研究紹介
ジオソーシャルデータ分析アルゴリズム、ソーシャルデータの観光応用、Web技術を用いたデータ可視化
| 専門・研究分野 | データ工学・データ科学 |
|---|---|
| 最終学歴・学位 | 東京都立大学大学院 工学研究科 電気工学専攻 博士後期課程 修了 博士（工学）, 2006年03月. |
| 研究テーマ | 全世界・全方位時空間データにおける情報の偏在性と遍在性の研究 |
| 研究キーワード | 時空間情報処理、ソーシャルビッグデータ、 |
| 研究業績・著書・論文、その他それに準じる業績 | ・Junyu Xiao, Shohei Yokoyama, “Enhancing Temporal Stability in Small Object Detection: A Post-processing Approach for YOLOv8”, 21st International Conference on Computer Vision Theory and Applications (VISAPP2026), Marbella, Spain, 2026.3.9-11 ・Eiki Soeta, Shohei Yokoyama, “EmojiMap: Toward Multi-Feature Geographic Visualization with Social Media Data”, The 17th International Conference on Management of Digital EcoSystems (MEDES’25), Ho Chi Minh, Viet Nam, 2025.11.25 ・Simon Crepin, Shohei Yokoyama, “Hybridization of Metaheuristic and Multi-Agent System for solving the tourist trip design problem: A literature review”, The 1st International Workshop on Generative and Agentic AI for Multi-Modality Space-Time Intelligence, Minneapolis, MN, USA, 2025.11.03 ・Natsuki Tsutsui, Shohei Yokoyama, “Navigating Points of Interest: The Dog-Walker Pathfinding Algorithm”, 12th International Conference on Geographical Information Systems Theory, Applications and Management, Porto, Portugal, 2025.4.1-3 ・Hiroki Oda, Shohei Yokoyama, “Person Identification and Position Estimation with Multiple Moving Spherical Cameras”, The 22nd International Conference on Advances in Mobile Computing & Multimedia Intelligence (MoMM2024), Bratislava Slovakia, 2024.12.2-4 ・Takuro Ohashi, Shohei Yokoyama, “Efficient moving object detection from Ultra-High Resolution omnidirectional video”, The 22nd International Conference on Advances in Mobile Computing & Multimedia Intelligence (MoMM2024), Bratislava Slovakia, 2024.12.2-4 ・Kento Yano, Shohei Yokoyama, “Whose smartphone? Pairing each individual in the panoramic video with their respective smartphone”, The 16th International Conference on Management of Digital EcoSystems (MEDES’24), Naples, Italy, 2024.11.20 ・Naoki Kitamura, Shohei Yokoyama, “Detecting Human-Human Interaction using Smartphons”, 4th International Conference on Computer Communication and Information Systems (CCCIS 2024), Virtual Conference, 2024.02.27-29 ・Ahmed Almohanadi, Shohei Yokoyama, “Emoji Trends Between Abnormal Usage and Cultural Differences: A Case Study of Emojis” The Thirteenth International Conference on Social Media Technologies, Communication, and Informatics (SOTICS2023), Valencia Spain, 2023.11.15 ・Ahmed Almohanadi, Shohei Yokoyama, “Emotion Mapping: Sentiment Analysis using Emoji in Twitter Data from Japan in the COVID-19 Era”, International Symposium on Foundations and Applications of Big Data Analytics (FAB2023), Pain Bay Resort, Kusadasi, Turkey, 2023.11.07 ・Osei Yamashita, Shohei Yokoyama, “Preference Aware Route Recommendation Using One Billion Geotagged Tweets”, 6th ACM SIGSPATIAL Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising (LocalRec 2022), Seattle USA, 2022.11.01 ・Natsuki Fujiwara, Shohei Yokoyama, “Ownership Protection of Specified Image Data Using Blockchain Technology”, The 14th International Conference on Management of Digital EcoSystems (MEDES’22), Venice Italy, 2022.10.20 ・Uyou Cyou, Shohei Yokoyama, Shingo Otsuka, “Weather Information Acquisition System using Small Wireless Microcomputers and Environmental Sensors