Kohei Watabe, Shohei Nakazawa, Yoshiki Sato, Sho Tsugawa, and Kenji Nakagawa, ``GraphTune: A Learning-Based Graph Generative Model With Tunable Structural Features'', IEEE Transactions on Network Science and Engineering, vol. 10, no. 4, pp. 2226-2238, 2023.
Kohei Watabe, Norinosuke Murai, Shintaro Hirakawa, and Kenji Nakagawa, ``Accurate Parallel Flow Monitoring for Loss Measurements'', IEICE Transactions on Communications, vol. E105-B, no. 12, pp. 1530-1539, 2022.
Kenji Nakagawa, Yoshinori Takei, Shin-ichiro Hara, and Kohei Watabe, ``Analysis of the Convergence Speed of the Arimoto-Blahut Algorithm by the Second-Order Recurrence Formula'', IEEE Transactions on Information Theory, vol. 67, no. 10, pp. 6810-6831, 2021.
Kohei Watabe, Shintaro Hirakawa, and Kenji Nakagawa, ``A Parallel Flow Monitoring Technique That Achieves Accurate Delay Measurement'', IEICE Transactions on Communications, vol. E102-B, no. 4, pp. 865-875, 2019.
Kohei Watabe, Toru Mano, Takeru Inoue, Kimihiro Mizutani, Osamu Akashi, and Kenji Nakagawa, ``Measuring Lost Packets with Minimum Counters in Traffic Matrix Estimation'', IEICE Transactions on Communications, vol. E102-B, no. 1, pp. 76-87, 2019.
Yusuke Koizumi, Kohei Watabe, and Kenji Nakagawa, ``Reduction of Response Time by Data Placement Reflecting Co-Occurrence Structures in Structured Overlay Networks'', PLOS ONE, vol. 12, no. 10, 2018.
Minh Tuan Nguyen, Kohei Watabe, Thanh Giang Pham, and Kenji Nakagawa, ``Improving Fairness in Wireless Ad Hoc Networks by Channel Access Sensing at Link Layer and Packet Rate Control'', IEICE Transactions on Communications, vol. E100-B, no. 10, pp. 1818-1826, 2017.
Kohei Watabe and Kenji Nakagawa, ``Packet Delay Estimation That Transcends a Fundamental Accuracy Bound Due to Bias in Active Measurements'', IEICE Transactions on Communications, vol. E100-B, no. 8, pp. 1377-1387, 2017.
Kenji Nakagawa, Kohei Watabe, and Takuto Sabu, ``On the Search Algorithm for the Output Distribution That Achieves the Channel Capacity'', IEEE Transactions on Information Theory, vol. 63, no. 2, pp. 1043-1062, 2017.
Kohei Watabe and Hiroyuki Ohsaki, ``On Spatio-Temporal Message Diffusion in Epidemic Broadcasting'', Ad Hoc & Sensor Wireless Networks, vol. 33, no. 1-4, pp. 53-80, 2016.
Kohei Watabe and Hiroyuki Ohsaki, ``Contact Duration-Aware Epidemic Broadcasting in Delay/Disruption-Tolerant Networks'', IEICE Transactions on Communications, vol. E98-B, no. 12, pp. 2389-2399, 2015.
Kohei Watabe and Masaki Aida, ``On Optimal Magnitude of Fluctuations in Probe Packet Arrival Intervals'', IEICE Transactions on Communications, vol. E96-B, no. 12, pp. 3028-3040, 2013.
Kohei Watabe and Masaki Aida, ``Modeling Fluctuations in the Quasi-Static Approach Describing the Temporal Evolution of Retry Traffic'', WSEAS Transactions on Communications, vol. 12, no. 9, pp. 488-498, 2013.
Kohei Watabe, Yudai Honma, and Masaki Aida, ``Probe Interval Designs That Improve Accuracy of CoMPACT Monitor'', Simulation Modelling Practice and Theory, vol. 19, no. 1, pp. 56-68, 2011.
International Conference Proceedings
Yuki Kanto and Kohei Watabe, ``Wireless Link Quality Estimation Using LSTM Model'', 2024 IEEE/IFIP Network Operations and Management Symposium (NOMS 2024), Seoul, Korea , 2024.
