| 2018 | AVI | Visual insight of spatiotemporal IoT-generated contents. | Jun Lee, Kyoung-Sook Kim, Ryong Lee, Sang-Hwan Lee |
| 2018 | PIMRC | Classification of Urban Districts based on Road-centric Crowd Movements. | Ryong Lee, Jun Lee, Kyoung-Sook Kim, Minwoo Park, Sang-hwan Lee |
| 2015 | W2GIS | Measuring Crowd Mood in City Space Through Twitter. | Shoko Wakamiya, Lamia Belouaer, David Brosset, Ryong Lee, Yukiko Kawai, Kazutoshi Sumiya, Christophe Claramunt |
| 2013 | MDM | Complementary Integration of Heterogeneous Crowd-Sourced Datasets for Enhanced Social Analytics. | Ryong Lee, Kyoung-Sook Kim, Komei Sugiura, Koji Zettsu, Yutaka Kidawara |
| 2013 | MDM | Utterance Classification Using Linguistic and Non-linguistic Information for Network-Based Speech-to-Speech Translation Systems. | Komei Sugiura, Ryong Lee, Hideki Kashioka, Koji Zettsu, Yutaka Kidawara |
| 2012 | DASFAA | Exploring Reflection of Urban Society through Cyber-Physical Crowd Behavior on Location-Based Social Network. | Shoko Wakamiya, Ryong Lee, Kazutoshi Sumiya |
| 2011 | DASFAA | Crowd-Powered TV Viewing Rates: Measuring Relevancy between Tweets and TV Programs. | Shoko Wakamiya, Ryong Lee, Kazutoshi Sumiya |
| 2010 | AINA | Detection of Unusually Crowded Places through Micro-Blogging Sites. | Tatsuya Fujisaka, Ryong Lee, Kazutoshi Sumiya |
| 2010 | AINA | Pros and Cons of Utilizing Mobile Navigation Systems in Pedestrian Way Finding. | Kaori Kobayashi, Ryong Lee, Kazutoshi Sumiya |
| 2010 | DASFAA | Monitoring Geo-social Activities through Micro-blogging Sites. | Tatsuya Fujisaka, Ryong Lee, Kazutoshi Sumiya |
| 2009 | ICWE | Zero-Effort Search and Integration Model for Augmented Web Applications. | Ryong Lee, Kazutoshi Sumiya |
| 2009 | ISM | Automatic Generation of Learning Channels by Using Semantic Relations among Lecture Slides and Recorded Videos for Self-Learning Systems. | Yuanyuan Wang, Daisuke Kitayama, Ryong Lee, Kazutoshi Sumiya |
| 2009 | WWW | A method of analyzing credibility based on LOD control of digital maps. | Daisuke Kitayama, Ryong Lee, Kazutoshi Sumiya |
| 2008 | CIKM | Web-based evidence excavation to explore the authenticity of local events. | Ryong Lee, Daisuke Kitayama, Kazutoshi Sumiya |
| 2007 | W2GIS | A Continuous Spatial Query Processing for Push-Based Geographic Web Search Systems. | Ryong Lee, Yongjin Kwon |
| 2003 | WISE | Optimization of geographic area to a Web page for two-dimensional range query processing. | Ryong Lee, Hironori Shiina, Hiroki Takakura, Yongjin Kwon, Yahiko Kambayashi |
| 2002 | WWW | Caching Schema for Mobile Web information Retrieval. | Ryong Lee, K. Goshima, Yahiko Kambayashi, Hiroki Takakura |
| 2002 | WISE | Web Locality Based Ranking Utilizing Location Names and Link Structure. | Yohsuke Inoue, Ryong Lee, Hiroki Takakura, Yahiko Kambayashi |
| 2002 | WISE | Classification of Web Pages with Geographic Scope and Level of Details for Mobile Cache Management. | Naoharu Yamada, Ryong Lee, Yahiko Kambayashi, Hiroki Takakura |
| 2001 | WISE | Web-Based Inference Rules for Processing Conceptual Geographical Relationships. | Taro Tezuka, Ryong Lee, Yahiko Kambayashi, Hiroki Takakura |
| 2000 | DEXA | Data Security for Distributed Meeting Systems. | Ryong Lee, Yahiko Kambayashi |