Search Results for author: Muneki Yasuda

Found 24 papers, 2 papers with code

Improving Interpretability of Scores in Anomaly Detection Based on Gaussian-Bernoulli Restricted Boltzmann Machine

no code implementations19 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

Multi-layered Discriminative Restricted Boltzmann Machine with Untrained Probabilistic Layer

no code implementations27 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.

Free Energy Evaluation Using Marginalized Annealed Importance Sampling

no code implementations8 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.

Composite Spatial Monte Carlo Integration Based on Generalized Least Squares

no code implementations7 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.

Spatial Monte Carlo Integration with Annealed Importance Sampling

no code implementations21 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.

A Generalization of Spatial Monte Carlo Integration

1 code implementation4 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.

Consistent Batch Normalization for Weighted Loss in Imbalanced-Data Environment

no code implementations6 Jan 2020 Muneki Yasuda, Yeo Xian En, Seishirou Ueno

A combination of WLF and batch normalization (BN) is considered in this study.

Improvement of Batch Normalization in Imbalanced Data

no code implementations25 Nov 2019 Muneki Yasuda, Seishirou Ueno

We consider a combination of weighted loss function and batch normalization (BN) in this study.

Empirical Bayes Method for Boltzmann Machines

no code implementations14 Jun 2019 Muneki Yasuda, Tomoyuki Obuchi

In this study, we consider an empirical Bayes method for Boltzmann machines and propose an algorithm for it.

Momentum-Space Renormalization Group Transformation in Bayesian Image Modeling by Gaussian Graphical Model

no code implementations20 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.

Susceptibility Propagation by Using Diagonal Consistency

no code implementations1 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.

Linear-Time Algorithm in Bayesian Image Denoising based on Gaussian Markov Random Field

1 code implementation20 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.

Image Denoising

Solving Non-parametric Inverse Problem in Continuous Markov Random Field using Loopy Belief Propagation

no code implementations28 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.

Community Detection Algorithm Combining Stochastic Block Model and Attribute Data Clustering

no code implementations21 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.

Attribute Clustering +2

Effective Mean-Field Inference Method for Nonnegative Boltzmann Machines

no code implementations8 Mar 2016 Muneki Yasuda

Nonnegative Boltzmann machines (NNBMs) are recurrent probabilistic neural network models that can describe multi-modal nonnegative data.

Mean-Field Inference in Gaussian Restricted Boltzmann Machine

no code implementations3 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.

Statistical Analysis of Loopy Belief Propagation in Random Fields

no code implementations16 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.

Image Restoration

Inverse Renormalization Group Transformation in Bayesian Image Segmentations

no code implementations5 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.

Image Segmentation Segmentation +1

Composite Likelihood Estimation for Restricted Boltzmann machines

no code implementations24 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.

Bayesian Reconstruction of Missing Observations

no code implementations23 Apr 2014 Shun Kataoka, Muneki Yasuda, Kazuyuki Tanaka

We focus on an interpolation method referred to Bayesian reconstruction in this paper.

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