| 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 | AAAI | Layered-Parameter Perturbation for Zeroth-Order Optimization of Optical Neural Networks. | Hiroshi Sawada, Kazuo Aoyama, Masaya Notomi |
| 2025 | ICML | Guided Zeroth-Order Methods for Stochastic Non-convex Problems with Decision-Dependent Distributions. | Yuya Hikima, Hiroshi Sawada, Akinori Fujino |
| 2025 | ICML | Natural Perturbations for Black-box Training of Neural Networks by Zeroth-Order Optimization. | Hiroshi Sawada, Kazuo Aoyama, Yuya Hikima |
| 2024 | DAC | Zeroth-Order Optimization of Optical Neural Networks with Linear Combination Natural Gradient and Calibrated Model. | Hiroshi Sawada, Kazuo Aoyama, Kohei Ikeda |
| 2022 | ICASSP | Multi-Frame Full-Rank Spatial Covariance Analysis for Underdetermined BSS in Reverberant Environments. | Hiroshi Sawada, Rintaro Ikeshita, Keisuke Kinoshita, Tomohiro Nakatani |
| 2021 | ICASSP | Blind and Neural Network-Guided Convolutional Beamformer for Joint Denoising, Dereverberation, and Source Separation. | Tomohiro Nakatani, Rintaro Ikeshita, Keisuke Kinoshita, Hiroshi Sawada, Shoko Araki |
| 2021 | ICCAD | Acceleration Method for Learning Fine-Layered Optical Neural Networks. | Kazuo Aoyama, Hiroshi Sawada |
| 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 | A Frequency-Domain BSS Method Based on ℓ1 Norm, Unitary Constraint, and Cayley Transform. | Satoru Emura, Hiroshi Sawada, Shoko Araki, Noboru Harada |
| 2020 | Interspeech | Computationally Efficient and Versatile Framework for Joint Optimization of Blind Speech Separation and Dereverberation. | Tomohiro Nakatani, Rintaro Ikeshita, Keisuke Kinoshita, Hiroshi Sawada, Shoko Araki |
| 2020 | SIGdial | Collection and Analysis of Dialogues Provided by Two Speakers Acting as One. | Tsunehiro Arimoto, Ryuichiro Higashinaka, Kou Tanaka, Takahito Kawanishi, Hiroaki Sugiyama, Hiroshi Sawada, Hiroshi Ishiguro |
| 2019 | ICASSP | Similarity Search-based Blind Source Separation. | Hiroshi Sawada, Kazuo Aoyama |
| 2018 | PRIMA | Improving Route Traffic Estimation by Considering Staying Population. | Hitoshi Shimizu, Tatsushi Matsubayashi, Yusuke Tanaka, Tomoharu Iwata, Naonori Ueda, Hiroshi Sawada |
| 2017 | FlAIRS | What-If Prediction via Inverse Reinforcement Learning. | Masahiro Kohjima, Tatsushi Matsubayashi, Hiroshi Sawada |
| 2017 | PAKDD | Predicting Destinations from Partial Trajectories Using Recurrent Neural Network. | Yuki Endo, Kyosuke Nishida, Hiroyuki Toda, Hiroshi Sawada |
| 2016 | ICPR | Non-negative multiple matrix factorization with Euclidean and kullback-leibler mixed divergences. | Masahiro Kohjima, Tatsushi Matsubayashi, Hiroshi Sawada |
| 2016 | WSDM | Inferring Latent Triggers of Purchases with Consideration of Social Effects and Media Advertisements. | Yusuke Tanaka, Takeshi Kurashima, Yasuhiro Fujiwara, Tomoharu Iwata, Hiroshi Sawada |
| 2015 | AAAI | Non-Linear Regression for Bag-of-Words Data via Gaussian Process Latent Variable Set Model. | Yuya Yoshikawa, Tomoharu Iwata, Hiroshi Sawada |
| 2015 | CIKM | Probabilistic Non-negative Inconsistent-resolution Matrices Factorization. | Masahiro Kohjima, Tatsushi Matsubayashi, Hiroshi Sawada |
| 2015 | ICASSP | Efficient multichannel nonnegative matrix factorization exploiting rank-1 spatial model. | Daichi Kitamura, Nobutaka Ono, Hiroshi Sawada, Hirokazu Kameoka, Hiroshi Saruwatari |
| 2015 | IV | Regularity Measure and Influence Weight for Analysis and Visualization of Consumer's Attitude. | Aki Hayashi, Masahiro Kohjima, Tatsushi Matsubayashi, Hiroshi Sawada |
| 2015 | SMC | Blocked Time-Step Algorithm for Accelerating k-Means and Fuzzy c-Means. | Hengjin Tang, Tatsushi Matsubayashi, Hiroshi Sawada |
