Hiroshi Sawada

Tomoharu Iwata, Hiroshi Sawada: Topic model for analyzing purchase data with price information. Data Min. Knowl. Discov. 26(3): 559-573 (2013)

Makoto Yamada, Gordon Wichern, Kazunobu Kondo, Masashi Sugiyama, Hiroshi Sawada: Noise adaptive optimization of matrix initialization for frequency-domain independent component analysis. Digital Signal Processing 23(1): 1-8 (2013)

Hiroshi Sawada, Hirokazu Kameoka, Shoko Araki, Naonori Ueda: Multichannel Extensions of Non-Negative Matrix Factorization With Complex-Valued Data. IEEE Transactions on Audio, Speech & Language Processing 21(5): 971-982 (2013)

Katsuhiko Ishiguro, