2 citations · 2 across the 5 of their papers we have counts for
5 papers
A curvature-based criterion for harmonic circadian waveforms
Yusuke Yamada, Yutaro Kabata, Ryoya Fukasaku +1
Experimental and theoretical studies of circadian rhythms have focused largely on the period, on mutants that alter it and on phase shifts, and this focus has driven the identifica…
Algebraic Approach to Ridge-Regularized Mean Squared Error Minimization in Minimal ReLU Neural Network
Ryoya Fukasaku, Yutaro Kabata, Akifumi Okuno
This paper investigates a perceptron, a simple neural network model, with ReLU activation and a ridge-regularized mean squared error (RR-MSE). Our approach leverages the fact that…
Algebraic Approach for Orthomax Rotations
Ryoya Fukasaku, Michio Yamamoto, Yutaro Kabata +2
In exploratory factor analysis, rotation techniques are employed to derive interpretable factor loading matrices. Factor rotations deal with equality-constrained optimization probl…
Algebraic approach to maximum likelihood factor analysis
Ryoya Fukasaku, Kei Hirose, Yutaro Kabata +1
In exploratory factor analysis, model parameters are usually estimated by maximum likelihood method. The maximum likelihood estimate is obtained by solving a complicated multivaria…
An algebraic reduction of Hedetniemi's conjecture
Ryoya Fukasaku, Michitaka Furuya, Akihiro Higashitani
For a graph , let denote the chromatic number. In graph theory, the following famous conjecture posed by Hedetniemi has been studied: For two graphs and , $χ(G\tim…