| 2014 | AAAI | Semantic Data Representation for Improving Tensor Factorization. | Makoto Nakatsuji, Yasuhiro Fujiwara, Hiroyuki Toda, Hiroshi Sawada, Jinguang Zheng, James A. Hendler |
| 2014 | CIKM | Tracking Temporal Dynamics of Purchase Decisions via Hierarchical Time-Rescaling Model. | Hideaki Kim, Noriko Takaya, Hiroshi Sawada |
| 2014 | INFOCOM | Spatio-temporal factorization of log data for understanding network events. | Tatsuaki Kimura, Keisuke Ishibashi, Tatsuya Mori, Hiroshi Sawada, Tsuyoshi Toyono, Ken Nishimatsu, Akio Watanabe, Akihiro Shimoda, Kohei Shiomoto |
| 2014 | KDD | Probabilistic latent network visualization: inferring and embedding diffusion networks. | Takeshi Kurashima, Tomoharu Iwata, Noriko Takaya, Hiroshi Sawada |
| 2013 | ICDM | A Probabilistic Behavior Model for Discovering Unrecognized Knowledge. | Takeshi Kurashima, Tomoharu Iwata, Noriko Takaya, Hiroshi Sawada |
| 2013 | ICDM | Non-negative Multiple Tensor Factorization. | Koh Takeuchi, Ryota Tomioka, Katsuhiko Ishiguro, Akisato Kimura, Hiroshi Sawada |
| 2013 | IJCAI | Non-Negative Multiple Matrix Factorization. | Koh Takeuchi, Katsuhiko Ishiguro, Akisato Kimura, Hiroshi Sawada |
| 2013 | IJCAI | Change-Point Detection with Feature Selection in High-Dimensional Time-Series Data. | Makoto Yamada, Akisato Kimura, Futoshi Naya, Hiroshi Sawada |
| 2012 | AAAI | Bayesian Unification of Sound Source Localization and Separation with Permutation Resolution. | Takuma Otsuka, Katsuhiko Ishiguro, Hiroshi Sawada, Hiroshi G. Okuno |
| 2012 | ICASSP | Efficient algorithms for multichannel extensions of Itakura-Saito nonnegative matrix factorization. | Hiroshi Sawada, Hirokazu Kameoka, Shoko Araki, Naonori Ueda |
| 2012 | ICASSP | A multichannel MMSE-based framework for joint blind source separation and noise reduction. | Mehrez Souden, Shoko Araki, Keisuke Kinoshita, Tomohiro Nakatani, Hiroshi Sawada |
| 2012 | IROS | Unified auditory functions based on Bayesian topic model. | Takuma Otsuka, Katsuhiko Ishiguro, Hiroshi Sawada, Hiroshi G. Okuno |
| 2012 | SSPR | Extended Fisher Criterion Based on Auto-correlation Matrix Information. | Hitoshi Sakano, Tsukasa Ohashi, Akisato Kimura, Hiroshi Sawada, Katsuhiko Ishiguro |
| 2011 | CAIP | Logitboost Extension for Early Classification of Sequences. | Tomoyuki Fujino, Katsuhiko Ishiguro, Hiroshi Sawada |
| 2011 | ICASSP | Formulations and algorithms for multichannel complex NMF. | Hiroshi Sawada, Hirokazu Kameoka, Shoko Araki, Naonori Ueda |
| 2011 | IJCAI | Fashion Coordinates Recommender System Using Photographs from Fashion Magazines. | Tomoharu Iwata, Shinji Watanabe, Hiroshi Sawada |
| 2011 | KDD | Fast approximate similarity search based on degree-reduced neighborhood graphs. | Kazuo Aoyama, Kazumi Saito, Hiroshi Sawada, Naonori Ueda |
| 2010 | ACL | Learning Common Grammar from Multilingual Corpus. | Tomoharu Iwata, Daichi Mochihashi, Hiroshi Sawada |
| 2010 | BMVC | Multi-class Boosting for Early Classification of Sequences. | Katsuhiko Ishiguro, Hiroshi Sawada, Hitoshi Sakano |
| 2010 | ICASSP | Fast similarity search on a large speech data set with neighborhood graph indexing. | Kazuo Aoyama, Shinji Watanabe, Hiroshi Sawada, Yasuhiro Minami, Naonori Ueda, Kazumi Saito |
| 2010 | ICASSP | Simultaneous clustering of mixing and spectral model parameters for blind sparse source separation. | Shoko Araki, Tomohiro Nakatani, Hiroshi Sawada |
| 2010 | IROS | Improvement of speech recognition performance for spoken-oriented robot dialog system using end-fire array. | Hiroshi Sawada, Jani Even, Hiroshi Saruwatari, Kiyohiro Shikano, Tomoya Takatani |
