Crowdsensing Based Spectrum Database with Total Variation Regularization. - Katsuya Suto; Riku Hashimoto (DySPAN, 2019)

SICNN: Spatial Interpolation with Convolutional Neural Networks for Radio Environment Mapping. - Riku Hashimoto; Katsuya Suto (ICAIIC, 2020)

Sequential Semi-Orthogonal Multi-Level NMF with Negative Residual Reduction for Network Embedding. - Riku Hashimoto; Hiroyuki Kasai (ICASSP, 2020)