for Agricultural Sector.”, 2021 International Conference on Computational Science and Computational Intelligence (CSCI), Las Vegas, NV, USA, 2021 ・Yuki Kasahara, Shohei Yokoyama, “Real-time Queue Detection Using an Omnidirectional Camera.”The 23rd International Conference on Information Integration and Web Intelligence(iiWAS2021), Linz, Austria, 29 November 2021 - 1 December 2021. ・Junya Masuda, Kazuma Hayashida, Shohei Yokoyama, “Position Estimation for Objects in the High Latitude Region of 360° Panoramic Images”, The 13th International Conference on Management of Digital EcoSystems (MEDES’21), Hammamet Tunisia (Virtual Event), 2021.11.03 ・Hayashida, Kazuma, Junya Masuda, and Shohei Yokoyama, “Real-Time Human Detection Using Spherical Camera for Web Browser-Based Telecommunications”, The 13th International Conference on Management of Digital EcoSystems (MEDES’21), Hammamet Tunisia (Virtual Event), 2021.11.1 ・Shohei Yokoyama, “Efficient Crawling of Georeferenced Documents from Large Web Map Services”, Korea-Japan (Japan-Korea) Database Workshop 2020, Yeosu World Exhibition Center(Yeosu, Korea) - Online, 2020.11.20 ・Sou Ijima, Masaharu Hirota, Shohei Yokoyama, “A Crawling Method with No Parameters for Geo-Social Data based on Road Maps”, The 21st International Conference on Information Integration and Web-based Applications & Services(iiWAS2019), Holiday Inn Munich(Munich, Germany), 2019.12.03 ・Shohei Yokoyama, Sou Ijima, “Towards Efficient Crawling of Georeferenced Documents from Location-based Social Networks”, The 11th International Conference on Management of Digital EcoSystems (MEDES’19), Miramare Hotel (Limassol, Cyprus), 2019.11.12 ・Chinnapong Angsuchotmetee, Richard Chbeir, Yudith Cardinale, Shohei Yokoyama, “A Pipelining-based Framework for Processing Events in Multimedia Sensor Networks”, The 33rd ACM/SIGAPP Symposium On Applied Computing (SAC 2018), Palais Beaumont (Pau, France), 2018.04.09 ・Chinnapong Angsuchotmetee, Richard Chbeir, Yudith C. Cardinale, Shohei Yokoyama, “A Dynamic Event Detection Framework for Multimedia Sensor Networks”, the 23rd Asia-Pacific Conference on Comunications (APCC2017), The University Club (Perth Australia) 2017.12.12 ・Sayaka Tohyama, Yoshiaki Matsuzawa, Shohei Yokoyama, Teppei Koguchi, Yugo Takeuchi, “Constructive Interaction on Collaborative Programming: Case Study for Grade 6 Students Group”, IFIP World Conference on Computers in Education (WCCE 2017), Dublin Castle Conference Centre (Dublin Ireland), 2017.07 ・Shiori Kikuchi, Ryuhei Yamada, Yukio Yamamoto, Masaharu Hirota, Shohei Yokoyama, Hiroshi Ishikawa, “Classification of Unlabeled Deep Moonquakes Using Machine Learning”, Special Track on Social and Big Data collocated with the Ninth International Conferences on Advances in Multimedia,Novotel Venezia Mestre Castellana (Venice Italy) 2017.4.25 ・Kodai Kato, Ryuhei Yamada, Yukio Yamamoto, Masaharu Hirota, Shohei Yokoyama, Hiroshi Ishikawa, “Analysis of Spatial and Temporal Features to Classify the Deep Moonquake Sources Using Balanced Random Forest”, Special Track on Social and Big Data collocated with the Ninth International Conferences on Advances in Multimedia,Novotel Venezia Mestre Castellana (Venice Italy) 2017.4.25 ・Keisuke Mitomi, Masaki Endo, Masaharu Hirota, Shohei Yokoyama, Yoshiyuki Shoji and Hiroshi Ishikawa, “How to find