Search Results for author: katsuhiko Ishiguro

Found 10 papers, 1 papers with code

PolMERLIN: Self-Supervised Polarimetric Complex SAR Image Despeckling with Masked Networks

no code implementations15 Jan 2024 Shunya Kato, Masaki Saito, katsuhiko Ishiguro, Sol Cummings

However, existing methods deal solely with single-polarization images and cannot handle the multi-polarization images captured by modern satellites.

Sar Image Despeckling

Data Transfer Approaches to Improve Seq-to-Seq Retrosynthesis

no code implementations2 Oct 2020 katsuhiko Ishiguro, Kazuya Ujihara, Ryohto Sawada, Hirotaka Akita, Masaaki Kotera

Especially, the pre-training plus fine-tuning approach boosts the accuracy scores of the baseline, achieving the new state-of-the-art.

Retrosynthesis

Learning Structured Latent Factors from Dependent Data:A Generative Model Framework from Information-Theoretic Perspective

no code implementations ICML 2020 Ruixiang Zhang, Masanori Koyama, katsuhiko Ishiguro

Learning controllable and generalizable representation of multivariate data with desired structural properties remains a fundamental problem in machine learning.

Fairness Inductive Bias

Weisfeiler-Lehman Embedding for Molecular Graph Neural Networks

no code implementations12 Jun 2020 Katsuhiko Ishiguro, Kenta Oono, Kohei Hayashi

A graph neural network (GNN) is a good choice for predicting the chemical properties of molecules.

Feature Engineering Link Prediction

Graph Residual Flow for Molecular Graph Generation

no code implementations30 Sep 2019 Shion Honda, Hirotaka Akita, katsuhiko Ishiguro, Toshiki Nakanishi, Kenta Oono

Statistical generative models for molecular graphs attract attention from many researchers from the fields of bio- and chemo-informatics.

Graph Generation Molecular Graph Generation

GraphNVP: an Invertible Flow-based Model for Generating Molecular Graphs

no code implementations25 Sep 2019 Kaushalya Madhawa, katsuhiko Ishiguro, Kosuke Nakago, Motoki Abe

In contrast, our model is the first invertible model for the whole graph components: both of dequantized node attributes and adjacency tensor are converted into latent vectors through two novel invertible flows.

Graph Generation Molecular Graph Generation +1

Graph Warp Module: an Auxiliary Module for Boosting the Power of Graph Neural Networks in Molecular Graph Analysis

1 code implementation4 Feb 2019 Katsuhiko Ishiguro, Shin-ichi Maeda, Masanori Koyama

Graph Neural Network (GNN) is a popular architecture for the analysis of chemical molecules, and it has numerous applications in material and medicinal science.

Machine-learning Selection of Optical Transients in Subaru/Hyper Suprime-Cam Survey

no code implementations12 Sep 2016 Mikio Morii, Shiro Ikeda, Nozomu Tominaga, Masaomi Tanaka, Tomoki Morokuma, katsuhiko Ishiguro, Junji Yamato, Naonori Ueda, Naotaka Suzuki, Naoki Yasuda, Naoki Yoshida

We present an application of machine-learning (ML) techniques to source selection in the optical transient survey data with Hyper Suprime-Cam (HSC) on the Subaru telescope.

Instrumentation and Methods for Astrophysics

Collapsed Variational Bayes Inference of Infinite Relational Model

no code implementations16 Sep 2014 Katsuhiko Ishiguro, Issei Sato, Naonori Ueda

The Infinite Relational Model (IRM) is a probabilistic model for relational data clustering that partitions objects into clusters based on observed relationships.

Clustering

Dynamic Infinite Relational Model for Time-varying Relational Data Analysis

no code implementations NeurIPS 2010 Katsuhiko Ishiguro, Tomoharu Iwata, Naonori Ueda, Joshua B. Tenenbaum

We propose a new probabilistic model for analyzing dynamic evolutions of relational data, such as additions, deletions and split & merge, of relation clusters like communities in social networks.

Object

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