Search Results for author: Kohta Ishikawa

Found 9 papers, 2 papers with code

Informative Sample-Aware Proxy for Deep Metric Learning

no code implementations18 Nov 2022 Aoyu Li, Ikuro Sato, Kohta Ishikawa, Rei Kawakami, Rio Yokota

Among various supervised deep metric learning methods proxy-based approaches have achieved high retrieval accuracies.

Metric Learning Retrieval

Feature Space Particle Inference for Neural Network Ensembles

1 code implementation2 Jun 2022 Shingo Yashima, Teppei Suzuki, Kohta Ishikawa, Ikuro Sato, Rei Kawakami

Ensembles of deep neural networks demonstrate improved performance over single models.

Takeuchi's Information Criteria as Generalization Measures for DNNs Close to NTK Regime

no code implementations29 Sep 2021 Hiroki Naganuma, Taiji Suzuki, Rio Yokota, Masahiro Nomura, Kohta Ishikawa, Ikuro Sato

Generalization measures are intensively studied in the machine learning community for better modeling generalization gaps.

Hyperparameter Optimization

Proper Straight-Through Estimator: Breaking symmetry promotes convergence to true minimum

no code implementations29 Sep 2021 Shinya Gongyo, Kohta Ishikawa

By considering the scale symmetry of the network and specific properties of the STEs, we find that STE with clipped Relu is superior to STEs with identity function and vanilla Relu.

CorsNet: 3D Point Cloud Registration by Deep Neural Network

no code implementations3 Feb 2020 Akiyoshi Kurobe, Yusuke Sekikawa, Kohta Ishikawa, and Hideo Saito

For comparison, we also developed a novel deep learning approach (DirectNet) that directly regresses the pose between point clouds.

Point Cloud Registration

Breaking Inter-Layer Co-Adaptation by Classifier Anonymization

no code implementations4 Jun 2019 Ikuro Sato, Kohta Ishikawa, Guoqing Liu, Masayuki Tanaka

This study addresses an issue of co-adaptation between a feature extractor and a classifier in a neural network.

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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