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External Awards IPSJ Specially Selected PaperWinners: Takuya Watanabe, NTT Social Informatics Laboratories; Eitaro Shioji, NTT Social Informatics Laboratories; Mitsuaki Akiyama, NTT Social Informatics Laboratories; Tatsuya Mori, Waseda University Date: August 2, 2024 Organization: Information Processing Society of Japan (IPSJ) For “Understanding the Breakdown of Same-origin Policies in Web Services That Rehost Websites.” Published as: T. Watanabe, E. Shioji, M. Akiyama, and T. Mori, “Understanding the Breakdown of Same-origin Policies in Web Services That Rehost Websites,” Journal of Information Processing, Vol. 65, No. 9, 2024. 2024 PoC of the YearWinners: Tomonori Takeda, NTT Network Service Systems Laboratories; Shin Kaneko, NTT Access Network Service Systems Laboratories; Kazuya Anazawa, NTT Network Innovation Laboratories; Hayato Ueda, NTT COMWARE Corporation Date: September 3, 2024 Organization: IOWN Global Forum For the achievement of a proof of concept of the Open All Photonics Network (APN). ESA B best paperWinners: Hideo Bannai, Tokyo Medical and Dental University; Mitsuru Funakoshi, NTT Communication Science Laboratories; Diptarama Hendrian, Tokyo Medical and Dental University; Myuji Matsuda, Tokyo Medical and Dental University; and Simon J. Puglisi, University of Helsinki Date: September 4, 2024 Organization: 32nd Annual European Symposium on Algorithms (ESA 2024) For “Height-bounded Lempel-Ziv Encodings.” Published as: H. Bannai, M. Funakoshi, D. Hendrian, M. Matsuda, and S. J. Puglisi, “Height-bounded Lempel-Ziv Encodings,” ESA 2024, London, UK, Apr. 2024, Leibniz International Proceedings in Informatics (LIPIcs), Vol. 308, Article no. 18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik, 2024. Communications Society: Distinguished Contributions AwardWinner: Kumi Jinzenji, NTT Software Innovation Center Date: September 10, 2024 Organization: The Institute of Electronics, Information and Communication Engineers (IEICE) Communications Society For contribution as a secretary of the IEICE Technical Committee on Information Networks. Communications Society: Distinguished Contributions AwardWinner: Noritsugu Egi, NTT Network Service Systems Laboratories Date: September 10, 2024 Organization: IEICE Communications Society For contribution as a secretary of the Technical Committee on Communication Quality. Communications Society: Distinguished Contributions AwardWinner: Kazuhisa Yamagishi, NTT Network Service Systems Laboratories Date: September 10, 2024 Organization: IEICE Communications Society For contribution as an editor of IEICE Communications Society’s English-language journals. Communications Society: Distinguished Contributions AwardWinner: Yu Miyoshi, NTT Network Innovation Center/NTT Network Service Systems Laboratories Date: September 10, 2024 Organization: IEICE Communications Society For contribution as the vice chair of the Technical Committee on Information and Communication Management. Communications Society: Distinguished Contributions AwardWinner: Yoshifumi Kato, NTT Network Innovation Center/NTT Network Service Systems Laboratories Date: September 10, 2024 Organization: IEICE Communications Society For contribution as a secretary of the Technical Committee on Information and Communication Management. Communications Society: Distinguished Contributions AwardWinner: Atsushi Taniguchi, NTT Network Innovation Laboratories Date: September 10, 2024 Organization: IEICE Communications Society For contribution as a committee member of the Technical Committee on Communication Systems. Papers Published in Technical Journals and Conference ProceedingsChange Point Detection Based on Cluster Transition DistributionsS. Takahashi, K. Takeshita, K. Yamagishi, and A. Shiozu IEEE Access, Vol. 12, pp. 125145–125159, September 2024. Nowadays, anomaly detection (AD) models are incorporated into various systems, but they will become useless if they are not updated (i.e., re-trained) to keep up with changes in their external environment. When trying to automatically trigger AD model updates in response to environmental changes, one promising solution is considered to be the use of a change point detection (CPD) method. Most existing methods impose stationary or independent and identically distributed (IID) constraints on the target time-series, and therefore are not suitable for our target time-series in telecommunications that often fluctuate periodically. In this paper, we propose a new clustering-based CPD method for detecting changes in non-stationary time-series. The proposed method enables pattern changes to be detected by tracking cluster transitions and calculating the distance between the cluster transition distributions for the past and current periods. The accuracy of the proposed CPD method itself and the effect of re-training the AD model at the detected change points are shown by using real hourly time-series data at mobile base stations in the Tokyo Metropolitan Area for nearly one year. Strong Dipole-Dipole Interactions via Enhanced Light-matter Coupling in Composite Nanofiber WaveguidesK. Jain, L. Ruks, F. le Kien, and T. Busch Physical Review Research, Vol. 6, 033311, September 2024 We study the interaction of emitters with a composite waveguide formed from two parallel optical nanofibers in regimes of experimental importance for atomic gases or solid-state emitters. Using the exact dyadic Green’s function we comprehensively investigate the coupling efficiency and the fiber-induced Lamb shift accounting for variations in emitter positions and fiber configurations. This reveals coupling efficiencies and Purcell factors that are enhanced considerably beyond those using a single fiber waveguide, and robustness in the figures of merit. We finally investigate resonant dipole-dipole interactions and the generation of entanglement between two emitters mediated through the composite waveguide under excitation. We show that the concurrence can be enhanced for two fiber systems, such that entanglement may be present even in cases where it is zero for a single fiber. All-fiber systems are simple in construction and benefit from a wealth of existing telecommunications technologies, while enjoying strong couplings to emitters and offering interesting light-matter functionalities specific to slot waveguides. |