Search Results for author: Hironobu Fujiyoshi

Found 17 papers, 3 papers with code

Learning from AI: An Interactive Learning Method Using a DNN Model Incorporating Expert Knowledge as a Teacher

no code implementations4 Jun 2023 Kohei Hattori, Tsubasa Hirakawa, Takayoshi Yamashita, Hironobu Fujiyoshi

In this study, based on a deep-learning model that incorporates the knowledge of experts, a method by which a learner "learns from AI" the grounds for its decisions is proposed.

Decision Making

Masking and Mixing Adversarial Training

no code implementations16 Feb 2023 Hiroki Adachi, Tsubasa Hirakawa, Takayoshi Yamashita, Hironobu Fujiyoshi, Yasunori Ishii, Kazuki Kozuka

Adversarial training is a popular and straightforward technique to defend against the threat of adversarial examples.

Object-ABN: Learning to Generate Sharp Attention Maps for Action Recognition

no code implementations27 Jul 2022 Tomoya Nitta, Tsubasa Hirakawa, Hironobu Fujiyoshi, Toru Tamaki

Experimental results with UCF101 and SSv2 shows that the generated maps by the proposed method are much clearer qualitatively and quantitatively than those of the original ABN.

Action Recognition Instance Segmentation +2

Deep Ensemble Collaborative Learning by using Knowledge-transfer Graph for Fine-grained Object Classification

no code implementations27 Mar 2021 Naoki Okamoto, Soma Minami, Tsubasa Hirakawa, Takayoshi Yamashita, Hironobu Fujiyoshi

In this study, we propose an ensemble method using knowledge transfer to improve the accuracy of ensembles by introducing a loss design that promotes diversity among networks in mutual learning.

Ensemble Learning General Classification +2

Visual Explanation using Attention Mechanism in Actor-Critic-based Deep Reinforcement Learning

no code implementations6 Mar 2021 Hidenori Itaya, Tsubasa Hirakawa, Takayoshi Yamashita, Hironobu Fujiyoshi, Komei Sugiura

A3C consists of a feature extractor that extracts features from an image, a policy branch that outputs the policy, and a value branch that outputs the state value.

Decision Making reinforcement-learning +1

Knowledge Transfer Graph for Deep Collaborative Learning

1 code implementation10 Sep 2019 Soma Minami, Tsubasa Hirakawa, Takayoshi Yamashita, Hironobu Fujiyoshi

To achieve the knowledge transfer, we propose a novel graph representation called knowledge transfer graph that provides a unified view of the knowledge transfer and has the potential to represent diverse knowledge transfer patterns.

Knowledge Distillation Transfer Learning

Attention Branch Network: Learning of Attention Mechanism for Visual Explanation

3 code implementations CVPR 2019 Hiroshi Fukui, Tsubasa Hirakawa, Takayoshi Yamashita, Hironobu Fujiyoshi

ABN can be applicable to several image recognition tasks by introducing a branch for attention mechanism and is trainable for the visual explanation and image recognition in end-to-end manner.

Decision Making Image Classification

Survey on Vision-based Path Prediction

no code implementations1 Nov 2018 Tsubasa Hirakawa, Takayoshi Yamashita, Toru Tamaki, Hironobu Fujiyoshi

Because path prediction as a task of computer vision uses video as input, various information used for prediction, such as the environment surrounding the target and the internal state of the target, need to be estimated from the video in addition to predicting paths.

Denoising random forests

no code implementations30 Oct 2017 Masaya Hibino, Akisato Kimura, Takayoshi Yamashita, Yuji Yamauchi, Hironobu Fujiyoshi

A denoising autoencoder can be trained with indicator vectors produced from clean and noisy input samples, and non-leaf nodes where incorrect decisions are made can be identified by comparing the input and output of the trained denoising autoencoder.

Denoising

Binary-decomposed DCNN for accelerating computation and compressing model without retraining

no code implementations14 Sep 2017 Ryuji Kamiya, Takayoshi Yamashita, Mitsuru Ambai, Ikuro Sato, Yuji Yamauchi, Hironobu Fujiyoshi

Our method replaces real-valued inner-product computations with binary inner-product computations in existing network models to accelerate computation of inference and decrease model size without the need for retraining.

Multiple-Hypothesis Affine Region Estimation With Anisotropic LoG Filters

no code implementations ICCV 2015 Takahiro Hasegawa, Mitsuru Ambai, Kohta Ishikawa, Gou Koutaki, Yuji Yamauchi, Takayoshi Yamashita, Hironobu Fujiyoshi

We propose a method for estimating multiple-hypothesis affine regions from a keypoint by using an anisotropic Laplacian-of-Gaussian (LoG) filter.

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