Fast sparse group lasso

Y Ida, Y Fujiwara, H Kashima - Advances in neural …, 2019 - proceedings.neurips.cc
Abstract Sparse Group Lasso is a method of linear regression analysis that finds sparse
parameters in terms of both feature groups and individual features. Block Coordinate …

Adaptive learning rate via covariance matrix based preconditioning for deep neural networks

Y Ida, Y Fujiwara, S Iwamura - arXiv preprint arXiv:1605.09593, 2016 - arxiv.org
Adaptive learning rate algorithms such as RMSProp are widely used for training deep neural
networks. RMSProp offers efficient training since it uses first order gradients to approximate …

A unified semi-supervised model with joint estimation of graph, soft labels and latent subspace

F Dornaika, A Baradaaji - Neural Networks, 2023 - Elsevier
Since manually labeling images is expensive and labor intensive, in practice we often do not
have enough labeled images to train an effective classifier for the new image classification …

Fast regularized discrete optimal transport with group-sparse regularizers

Y Ida, S Kanai, K Adachi, A Kumagai… - Proceedings of the AAAI …, 2023 - ojs.aaai.org
Regularized discrete optimal transport (OT) is a powerful tool to measure the distance
between two discrete distributions that have been constructed from data samples on two …

Joint Label Propagation, Graph and Latent Subspace Estimation for Semi-supervised Classification

F Dornaika, A Baradaaji - Cognitive Computation, 2024 - Springer
Obtaining labeled images and samples is a very expensive process and can require
intensive labor. At the same time, there are often not enough labeled samples to train an …

Efficient Algorithm for K-Multiple-Means

Y Fujiwara, A Kumagai, Y Ida, M Nakano… - Proceedings of the …, 2024 - dl.acm.org
K-Multiple-Means is an extension of K-means for the clustering of multiple means used in
many applications, such as image segmentation, load balancing, and blind-source …

Radio Map Reconstruction With Adaptive Spatial Feature Learning

J Yang, W Guo - IET Signal Processing, 2024 - Wiley Online Library
Radio map reconstruction is a fundamental problem of great relevance in numerous real‐
world applications, such as network planning and fingerprint localization. Sampling the …

Fast algorithm for anchor graph hashing

Y Fujiwara, S Kanai, Y Ida, A Kumagai… - Proceedings of the VLDB …, 2021 - dl.acm.org
Anchor graph hashing is used in many applications such as cancer detection, web page
classification, and drug discovery. It computes the hash codes from the eigenvectors of the …

Fast Block Coordinate Descent for Non-Convex Group Regularizations

Y Ida, S Kanai, A Kumagai - International Conference on …, 2023 - proceedings.mlr.press
Non-convex sparse regularizations with group structures are useful tools for selecting
important feature groups. For optimization with these regularizations, block coordinate …

A sample dependent decision fusion algorithm for graph-based semi-supervised learning

A Namjoy, A Bosaghzadeh - International Journal of Engineering, 2020 - ije.ir
On many occasions, the evaluation of a phenomenon based on a single feature could not
solely be resulted in comprehensive and accurate results. Moreover, even if we have …