86 citations · 160 across the 9 of their papers we have counts for
9 papers
Closed-Form Steepest Descent Direction toward Flat Minima: Reducing Upper Bounds on the Loss Hessian Eigenspectrum in Neural Networks
Yuto Omae, Kazuki Sakai, Yohei Kakimoto +3
The flatness hypothesis suggests that flatness of the loss landscape, as measured by the eigenvalues of the loss Hessian, correlates with better neural network generalization. Whil…
Wolkowicz-Styan Upper Bound on the Hessian Eigenspectrum for Cross-Entropy Loss in Nonlinear Smooth Neural Networks
Yuto Omae, Kazuki Sakai, Yohei Kakimoto +3
Neural networks (NNs) are central to modern machine learning and achieve state-of-the-art results in many applications. However, the relationship between loss geometry and generali…
Computing the Wave: Where the Gravitational Wave Community benefits from High-Energy Physics, and where it differs ?
Marco Meyer-Conde, Nobuyuki Kanda, Hirotaka Takahashi +2
High-Energy Physics (HEP) and Gravitational Wave (GW) communities serve different scientific purposes. However, their methodologies might potentially offer mutual enrichment throug…
Parameter estimation of protoneutron stars from gravitational wave signals using the Hilbert-Huang transform
Seiya Sasaoka, Yusuke Sakai, Diego Dominguez +5
Core-collapse supernovae (CCSNe) are potential multimessenger events detectable by current and future gravitational wave (GW) detectors. The GW signals emitted during these events…
Black hole spectroscopy for KAGRA future prospect in O5
Nami Uchikata, Tatsuya Narikawa, Kazuki Sakai +2
Ringdown gravitational waves of compact binary mergers are an important target to test general relativity. The main components of the ringdown waveform after merger are black hole…
Comparison of various methods to extract ringdown frequency from gravitational wave data
Hiroyuki Nakano, Tatsuya Narikawa, Ken-ichi Oohara +7
The ringdown part of gravitational waves in the final stage of merger of compact objects tells us the nature of strong gravity which can be used for testing the theories of gravity…
Construction of KAGRA: an Underground Gravitational Wave Observatory
T. Akutsu, M. Ando, S. Araki +222
Major construction and initial-phase operation of a second-generation gravitational-wave detector KAGRA has been completed. The entire 3-km detector is installed underground in a m…
Estimation of starting times of quasinormal modes in ringdown gravitational waves with the Hilbert-Huang transform
Kazuki Sakai, Ken-ichi Oohara, Hiroyuki Nakano +2
It is known that a quasinormal mode (QNM) of a remnant black hole dominates a ringdown gravitational wave (GW) in a binary black hole (BBH) merger. To study properties of the QNMs,…
Amplitude-based detection method for gravitational wave bursts with the Hilbert-Huang Transform
Kazuki Sakai, Ken-ichi Oohara, Masato Kaneyama +1
We propose a new detection method for gravitational wave bursts. It analyzes observed data with the Hilbert-Huang transform, which is an approach of time-frequency analysis constru…