| 2009 | ICASSP | Blind sparse source separation for unknown number of sources using Gaussian mixture model fitting with Dirichlet prior. | Shoko Araki, Tomohiro Nakatani, Hiroshi Sawada, Shoji Makino |
| 2009 | IROS | Semi-blind suppression of internal noise for hands-free robot spoken dialog system. | Jani Even, Hiroshi Sawada, Hiroshi Saruwatari, Kiyohiro Shikano, Tomoya Takatani |
| 2009 | IDA | Stereo Source Separation and Source Counting with MAP Estimation with Dirichlet Prior Considering Spatial Aliasing Problem. | Shoko Araki, Tomohiro Nakatani, Hiroshi Sawada, Shoji Makino |
| 2008 | ICASSP | Speaker indexing and speech enhancement in real meetings / conversations. | Shoko Araki, Masakiyo Fujimoto, Kentaro Ishizuka, Hiroshi Sawada, Shoji Makino |
| 2007 | ICASSP | Blind Speech Separation in a Meeting Situation with Maximum SNR Beamformers. | Shoko Araki, Hiroshi Sawada, Shoji Makino |
| 2007 | ICASSP | Blind Source Separation Based on a Beamformer Array and Time Frequency Binary Masking. | Jan Cermak, Shoko Araki, Hiroshi Sawada, Shoji Makino |
| 2007 | ICASSP | Two-Microphone Voice Activity Detection Based on the Homogeneity of the Direction of Arrival Estimates. | Juan E. Rubio, Kentaro Ishizuka, Hiroshi Sawada, Shoko Araki, Tomohiro Nakatani, Masakiyo Fujimoto |
| 2007 | ICMI | The world of mushrooms: human-computer interaction prototype systems for ambient intelligence. | Yasuhiro Minami, Minako Sawaki, Kohji Dohsaka, Ryuichiro Higashinaka, Kentaro Ishizuka, Hideki Isozaki, Tatsushi Matsubayashi, Masato Miyoshi, Atsushi Nakamura, Takanobu Oba, Hiroshi Sawada, Takeshi Yamada, Eisaku Maeda |
| 2007 | ICMI | Automatic inference of cross-modal nonverbal interactions in multiparty conversations: "who responds to whom, when, and how?" from gaze, head gestures, and utterances. | Kazuhiro Otsuka, Hiroshi Sawada, Junji Yamato |
| 2007 | ISCAS | Measuring Dependence of Bin-wise Separated Signals for Permutation Alignment in Frequency-domain BSS. | Hiroshi Sawada, Shoko Araki, Shoji Makino |
| 2006 | ICASSP | Doa Estimation for Multiple Sparse Sources with Normalized Observation Vector Clustering. | Shoko Araki, Hiroshi Sawada, Ryo Mukai, Shoji Makino |
| 2006 | ICASSP | Blind Source Separation of Many Signals in the Frequency Domain. | Ryo Mukai, Hiroshi Sawada, Shoko Araki, Shoji Makino |
| 2006 | ICASSP | Frequency Domain Blind Source Separation of a Reduced Amount of Data Using Frequency Normalization. | Enrique Robledo-Arnuncio, Hiroshi Sawada, Shoji Makino |
| 2006 | ICASSP | Solving the Permutation Problem of Frequency-Domain BSS when Spatial Aliasing Occurs with Wide Sensor Spacing. | Hiroshi Sawada, Shoko Araki, Ryo Mukai, Shoji Makino |
| 2006 | ISCAS | Underdetermined sparse source separation of convolutive mixtures with observation vector clustering. | Shoko Araki, Hiroshi Sawada, Ryo Mukai, Shoji Makino |
| 2005 | ICASSP | Reducing musical noise by a fine-shift overlap-add method applied to source separation using a time-frequency mask. | Shoko Araki, Shoji Makino, Hiroshi Sawada, Ryo Mukai |
| 2005 | ICASSP | A spatio-temporal fastICA algorithm for separating convolutive mixtures. | Scott C. Douglas, Hiroshi Sawada, Shoji Makino |
| 2005 | ICASSP | Blind extraction of a dominant source signal from mixtures of many sources [audio source separation applications]. | Hiroshi Sawada, Shoko Araki, Ryo Mukai, Shoji Makino |
| 2005 | ISCAS | Blind extraction of a dominant source from mixtures of many sources using ICA and time-frequency masking. | Hiroshi Sawada, Shoko Araki, Ryo Mukai, Shoji Makino |
| 2004 | ICASSP | Underdetermined blind separation for speech in real environments with sparseness and ICA. | Shoko Araki, Shoji Makino, Audrey Blin, Ryo Mukai, Hiroshi Sawada |