accessible Free Wi-Fi at Tourist Spots in Japan”, 8th International Conference on Social Informatics (SocInfo2016), Meydenbauer Center (Bellevue, WA, USA), 2016.11.17. ・Masaki Kanno, Yo Ehara, Masaharu Hirota, Shohei Yokoyama, and Hiroshi Ishikawa, “Visualizing High-Risk paths using Geo-tagged Social Data for Disaster Mitigation”, 9th ACM SIGSPATIAL International Workshop on Location-Based Social Networks (LBSN16), San Francisco Airport Marriott Waterfront (California, USA), 2016.10.31 ・Ágnes Bogárdi-Mészöly, András Rövid, Shohei Yokoyama, “Time Trend Analysis of Scenic Leaves and Blossoms Viewing Places”, The 4th IIAE International Conference on Intelligent Systems and Image Processing 2016(ICISIP2016). Kyoto International Community House(Kyoto) . 2016.09.11 ・Yuya Nozawa, Masaki Endo,Yo Ehara, Masaharu Hirota, Shohei Yokoyama, Hiroshi Ishikawa, “Inferring Tourist Behavior and Purposes of a Twitter User”, Artificial Intelligence for Tourism (AI4Tourism), Hilton Phuket Arcadia Resort & Spa (Phuket Thailand), 2016.08.23 ・Ágnes Bogárdi-Mészöly, András Rövid, Shohei Yokoyama, “Detect Scenic Leaves and Blossoms Viewing Places from Flickr Based on Social and Image Features”, 1st International Conference on Social Informatics and Systems Science (SISS2016), Kumamoto City International Center (Kumamoto), 2016.07.12 ・Hiroshi Ishikawa, Masaki Endo, Iori Sugiyama, Masaharu Hirota, Shohei Yokoyama, “Can three-month time-series data of views or downloads predict the highly-cited academic papers in open access journals?”, International Workshop on Informatics (IWIN2015), 2015.09 ・Shohei Yokoyama, Ágnes Bogárdi-Mészöly, Hiroshi Ishikawa. “ EBSCAN: An Entanglement-based Algorithm for Discovering Dense Regions in Large Geo-social Data Streams with Noise”, 8th ACM SIGSPATIAL International Workshop on Location-Based Social Networks (LBSN 2015), Hyatt Regency Bellevue Hotel(Seattle, Washington, USA), 2015.11.03 ・Ágnes Bogárdi-Mészöly, András Rövid, Shohei Yokoyama, “Performance Prediction of Web-Based Software Systems with Subspace Identification”, The 4 th International Scientific Conference on Engineering and Applied Sciences, Loisir Hotel Naha (Naha Okinawa Japan), 2015.07.29 ・Ágnes Bogárdi-Mészöly, András Rövid, Shohei Yokoyama, “Subspace Identification for Web-Based Software Systems”, The 5th International Conference on Engineerig and Applied Sciences (ICEAS 2015), Sapporo Renaissance Hotel(Hokkaido Japan), 2015.07.20 ・Masaharu Hirota(首都大学東京), Masaki Endo(首都大学東京), Shohei Yokoyama and Hiroshi Ishikawa(首都大学東京), “ Visualizing Shooting Spots using Geo-tagged Photographs from Social Media Sites”, 15th international conference on extraction and knowledge management (EGC 2015),ルクセンブルグ, 2015.01.27-30 ・Hirotaka Oba, Masaharu Hirota(首都大学東京), Richard Chbeir(IUT de Bayonne et du Pays Basque), Hiroshi Ishikawa(首都大学東京), and Shohei Yokoyama, “Towards Better Land Cover Classification Using Geo-Tagged Photographs”, IEEE International Symposium on Multimedia (ISM2014), 台湾・台中,2014.12.10 ・Masaki Omori, Masaharu Hirota, Hiroshi Ishikawa(首都大学東京), Shohei Yokoyama, “Can Geo-tags on Flickr Draw Coastlines?”, International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2014), 米国・ダラス, 2014.11.05 ・Masaharu Hirota, Motohiro Shirai, Hiroshi Ishikawa and Shohei Yokoyama, “Detecting Relations of Hotspots using Geo-tagged Photographs