed the sketch-area-dependent advising system that presents advice with voice for learners' drawing. The effectiveness of advice was confirmed through an experiment evaluating proposed technique.

DOI

鉛筆デッサンが表す写実誤りの三次元モデルによる顕在化

松田憲幸,高木佐恵子,曽我真人,堀口知也,平嶋宗,瀧寛和,吉本富士市

電子情報通信学会論文誌D Vol.J91-D, No.2 J91-D ( 2 ) 324-332 2008.02 [Refereed]

学習者の腕動作のアニメーション機能を持つデッサン腕動作リアルタイム診断助言システムの構築

曽我真人,前野浩孝,古賀俊廣,和田隆人,松田憲幸,高木佐恵子,瀧寛和,吉本富士市

教育システム情報学会誌 Vol.24, No.4 ( 教育システム情報学会編集事務局 ) 24 ( 4 ) 311-322 - 322 2007.10 [Refereed]

スキルの学習支援と学習支援環境

曽我真人、瀧寛和、松田憲幸、高木佐恵子、吉本富士市

人工知能学会誌 Vol.20 No.5 ( 人工知能学会 ) 20 ( 5 ) 533-540 - 540 2005.09

身体知研究の潮流 -身体知の解明に向けて-

古川康一, 植野研, 尾崎知伸, 神里志穂子, 川本竜史, 渋谷恒司, 白鳥成彦, 諏訪正樹, 曽我真人, 瀧寛和, 藤波努, 堀聡, 本村陽一, 森田想平(ただし第二著者以降は50音順)

人工知能学会論文誌Vol.20,No.2 117-128 2005.02 [Refereed]

初心者のための基礎的鉛筆デッサン学習支援システム

高木佐恵子, 松田憲幸, 曽我真人, 瀧寛和, 志磨隆, 吉本富士市

画像電子学会誌, 第32巻第4号 32 ( 4 ) pp. 386-396 - 396 2003.08 [Refereed]

絵画は,心を豊かにするための重要な研究テーマの1 つである.これまで,絵画に関する多くの研究では,実際の画材を再現するような機能を提供するばかりで,ユーザが描いた絵を評価し,アドバイスを与えるようなものはなかった.そこで,我々は,初心者のための基礎的な鉛筆デッサンの学習支援システムを提案する.提案システムは,モチーフに関するデータとユーザが鉛筆で画用紙に描いたデッサンの画像を入力とし,ユーザへのアドバイスを出力とする.提案システムでは,次の4つの機能により,処理が行われる: モチーフの特徴解析,デッサンの特徴解析,誤りの同定,アドバイスの生成と提示.提案システムの有効性を確かめるため,扱う対象を基礎的なモチーフに対する主要なアドバイスに限定したプロトタイプシステムを開発し,実験を行った.その結果,提案システムの有効性が確かめられた.

Development of Interactive Remote Telescope System and Experimental Class in Germany using Time Difference

SOGA Masato, OKYUDO Masami, TOYOMASU Shinji, TANAKA Toshinari, TANAKA Hideaki, SAKAMOTO Makoto, YADOMARU Yasushi, HARADA Norito, IMAKI Toshihiro, MAKINO Mitsuo, WATANABE Kenji

教育システム情報学会誌 Vol.18, No.3・4 ( 教育システム情報学会事務局 ) 18 ( 3 ) 410 - 418 2001.11 [Refereed]

和歌山県みさと天文台の105cm望遠鏡を用いて、インターネット経由で世界中どこからでもWeb上に構築したGUIから望遠鏡をコントロールでき、天体のライブ映像が見れるインタラクティブリモート望遠鏡システムを構築した。ライブ映像配信型インタラクティブリモート望遠鏡としては、構築当初の1997年は世界初の試みである。2000年の2月にドイツのフランクフルト日本人学校に赴き、そこからみさと天文台のリモート望遠鏡を用いて、授業実験をおこない、システムの評価を行った。ドイツが13～15時の時間帯に、日本は21～23時の夜であり、時差を利用することにより、夜の天体を昼の授業時間帯に見せることが可能となり、天文学習に観察学習を取り入れることが可能になる。授業をアンケート形式で評価を行った。

空欄補充問題を用いたプログラム理解支援

柏原昭博,曽我真人,豊田順一

教育システム情報学会誌 15 ( 5 ) pp.129-138 - 138 1998.10 [Refereed]

本論文では,プログラム理解学習において,空欄補充問題がプログラム理解に有効であることを論じている.空欄補充問題は,プログラム中の空欄の設定の仕方によって学習者の負荷が変化するが,2つの空欄の間の関係を3つの要素に分類し,その要素数の大小によって,負荷の大きさが決まるという仮説を立て,それを実験で検証している.その実験結果から,主空欄と副空欄の枠組みを提唱し,空欄補充問題の作成指針について明かにしている.

群化に基づく図形パターンの階層表現の生成手法

曽我真人,新田祐介,今中武,豊田順一,柳田益造

電子情報通信学会論文誌, Vol.J75-D-II, No.2 ( 電子情報通信学会情報・システムソサイエティ ) 75 ( 2 ) pp.275-287 - 287 1992.02 [Refereed]

家紋やマークなどの構造を持つ図形パターンを対象とした画像データベースにおいて,ヒューマン・インタフェースを考慮した類似検索を可能にするため,画像データの検索キーの生成に,人間の視覚特性である群化を取り入れ,図形パターンの階層表現を生成する手法について論じた.また,試作システムを通じて手法の妥当性を検証した.従来の類似検索では,図形パターンにメッシュを切り,その特徴量間の類似度を定義して,検索を行うのが普通で,人間の視覚特性は取り入れられていなかった.本論文では,視覚特性を取り入れることにより,より人間の感覚に近い類似検索の手法を提案した.

感性情報を扱うためのPrologとニューラルネットワークの結合 - Neuro-Prolog/IIの作成 -

今中武,曽我真人,上原邦昭,豊田順一

人工知能学会誌,Vol.6, No.2 pp.260-270 1991.11 [Refereed]

本論文では,論理的情報と感覚的情報の表現と処理手法について提案し,試作システムNeuro-Prolog/II を用いて有効性を実証した.本システムは,感覚情報の推論を扱うために3層型ニューラルネットを用い,論理的情報の推論を扱うためにPrologを用いている.感覚的情報の推論と論理的推論とを統一的な記法で扱えるように新しい記述子を提案している.これにより,従来は記述できなかった推論が扱えるようになっている.

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Published Papers - SOGA Masato