| 2004 | ICASSP | Natural gradient multichannel blind deconvolution and source separation using causal FIR filters. | Scott C. Douglas, Hiroshi Sawada, Shoji Makino |
| 2004 | ICASSP | Near-field frequency domain blind source separation for convolutive mixtures. | Ryo Mukai, Hiroshi Sawada, Shoko Araki, Shoji Makino |
| 2004 | ICASSP | Convolutive blind source separation for more than two sources in the frequency domain. | Hiroshi Sawada, Ryo Mukai, Shoko Araki, Shoji Makino |
| 2004 | ICASSP | Multistage SIMO-model-based blind source separation combining frequency-domain ICA and time-domain ICA. | Satoshi Ukai, Hiroshi Saruwatari, Tomoya Takatani, Ryo Mukai, Hiroshi Sawada |
| 2004 | Interspeech | Hierarchical clustering applied to overcomplete BSS for convolutive mixtures. | Stefan Winter, Hiroshi Sawada, Shoko Araki, Shoji Makino |
| 2004 | ISCAS | Audio source separation based on independent component analysis. | Shoji Makino, Shoko Araki, Ryo Mukai, Hiroshi Sawada |
| 2004 | ISCAS | Frequency domain blind source separation using small and large spacing sensor pairs. | Ryo Mukai, Hiroshi Sawada, Shoko Araki, Shoji Makino |
| 2003 | ICASSP | Robust real-time blind source separation for moving speakers in a room. | Ryo Mukai, Hiroshi Sawada, Shoko Araki, Shoji Makino |
| 2003 | ICASSP | A robust approach to the permutation problem of frequency-domain blind source separation. | Hiroshi Sawada, Ryo Mukai, Shoko Araki, Shoji Makino |
| 2003 | ICASSP | Geometrical understanding of the PCA subspace method for overdetermined blind source separation. | Stefan Winter, Hiroshi Sawada, Shoji Makino |
| 2002 | FPL | Threshold Element-Based Symmetric Function Generators and Their Functional Extension. | Kazuo Aoyama, Hiroshi Sawada |
| 2002 | ICASSP | Removal of residual cross-talk components in Blind Source Separation using time-delayed spectral subtraction. | Ryo Mukai, Shoko Araki, Hiroshi Sawada, Shoji Makino |
| 2002 | ICASSP | Polar coordinate based nonlinear function for frequency-domain blind source separation. | Hiroshi Sawada, Ryo Mukai, Shoko Araki, Shoji Makino |
| 2000 | ASPDAC | An efficient framework of using various decomposition methods to synthesize LUT networks and its evaluation. | Shigeru Yamashita, Hiroshi Sawada, Akira Nagoya |
| 2000 | FPL | A Threshold Logic-Based Reconfigurable Logic Element with a New Programming Technology. | Kazuo Aoyama, Hiroshi Sawada, Akira Nagoya, Kazuo Nakajima |
| 1998 | ASPDAC | New Methods to Find Optimal Non-Disjoint Bi-Decompositions. | Shigeru Yamashita, Hiroshi Sawada, Akira Nagoya |
| 1998 | DATE | Restructuring Logic Representations with Easily Detectable Simple Disjunctive Decompositions. | Hiroshi Sawada, Shigeru Yamashita, Akira Nagoya |
| 1996 | CP | Solving Satisfiability Problems Using Field Programmable Gate Arrays: First Results. | Makoto Yokoo, Takayuki Suyama, Hiroshi Sawada |
| 1996 | FPL | Solving Satisfiability Problems on FPGAs. | Takayuki Suyama, Makoto Yokoo, Hiroshi Sawada |
| 1996 | ICCAD | A new method to express functional permissibilities for LUT based FPGAs and its applications. | Shigeru Yamashita, Hiroshi Sawada, Akira Nagoya |
| 1996 | VLSID | LUT-based FPGA Technology Mapping using Permissible Functions. | Takayuki Suyama, Hiroshi Sawada, Akira Nagoya |
| 1995 | ICCAD | Logic synthesis for look-up table based FPGAs using functional decomposition and support minimization. | Hiroshi Sawada, Takayuki Suyama, Akira Nagoya |
| 1991 | ICCAD | Minimazation of Binary Decision Diagrams Based on Exchanges of Variables. | Nagisa Ishiura, Hiroshi Sawada, Shuzo Yajima |