| 2026 | AAAI | FedPM: Federated Learning Using Second-order Optimization with Preconditioned Mixing of Local Parameters. | Hiro Ishii, Kenta Niwa, Hiroshi Sawada, Akinori Fujino, Noboru Harada, Rio Yokota |
| 2025 | ICML | Plausible Token Amplification for Improving Accuracy of Differentially Private In-Context Learning Based on Implicit Bayesian Inference. | Yusuke Yamasaki, Kenta Niwa, Daiki Chijiwa, Takumi Fukami, Takayuki Miura |
| 2024 | AAAI | Optimal Transport with Cyclic Symmetry. | Shoichiro Takeda, Yasunori Akagi, Naoki Marumo, Kenta Niwa |
| 2024 | ICLR | On Accelerating Diffusion-Based Sampling Processes via Improved Integration Approximation. | Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn |
| 2024 | ICLR | Simple Minimax Optimal Byzantine Robust Algorithm for Nonconvex Objectives with Uniform Gradient Heterogeneity. | Tomoya Murata, Kenta Niwa, Takumi Fukami, Iifan Tyou |
| 2023 | CVPR | Lookahead Diffusion Probabilistic Models for Refining Mean Estimation. | Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn |
| 2022 | CVPR | Bilateral Video Magnification Filter. | Shoichiro Takeda, Kenta Niwa, Mariko Isogawa, Shinya Shimizu, Kazuki Okami, Yushi Aono |
| 2021 | ICML | Asynchronous Decentralized Optimization With Implicit Stochastic Variance Reduction. | Kenta Niwa, Guoqiang Zhang, W. Bastiaan Kleijn, Noboru Harada, Hiroshi Sawada, Akinori Fujino |
| 2020 | ICASSP | Projected Weight Regularization to Improve Neural Network Generalization. | Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn |
| 2020 | KDD | Edge-consensus Learning: Deep Learning on P2P Networks with Nonhomogeneous Data. | Kenta Niwa, Noboru Harada, Guoqiang Zhang, W. Bastiaan Kleijn |
| 2019 | ICASSP | Fast Edge-consensus Computing Based on Bregman Monotone Operator Splitting. | Kenta Niwa, Guoqiang Zhang, W. Bastiaan Kleijn |
| 2019 | ICASSP | Non-negative Matrix Factorization Using Bregman Monotone Operator Splitting. | Kenta Niwa, Noboru Harada |
| 2019 | ICASSP | Function Designable Beamformer Based on Probabilistic Assumptions on Filter and Its Auxiliary Variables. | Ryotaro Sato, Kenta Niwa, Noboru Harada |
| 2019 | MMSP | Improving speech intelligibility using microphones on behind the ear hearing aids. | Yusuke Hioka, Kei Kobayashi, Kenta Niwa |
| 2017 | ICASSP | DNN-based source enhancement self-optimized by reinforcement learning using sound quality measurements. | Yuma Koizumi, Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi, Yoichi Haneda |
| 2017 | ICASSP | Supervised source enhancement composed of nonnegative auto-encoders and complementarity subtraction. | Kenta Niwa, Yuma Koizumi, Tomoko Kawase, Kazunori Kobayashi, Yusuke Hioka |
| 2017 | ICASSP | Music staging AI. | Kenta Niwa, Kento Ohtani, Kazuya Takeda |
| 2016 | ICASSP | Estimating direct-to-reverberant ratio mapped from power spectral density using deep neural network. | Yusuke Hioka, Kenta Niwa |
| 2016 | ICASSP | Real-time integration of statistical model-based speech enhancement with unsupervised noise PSD estimation using microphone array. | Tomoko Kawase, Kenta Niwa, Masakiyo Fujimoto, Noriyoshi Kamado, Kazunori Kobayashi, Shoko Araki, Tomohiro Nakatani |
| 2016 | ICASSP | Integrated approach of feature extraction and sound source enhancement based on maximization of mutual information. | Yuma Koizumi, Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi, Hitoshi Ohmuro |
| 2016 | ICASSP | Pinpoint extraction of distant sound source based on DNN mapping from multiple beamforming outputs to prior SNR. | Kenta Niwa, Yuma Koizumi, Tomoko Kawase, Kazunori Kobayashi, Yusuke Hioka |
| 2016 | ICASSP | Binaural sound generation corresponding to omnidirectional video view using angular region-wise source enhancement. | Kenta Niwa, Yuma Koizumi, Kazunori Kobayashi, Hisashi Uematsu |
| 2015 | ICASSP | Microphone array for increasing mutual information between sound sources and observation signals. | Kenta Niwa, Tatsuya Kako, Kazunori Kobayashi |
| 2014 | ICASSP | Close-talking spherical microphone array using sound pressure interpolation based on spherical harmonic expansion. | Yoichi Haneda, Ken'ichi Furuya, Shoichi Koyama, Kenta Niwa |
| 2012 | ICASSP | Estimating sound source depth using a small-size array. | Satoshi Esaki, Kenta Niwa, Takanori Nishino, Kazuya Takeda |
| 2012 | ICASSP | Telescopic microphone array using reflector for segregating target source from noises in same direction. | Kenta Niwa, Yusuke Hioka, Sumitaka Sakauchi, Ken'ichi Furuya, Yoichi Haneda |
| 2012 | ICASSP | Diffused sensing for sharp directivity microphone array. | Kenta Niwa, Sumitaka Sakauchi, Ken'ichi Furuya, Manabu Okamoto, Yoichi Haneda |
| 2010 | ICASSP | Estimating direct-to-reverberant energy ratio based on spatial correlation model segregating direct sound and reverberation. | Yusuke Hioka, Kenta Niwa, Sumitaka Sakauchi, Ken'ichi Furuya, Youichi Haneda |
| 2010 | ICASSP | Estimation of sound source orientation using eigenspace of spatial correlation matrix. | Kenta Niwa, Yusuke Hioka, Sumitaka Sakauchi, Ken'ichi Furuya, Youichi Haneda |
| 2008 | ICASSP | Encoding large array signals into a 3D sound field representation for selective listening point audio based on blind source separation. | Kenta Niwa, Takanori Nishino, Kazuya Takeda |
| 2008 | MMSP | 3DAV integrated system featuring arbitrary listening-point and viewpoint generation. | Mehrdad Panahpour Tehrani, Kenta Niwa, Norishige Fukushima, Yasushi Hirano, Toshiaki Fujii, Masayuki Tanimoto, Kazuya Takeda, Kenji Mase, Akio Ishikawa, Shigeyuki Sakazawa, Atsushi Koike |