Kazuhiro Yasuda, Sho Tsugawa, and Kohei Watabe, ``Impact of Graph-to-Sequence Conversion Methods on the Accuracy of Graph Generation for Network Simulations'', 2024 IEEE/IFIP Network Operations and Management Symposium (NOMS 2024) Workshop, Seoul, Korea , 2024.
Kohei Watabe, ``Evolution and Future Prospects of Graph Generation Models'', 2023 International Conference on Emerging Technologies for Communications (ICETC 2023), Sapporo, Japan , 2023.
Shiori Furukawa, Sho Tsugawa, and Kohei Watabe, ``Effectiveness of Link Deletion Methods Using History of Information Diffusion Cascades for Limiting Their Future Spread on Social Media'', The 2023 International Symposium on Nonlinear Theory and Its Applications (NOLTA 2023), Catania, Italy , 2023.
Takahiro Yokoyama, Yoshiki Sato, Sho Tsugawa, and Kohei Watabe, ``An Accurate Graph Generative Model with Tunable Features'', The 32nd International Conference on Computer Communications and Networks (ICCCN 2023) Poster Session, Honolulu, HI, USA , 2023.
Sho Tsugawa and Kohei Watabe, ``Identifying Influential Brokers on Social Media from Social Network Structure'', The 17th International AAAI Conference on Web and Social Media (ICWSM 2023), Limassol, Cyprus , 2023.
Loc Gia Nguyen and Kohei Watabe, ``A Method for Network Intrusion Detection Using Flow Sequence and BERT Framework'', 2023 IEEE International Conference on Communication (ICC 2023), Rome, Italy, pp. 3006-3011 , 2023.
Loc Gia Nguyen and Kohei Watabe, ``Flow-based Network Intrusion Detection Based on BERT Masked Language Model'', The 18th International Conference on emerging Networking EXperiments and Technologies (CoNEXT 2022) Student Workshop, Rome, Italy, pp. 7-8 , 2022.
Yuta Yamamoto, Asahi Hentona, Koji Marusaki, Kohei Watabe, Seiya Kawano, Tokimasa Goto, Yutaka Hada, Kazuhisa Fukuzawa, and Hirofumi Nonaka, ``Development of the Patent Values Evaluation Method Considering Growth of Technical Community'', IEEE Symposium Series on Computational Intelligence (SSCI 2021), Online , 2021.
Shohei Nakazawa, Yoshiki Sato, Kenji Nakagawa, Sho Tsugawa, and Kohei Watabe, ``A Tunable Model for Graph Generation Using LSTM and Conditional VAE'', The 41st IEEE International Conference on Distributed Computing Systems (ICDCS 2021) Poster Track, Online , 2021.
Kohei Watabe, Masahiro Terauchi, and Kenji Nakagawa, ``Model-less Approach for an Accurate Packet Loss Simulation'', 2020 IEEE International Conference on Communications (ICC 2020), Dublin, Ireland , 2020.
Kohei Watabe, Norinosuke Murai, Shintaro Hirakawa, and Kenji Nakagawa, ``Accurate Loss Estimation Technique Utilizing Parallel Flow Monitoring'', 15th International Conference on Network and Service Management (CNSM 2019) Short paper, Halifax, NS, Canada , 2019.
Kohei Watabe, Norinosuke Murai, Shintaro Hirakawa, and Kenji Nakagawa, ``Accurate Measurement Technique of Packet Loss Rate in Parallel Flow Monitoring'', The 28th International Conference on Computer Communications and Networks (ICCCN 2019) Poster Session, Valencia, Spain , 2019.
Masahiro Terauchi, Kohei Watabe, and Kenji Nakagawa, ``On Accurate Packet Loss Estimation for Networks Without Traffic Models'', Internet Conference 2018 (IC 2018) Poster, Tokyo, Japan , 2018.
Kenji Nakagawa, Yoshinori Takei, and Kohei Watabe, ``Analysis for the Slow Convergence in Arimoto Algorithm'', 2018 International Symposium on Information Theory and its Applications (ISITA 2018), Singapore, pp. 732-736 , 2018.