in Social Media Sites”, First international acm workshop on managing and mining enriched geo-spatial data In conjunction with ACM SIGMOD/PODS 2014, Snowbird USA, 2014.06.27 ・Motohiro Shirai, Masaharu Hirota, Hiroshi Ishikawa and Shohei Yokoyama, “A method of area of interest and shooting spot detection using geo-tagged photographs”, ACM SIGSPATIAL Workshop on Computational Models of Place 2013 at ACM SIGSPATIAL GIS 2013, Orlando USA, 2013.11.5 ・Yasumichi Goto, Ryuhei Yamada, Yukio Yamamoto, Shohei Yokoyama, Hiroshi Ishikawa, “SOM-based Visualization for Classifying Large-scale Sensing Data of Moonquakes”, 4th International Workshop on Streaming Media Delivery and Management Systems, Compienue France, 2013.10.30 ・Motohiro Shirai, Masaharu Hirota, Shohei Yokoyama, Naoki Fukuta, Hiroshi Ishikawa, “Discovering Multiple HotSpots using Geo-tagged Photographs”, 20th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, Redondo Beach USA, 2012.11.8 ・Masaharu Hirota, Shohei Yokoyama, Naoki Fukuta, Hiroshi Ishikawa, “Reranking Image Search Result Based On Photographic Quality Assessment Without Image Features”, IADIS International Conference WWW/Internet 2012, Madrid Spain, 2012.10.18 ・Masaharu Hirota, Naoki Fukuta, Shohei Yokoyama, Hiroshi Ishikawa:“Implementing Constraint-based Clustering for a Photo Search System Using Estimated Metadata”,2nd International Symposium on Applied Informatics, ISAI2011, Yamagata Japan, 2011.8.9 ・Shohei Yokoyama, Hiroshi Ishikawa, “Parallel Distributed Rendering of HTML5 Canvas Elements”, Proceedings of The Eleventh International Conference on Web Engineering (ICWE 2011), Lecture Notes in Computer Science , Vol. 6757, Springer, pp.331-345,Pafos Cyprus, 2011.6.24 ・Manami Harazaki, Joe Tekli, Shohei Yokoyama, Naoki Fukuta, Richard Chbeir and Hiroshi Ishikawa, “XBeGene: Scalable XML Documents Generator By Example Based on Real Data”, Proceedings(CD-ROM) of IEEE International Conference on Data Engineering and Internet Technology (DEIT 2011),Bali Indonesia, 2011.3.17 ・Shohei Yokoyama, Hiroshi Ishikawa, “Creating Decomposable Web Applications on High-resolution Tiled Display Walls”, Proceedings of the IADIS International Conference on WWW/Internet, pp.151-158 (ICWI2010), Timisoara Romania, 2010.10.16 ・Akihiro Okamoto, Shohei Yokoyama, Naoki Fukuta, Hiroshi Ishikawa, “Proposal of Spatiotemporal Data Extraction and Visualization System Based on Wikipedia for Application to Earth Science”, Akihiro Okamoto, Shohei Yokoyama, Naoki Fukuta, Hiroshi Ishikawa, 9th Proceedings of IEEE/ACIS International Conference on Computer and Information Science (ICIS 2010) (Special Session), Yamagata Japan, pp.651-656, 2010.8.19. ・Masaharu Hirota, Shohei Yokoyama, Naoki Fukuta, Hiroshi Ishikawa, “Constraint-based Clustering of Image Search Results Using Photo Metadata and Low-level Image Features”, Proceedings of 9th IEEE/ACIS International Conference on Computer and Information Science (ICIS 2010) (Special Session), Yamagata Japan, pp.165-178, 2010.8.19 ・Shohei Yokoyama, Isao Kojima, Hiroshi Ishikawa, “FREDDY: A Web Browser-friendly Lightweight Data-Interchange Method Suitable for Composing Continuous Data Streams”, Proceedings of First International Workshop on Lightweight Integration on the Web (ComposableWeb 2009), San Sebastian Spain, pp.39-50, 2009 ・Shohei Yokoyama, Manabu Ohta, Kaoru