76 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP8 papers
- National Institute of Advanced Industrial Science and TechnologyJP6 papers
- Tokyo Institute of TechnologyJP4 papers
- Chiba Institute of TechnologyJP2 papers
- Institute of Space and Astronautical ScienceJP2 papers
- Planetary Science InstituteUS2 papers
- Aichi Toho UniversityJP1 paper
- Artificial Intelligence Research CenterJP1 paper
- Astronomical Society of AustraliaAU1 paper
- Brown UniversityUS1 paper
- California University of PennsylvaniaUS1 paper
- Centre National de la Recherche ScientifiqueFR1 paper
20 papers
Fundamental thermo-visco mechanical interactions governing the acoustic response of laser-excited nanoparticles
Stefano Giordano, Michele Diego, Francesco Banfi +1
In this work, we investigate the thermoacoustic generation and propagation of spherical waves in a viscous fluid induced by a laser-heated spherical particle. Periodic laser excita…
Proceedings of the 20th International Conference on Knowledge, Information and Creativity Support Systems (KICSS 2025)
Edited by Tessai Hayama, Takayuki Ito, Takahiro Uchiya +10
This volume presents the proceedings of the 20th International Conference on Knowledge, Information and Creativity Support Systems (KICSS 2025), held in Nagaoka, Japan, on December…
A Universal Framework for Offline Serendipity Evaluation in Recommender Systems via Large Language Models
Yu Tokutake, Kazushi Okamoto, Kei Harada +2
Serendipity in recommender systems (RSs) has attracted increasing attention as a concept that enhances user satisfaction by presenting unexpected and useful items. However, evaluat…
Preference-Optimal Multi-Metric Weighting for Parallel Coordinate Plots
Chisa Mori, Shuhei Watanabe, Masaki Onishi +1
Parallel coordinate plots (PCPs) are a prevalent method to interpret the relationship between the control parameters and metrics. PCPs deliver such an interpretation by color grada…
D4orm: Multi-Robot Trajectories with Dynamics-aware Diffusion Denoised Deformations
Yuhao Zhang, Keisuke Okumura, Heedo Woo +2
This work presents an optimization method for generating kinodynamically feasible and collision-free multi-robot trajectories that exploits an incremental denoising scheme in diffu…
Indexing current-voltage characteristics using a hash function
T. Tanamoto, S. Furukawa, R. Kitahara +3
Differentiating between devices of the same size is essential for ensuring their reliability. However, identifying subtle differences can be challenging, particularly when the devi…
Scaling Large-scale GNN Training to Thousands of Processors on CPU-based Supercomputers
Chen Zhuang, Lingqi Zhang, Du Wu +8
Graph Convolutional Networks (GCNs), particularly for large-scale graphs, are crucial across numerous domains. However, training distributed full-batch GCNs on large-scale graphs s…
The origins of noise in the Zeeman splitting of spin qubits in natural-silicon devices
Juan S. Rojas-Arias, Yohei Kojima, Kenta Takeda +7
We measure and analyze noise-induced energy-fluctuations of spin qubits defined in quantum dots made of isotopically natural silicon. Combining Ramsey, time-correlation of single-s…
Are Deepfakes Concerning? Analyzing Conversations of Deepfakes on Reddit and Exploring Societal Implications
Dilrukshi Gamage, Piyush Ghasiya, Vamshi Krishna Bonagiri +2
Deepfakes are synthetic content generated using advanced deep learning and AI technologies. The advancement of technology has created opportunities for anyone to create and share d…
High-Resolution Observations of Bright Boulders on Asteroid Ryugu: 1. Size Frequency Distribution and Morphology
Chiho Sugimoto, Eri Tatsumi, Yuichiro Cho +34
The near-Earth asteroid (162173) Ryugu displays a Cb-type average spectrum and a very low average normal albedo of 0.04. Although the majority of boulders on Ryugu have reflectance…
A Long-lived Sharp Disruption on the Lower Clouds of Venus
J. Peralta, T. Navarro, C. W. Vun +19
Planetary-scale waves are thought to play a role in powering the yet-unexplained atmospheric superrotation of Venus. Puzzlingly, while Kelvin, Rossby and stationary waves manifest…
Early Discovery of Emerging Entities in Microblogs
Satoshi Akasaki, Naoki Yoshinaga, Masashi Toyoda
Keeping up to date on emerging entities that appear every day is indispensable for various applications, such as social-trend analysis and marketing research. Previous studies have…
Quasi-ballistic heat conduction due to Lévy phonon flights in silicon nanowires
Roman Anufriev, Sergei Gluchko, Sebastian Volz +1
Future of silicon-based microelectronics relies on solving the heat dissipation problem. A solution may lie in a nanoscale phenomenon known as ballistic heat conduction, which impl…
On -hyperparameter Learning via Bilevel Nonsmooth Optimization
Takayuki Okuno, Akiko Takeda, Akihiro Kawana +1
We propose a bilevel optimization strategy for selecting the best hyperparameter value for the nonsmooth regularizer with . The concerned bilevel optimization pr…
An Analytic Solution to the Inverse Ising Problem in the Tree-reweighted Approximation
Takashi Sano
Many iterative and non-iterative methods have been developed for inverse problems associated with Ising models. Aiming to derive an accurate non-iterative method for the inverse pr…
A constant-ratio approximation algorithm for a class of hub-and-spoke network design problems and metric labeling problems: star metric case
Yuko Kuroki, Tomomi Matsui
Transportation networks frequently employ hub-and-spoke network architectures to route flows between many origin and destination pairs. Hub facilities work as switching points for…
Robust and sparse Gaussian graphical modeling under cell-wise contamination
Shota Katayama, Hironori Fujisawa, Mathias Drton
Graphical modeling explores dependences among a collection of variables by inferring a graph that encodes pairwise conditional independences. For jointly Gaussian variables, this t…
On Equivalence of M-concavity of a Set Function and Submodularity of Its Conjugate
Kazuo Murota, Akiyoshi Shioura
A fundamental theorem in discrete convex analysis states that a set function is M-concave if and only if its conjugate function is submodular. This paper gives a new pro…
Unidirectional control of optically induced spin waves
Isao Yoshimine, Yoshito Y. Tanaka, Tsutomu Shimura +1
Unidirectional control of optically induced spin waves in a rare-earth iron garnet crystal is demonstrated. We observed the interference of two spin-wave packets with different ini…
Approximation Algorithm for Cycle-Star Hub Network Design Problems and Cycle-Metric Labeling Problems
Yuko Kuroki, Tomomi Matsui
We consider a single allocation hub-and-spoke network design problem which allocates each non-hub node to exactly one of given hub nodes so as to minimize the total transportation…