Xanadu: XML- and Active-Database-Unified Approach to Distributed E-Commerce. - Hiroshi Ishikawa 004; Shohei Yokoyama; Seiji Isshiki; Manabu Ohta (DEXA Workshop, 2001)

On Business Modeling, Distributed Processing, and Data Compression for E-Commerce. - Hiroshi Ishikawa 004; Shohei Yokoyama; Seiji Isshiki; Manabu Ohta (IMSA, 2001)

An Intelligent Web Recommendation System: A Web Usage Mining Approach. - Hiroshi Ishikawa 004; Toshiyuki Nakajima; Tokuyo Mizuhara; Shohei Yokoyama; Junya Nakayama; Manabu Ohta; Kaoru Katayama (ISMIS, 2002)

On the Effectiveness of Web Usage Mining for Page Recommendation and Restructuring. - Hiroshi Ishikawa 004; Manabu Ohta; Shohei Yokoyama; Junya Nakayama; Kaoru Katayama (Web, Web-Services, and Database Systems, 2002)

Web usage mining approaches to page recommendation and restructuring. - Hiroshi Ishikawa 004; Manabu Ohta; Shohei Yokoyama; Junya Nakayama; Kaoru Katayama (Intell. Syst. Account. Finance Manag., 2002)

Active Knowledge Mining for Intelligent Web Page Management. - Hiroshi Ishikawa 004; Manabu Ohta; Shohei Yokoyama; Takuya Watanabe 005; Kaoru Katayama (KES, 2003)

An Access Control Method Based on the Prefix Labeling Scheme for XML Repositories. - Shohei Yokoyama; Manabu Ohta; Kaoru Katayama; Hiroshi Ishikawa 004 (ADC, 2005)

On Mining XML Structures Based on Statistics. - Hiroshi Ishikawa 004; Shohei Yokoyama; Manabu Ohta; Kaoru Katayama (KES (1), 2005)

Design Principles and IT Overviews of the GEO Grid. - Satoshi Sekiguchi; Yoshio Tanaka; Isao Kojima; Naotaka Yamamoto; Shohei Yokoyama; Yusuke Tanimura; Ryosuke Nakamura; Koki Iwao; Satoshi Tsuchida (IEEE Syst. J., 2008)

Proposal of Spatiotemporal Data Extraction and Visualization System Based on Wikipedia for Application to Earth Science. - Akihiro Okamoto; Shohei Yokoyama; Naoki Fukuta; Hiroshi Ishikawa 004 (ACIS-ICIS, 2010)

Constraint-Based Clustering of Image Search Results Using Photo Metadata and Low-Level Image Features. - Masaharu Hirota; Shohei Yokoyama; Naoki Fukuta; Hiroshi Ishikawa 004 (Computer and Information Science, 2010)

Parallel Distributed Rendering of HTML5 Canvas Elements. - Shohei Yokoyama; Hiroshi Ishikawa 004 (ICWE, 2011)

Discovering multiple HotSpots using geo-tagged photographs. - Motohiro Shirai; Masaharu Hirota; Shohei Yokoyama; Naoki Fukuta; Hiroshi Ishikawa 004 (SIGSPATIAL/GIS, 2012)

A Robust Clustering Method for Missing Metadata in Image Search Results. - Masaharu Hirota; Naoki Fukuta; Shohei Yokoyama; Hiroshi Ishikawa 004 (J. Inf. Process., 2012)

SOM-Based Visualization for Classifying Large-Scale Sensing Data of Moonquakes. - Yasumichi Goto; Ryuhei Yamada; Yukio Yamamoto; Shohei Yokoyama; Hiroshi Ishikawa 004 (3PGCIC, 2013)

A method of Area of Interest and Shooting Spot Detection using Geo-tagged Photographs. - Motohiro Shirai; Masaharu Hirota; Hiroshi Ishikawa 004; Shohei Yokoyama (COMP@SIGSPATIAL, 2013)

Can geo-tags on flickr draw coastlines? - Masaki Omori; Masaharu Hirota; Hiroshi Ishikawa 004; Shohei Yokoyama (SIGSPATIAL/GIS, 2014)

Towards Better Land Cover Classification Using Geo-tagged Photographs. - Hirotaka Oba; Masaharu Hirota; Richard Chbeir; Hiroshi Ishikawa 004; Shohei Yokoyama (ISM, 2014)

Detecting Relations of Hotspots using Geo-tagged Photographs in Social Media Sites. - Masaharu Hirota; Motohiro Shirai; Hiroshi Ishikawa 004; Shohei Yokoyama (GeoRich@SIGMOD, 2014)