Katayama, Hiroshi Ishikawa, , “An Access Control Method Based on the Prefix Labeling Scheme for XML Repositories”, Proceedings of the 16th Australasian Database Conference, New Castle Australia, pp.105-113, 2005 ・Hiroshi Ishikawa, Shohei Yokoyama, Manabu Ohta, Kaoru Katayama, “On Mining XML Structures Based on Statistics”, Proceedings of 9th International Conference on Knowledge-Based & Intelligent Information & Engineering Systems, Springer-Verlag Lecture Notes in Artificial Intelligence, vol.3681, pp.379-390, 2005 ・Hiroshi Ishikawa, Manabu Ohta, Shohei Yokoyama, Takuya Watanabe, Kaoru Katayama, “Active Knowledge Mining for Intelligent Web Page Management”, Proceedings of International Conference on Knowledge-Based & Intelligent Information & Engineering Systems (KES 2003), pp.975-983, 2003 ・Hiroshi Ishikawa, Manabu Ohta, S Yokoyama, Takuya Watanabe, Kaoru Katayama, “Toward Active Web Usage Mining for Page Recommendation and Restructuring”, Proceedings of International Conference on Knowledge Management(I-KNOW ‘03), pp.492-499, 2003 ・Hiroshi Ishikawa, Manabu Ohta, Shohei Yokoyama, Takuya Watanabe, Kaoru Katayama, “Web Usage Mining for Actionable Knowledge”, Proceedings of International Workshop on Data Mining for Actionable Knowledge (DMAK’2003) in conjunction with PAKDD’2003, 2003 ・Hiroshi Ishikawa, Toshiyuki Nakajima, Tokuyo Mizuhara, Shohei Yokoyama, Junya Nakayama, Manabu Ohta, Kaoru Katayama, “An Intelligent Web Recommendation System: A Web Usage Mining Approach”, Proceedings of International Symposium on Methodologies for Intelligent Systems (ISMIS 2002), pp. 342-350, 2002 ・Hiroshi Ishikawa, Manabu Ohta, Shohei Yokoyama, Junya Nakayama, Kaoru katayama,, “On The Effectiveness of Web Usage Mining for Page Recommendation and Restructuring”, Proceedings of 2nd Annual International Workshop of the Working Group “Web and Databases” of the German Informatics Society, pp. 253-267, 2002 ・Hiroshi Ishikawa, Shohei Yokoyama, Seiji Isshiki, Manabu Ohta, “On Business Modeling, Distributed Processing, and Data Compression for E-Commerce”, Proceedings of International Conference on Internet and Multimedia Systems and Applications 2001 (IMSA2001), pp.193-198, 2001 ・Hiroshi Ishikawa, Shohei Yokoyama, Seiji Isshiki, Manabu Ohta, “Project Xanadu: XML- and Active-Database-Unified Approach to Distributed E-Commerce”, Proceedings of 12th International Workshop on Database & Expert Systems Applications, pp. 833-837, 2001 ・Hiroshi Ishikawa, Shohei Yokoyama, Manabu Ohta, “An XML-Based Approach to Web-Commerce: Business Modeling, Distributed Processing, and Data Compression”, Proceedings of 1st International Workshop on Multimedia Laboratory over Internet (web公開), 2001. |
| 受 賞 | 若手功績賞、令和2年5月 日本データベース学会 優秀プレゼンテーション賞, 平成14年5月 電子情報通信学会 第13回データ工学ワークショップ 優秀プレゼンテーション賞および優秀論文賞, 平成17年3月 電子情報通信学会 第17回データ工学ワークショップ |
| 主な学会活動 | ・都立大発ベンチャーNPO法人クラウド技術者養成協会 理事長 ・日本データベース学会 理事 ・電子情報通信学会 データ工学研究専門委員会委員 ・情報処理学会論文誌データベース 服編集委員長 その他、研究会・国際会議のプログラム委員等 |
| 社会等との関わり | JAVADA クラウドコンピューティング職種分科会長として、職人の世界大会とも呼ばれるWorldSkillsにおいて、クラウドコンピューティング日本代表の選考に携わる。またWorldSkills2026上海大会において技術オブザーバ、WorldSkills2028愛知大会においてワークショップマネージャーを務め、イベントの準備・運営に携わる。 |
| 個人のURL | ― |
| 担当科目 |
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| オフィスアワー | ― |
| 研究室 | 日野キャンパス 1号館 242号室 |
| 内線番号 | ― |
| メールアドレス | ― |
| 研究室サイト等 | https://tmu.yokoyama.ac/ |