Masahiro Terauchi, Kohei Watabe, and Kenji Nakagawa, ``Model-Less Approach of Network Traffic for Accurate Packet Loss Simulations'', The 26th IEEE International Conference on Network Protocols (ICNP 2018) Poster session, Cambridge, UK, pp. 251-252 , 2018.
Kohei Watabe, Shintaro Hirakawa, and Kenji Nakagawa, ``Accurate Delay Measurement for Parallel Monitoring of Probe Flows'', 2017 13th International Conference on Network and Service Management (CNSM 2017), Tokyo, Japan , 2017.
Kohei Watabe, Toru Mano, Kimihiro Mizutani, Osamu Akashi, Kenji Nakagawa, and Takeru Inoue, ``A Proposal of an Efficient Traffic Matrix Estimation Under Packet Drops'', The 37th IEEE International Conference on Distributed Computing Systems (ICDCS 2017) Poster Track, Atlanta, GA, USA, pp. 2636-2637 , 2017.
Kenji Nakagawa, Kohei Watabe, and Takuto Sabu, ``On the Search Algorithm for the Output Distribution That Achieves the Channel Capacity'', 2016 International Symposium on Information Theory and its Applications (ISITA 2016), Monterey, CA, USA, pp. 443-447 , 2016.
Minh Tuan Nguyen, Kenji Nakagawa, and Kohei Watabe, ``A Method at Link Layer to Improve the Fairness in Multi-Hop Wireless Ad Hoc Networks'', The 6th International Symposium on Information and Communication Technology (SoICT 2015), Hue, Vietnam, pp. 135-142 , 2015.
Kohei Watabe and Kenji Nakagawa, ``Intrusiveness-Aware Estimation for High Quantiles of a Packet Delay Distribution'', 2015 IEEE International Conference on Communications (ICC 2015), London, UK, pp. 6169-6174 , 2015.
Kohei Watabe and Hiroyuki Ohsaki, ``Effect of Locality of Node Mobility on Epidemic Broadcasting in DTNs'', The 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC 2013) Poster session, Dubai, United Arab Emirates , 2013.
Kosuke Matsuda, Kohei Watabe, and Hiroyuki Ohsaki, ``An Epidemic Broadcasting Mechanism in Delay/Disruption-Tolerant Networks Utilizing Contact Duration Distribution'', The 6th Joint IFIP Wireless and Mobile Networking Conference (WMNC 2013), Dubai, United Arab Emirates , 2013.
Kohei Watabe and Masaki Aida, ``On Modeling of Fluctuations in Quasi-Static Approach Describing the Temporal Evolution of Retry Traffic'', The 23rd International Teletraffic Congress (ITC 2011) Student Poster, San Francisco, CA, USA, pp. 308-309 , 2011.
Kohei Watabe and Masaki Aida, ``Analysis on the Fluctuation Magnitude in Probe Interval for Active Measurement'', The 30th IEEE International Conference on Computer Communication (INFOCOM 2011) Mini-Conference, Shanghai, China, pp. 161-165 , 2011.
Yoshiyuki Ishii, Kohei Watabe, and Masaki Aida, ``Quasi-Static Approach for Retry Traffic with Different Service Time'', The 2nd International Symposium on Aware Computing (ISAC 2010), Tainan, Taiwan, pp. 122-127 , 2010.
Kohei Watabe, Yudai Honma, and Masaki Aida, ``Design of Probe Intervals to Improve Accuracy of CoMPACT Monitor'', International Conference on Intelligent Networking and Collaborative Systems (INCoS 2009) Workshop, Barcelona, Spain, pp. 335-340 , 2009.
Kohei Watabe, Yudai Honma, and Masaki Aida, ``Accuracy Improvement of CoMPACT Monitor by Using New Probing Method'', The 12th Asia-Pacific Network Operations and Management Symposium (APNOMS 2009), Jeju, Korea, pp. 31-40 , 2009.
Kohei Watabe, Yudai Honma, and Masaki Aida, ``Verification of Accuracy Improvement for CoMPACT Monitor Due to Suboptimal Inter-Probe Time'', The 9th Annual International Symposium on Applications and the Internet (SAINT 2009) Short paper, Seattle, WA, USA, pp. 133-136 , 2009.