Visualizing Shooting Spots using Geo-tagged Photographs from Social Media Sites. - Masaharu Hirota; Masaki Endo; Shohei Yokoyama; Hiroshi Ishikawa 004 (EGC, 2015)

EBSCAN: An Entanglement-based Algorithm for Discovering Dense Regions in Large Geo-social Data Streams with Noise. - Shohei Yokoyama; Ágnes Bogárdi-Mészöly; Hiroshi Ishikawa 004 (LBSN@SIGSPATIAL/GIS, 2015)

Visualizing High-Risk Paths using Geo-tagged Social Data for Disaster Mitigation. - Masaki Kanno; Yo Ehara; Masaharu Hirota; Shohei Yokoyama; Hiroshi Ishikawa 004 (LBSN@SIGSPATIAL/GIS, 2016)

Detect Scenic Leaves and Blossoms Viewing Places from Flickr Based on Social and Image Features. - Ágnes Bogárdi-Mészöly; András Rövid; Shohei Yokoyama (IIAI-AAI, 2016)

Inferring Tourist Behavior and Purposes of a Twitter User. - Yuya Nozawa; Masaki Endo; Yo Ehara; Masaharu Hirota; Shohei Yokoyama; Hiroshi Ishikawa 004 (PRICAI Workshops, 2016)

How to Find Accessible Free Wi-Fi at Tourist Spots in Japan. - Keisuke Mitomi; Masaki Endo; Masaharu Hirota; Shohei Yokoyama; Yoshiyuki Shoji; Hiroshi Ishikawa 004 (SocInfo (1), 2016)

A dynamic event detection framework for multimedia sensor networks. - Chinnapong Angsuchotmetee; Richard Chbeir; Yudith Cardinale; Shohei Yokoyama (APCC, 2017)

Constructive Interaction on Collaborative Programming: Case Study for Grade 6 Students Group. - Sayaka Tohyama; Yoshiaki Matsuzawa; Shohei Yokoyama; Teppei Koguchi; Yugo Takeuchi (WCCE, 2017)

A pipelining-based framework for processing events in multimedia sensor networks. - Chinnapong Angsuchotmetee; Richard Chbeir; Yudith Cardinale; Shohei Yokoyama (SAC, 2018)

A Crawling Method with No Parameters for Geo-social Data based on Road Maps. - Sou Ijima; Masaharu Hirota; Shohei Yokoyama (iiWAS, 2019)

Towards Efficient Crawling of Georeferenced Documents from Location-based Social Networks. - Shohei Yokoyama; Sou Ijima (MEDES, 2019)

Weather Information Acquisition System using Small Wireless Microcomputers and Environmental Sensors for Agricultural Sector. - Uyou Cyou; Shohei Yokoyama; Shingo Otsuka (CSCI, 2021)

Real-time Queue Detection Using an Omnidirectional Camera. - Yuki Kasahara; Shohei Yokoyama (iiWAS, 2021)

Real-Time Human Detection Using Spherical Camera for Web Browser-Based Telecommunications. - Kazuma Hayashida; Junya Masuda; Shohei Yokoyama (MEDES, 2021)

Position Estimation for Objects in the High Latitude Region of 360° Panoramic Images. - Junya Masuda; Kazuma Hayashida; Shohei Yokoyama (MEDES, 2021)

Preference aware route recommendation using one billion geotagged tweets. - Osei Yamashita; Shohei Yokoyama (LocalRec@SIGSPATIAL, 2022)

Ownership Protection of Specified Image Data Using Blockchain Technology. - Natsuki Fujiwara; Shohei Yokoyama (MEDES, 2022)

Foreword. - Shohei Yokoyama (IEICE Trans. Inf. Syst., 2022)

Emotion Mapping: Sentiment Analysis using Emoji in Twitter Data from Japan in the COVID-19 Era. - Ahmed Almohanadi; Shohei Yokoyama (ASONAM, 2023)

Ownership protection system for partial areas on image data using ethereum blockchain. - Natsuki Fujiwara; Shohei Yokoyama (Comput. Sci. Inf. Syst., 2023)

Person Identification and Position Estimation with Multiple Moving Spherical Cameras. - Hiroki Oda; Shohei Yokoyama (iiWAS (2), 2024)

Efficient Moving Object Detection from Ultra-High Resolution Omnidirectional Video. - Takuro Ohashi; Shohei Yokoyama (MoMM, 2024)

Navigating Points of Interest: The Dog-Walker Pathfinding Algorithm. - Natsuki Tsutsui; Shohei Yokoyama (GISTAM, 2025)