no code implementations • 19 Mar 2024 • Kaiji Sekimoto, Muneki Yasuda
In GBRBM-based anomaly detection, normal and anomalous data are classified based on a score that is identical to an energy function of the marginal GBRBM.
Semi-supervised Anomaly Detection Supervised Anomaly Detection
no code implementations • 27 Oct 2022 • Yuri Kanno, Muneki Yasuda
Inspired by the idea of ELM, a probabilistic untrained layer called a probabilistic-ELM (PELM) layer is proposed, and it is combined with a discriminative restricted Boltzmann machine (DRBM), which is a probabilistic three-layered neural network for solving classification problems.
no code implementations • 8 Apr 2022 • Muneki Yasuda, Chako Takahashi
The evaluation of the free energy of a stochastic model is considered a significant issue in various fields of physics and machine learning.
no code implementations • 7 Apr 2022 • Kaiji Sekimoto, Muneki Yasuda
In SMCI, the multiple summation for the variables in the sum region is precisely executed, and that in the outer region is evaluated by the sampling approximation such as the standard Monte Carlo integration.
no code implementations • 21 Dec 2020 • Muneki Yasuda, Kaiji Sekimoto
However, the estimations obtained using SMCI (and MCI) exhibit a low accuracy in Ising models under a low temperature owing to degradation of the sampling quality.
1 code implementation • 4 Sep 2020 • Muneki Yasuda, Kei Uchizawa
However, SMCI as proposed in the previous studies suffers from a limitation that prevents the application of a higher-order method to dense systems.
no code implementations • 6 Jan 2020 • Muneki Yasuda, Yeo Xian En, Seishirou Ueno
A combination of WLF and batch normalization (BN) is considered in this study.
no code implementations • 25 Nov 2019 • Muneki Yasuda, Seishirou Ueno
We consider a combination of weighted loss function and batch normalization (BN) in this study.
no code implementations • 14 Jun 2019 • Muneki Yasuda, Tomoyuki Obuchi
In this study, we consider an empirical Bayes method for Boltzmann machines and propose an algorithm for it.
no code implementations • 30 Nov 2018 • Yuuki Yokoyama, Tomu Katsumata, Muneki Yasuda
Generalization is one of the most important issues in machine learning problems.
no code implementations • 20 Mar 2018 • Kazuyuki Tanaka, Masamichi Nakamura, Shun Kataoka, Masayuki Ohzeki, Muneki Yasuda
A new Bayesian modeling method is proposed by combining the maximization of the marginal likelihood with a momentum-space renormalization group transformation for Gaussian graphical models.
no code implementations • 1 Dec 2017 • Muneki Yasuda, Kazuyuki Tanaka
A susceptibility propagation that is constructed by combining a belief propagation and a linear response method is used for approximate computation for Markov random fields.
1 code implementation • 20 Oct 2017 • Muneki Yasuda, Junpei Watanabe, Shun Kataoka, Kazuyuki Tanaka
In this paper, we consider Bayesian image denoising based on a Gaussian Markov random field (GMRF) model, for which we propose an new algorithm.
no code implementations • 28 Mar 2017 • Muneki Yasuda, Shun Kataoka
The exact treatment of maximum likelihood estimation is intractable because of two problems: (1) it includes the evaluation of the partition function and (2) it is formulated in the form of functional optimization.
no code implementations • 21 Jul 2016 • Shun Kataoka, Takuto Kobayashi, Muneki Yasuda, Kazuyuki Tanaka
We propose a new algorithm to detect the community structure in a network that utilizes both the network structure and vertex attribute data.
no code implementations • 8 Mar 2016 • Muneki Yasuda
Nonnegative Boltzmann machines (NNBMs) are recurrent probabilistic neural network models that can describe multi-modal nonnegative data.
no code implementations • 3 Dec 2015 • Chako Takahashi, Muneki Yasuda
A Gaussian restricted Boltzmann machine (GRBM) is a Boltzmann machine defined on a bipartite graph and is an extension of usual restricted Boltzmann machines.
no code implementations • 16 Mar 2015 • Muneki Yasuda, Shun Kataoka, Kazuyuki Tanaka
In the latter part of this paper, we describe the application of the proposed method to Bayesian image restoration, in which we observed that our theoretical results are in good agreement with the numerical results for natural images.
no code implementations • 5 Jan 2015 • Kazuyuki Tanaka, Shun Kataoka, Muneki Yasuda, Masayuki Ohzeki
A new Bayesian image segmentation algorithm is proposed by combining a loopy belief propagation with an inverse real space renormalization group transformation to reduce the computational time.
no code implementations • 16 Dec 2014 • Tomoyuki Obuchi, Hirokazu Koma, Muneki Yasuda
Prior distributions of binarized natural images are learned by using a Boltzmann machine.
no code implementations • 24 Jun 2014 • Muneki Yasuda, Shun Kataoka, Yuji Waizumi, Kazuyuki Tanaka
Learning the parameters of graphical models using the maximum likelihood estimation is generally hard which requires an approximation.
no code implementations • 23 Apr 2014 • Shun Kataoka, Muneki Yasuda, Kazuyuki Tanaka
We focus on an interpolation method referred to Bayesian reconstruction in this paper.
no code implementations • 11 Apr 2014 • Kazuyuki Tanaka, Shun Kataoka, Muneki Yasuda, Yuji Waizumi, Chiou-Ting Hsu
This paper presents a Bayesian image segmentation model based on Potts prior and loopy belief propagation.
no code implementations • 27 Jun 2013 • Shun Kataoka, Muneki Yasuda, Cyril Furtlehner, Kazuyuki Tanaka
We consider the traffic data reconstruction problem.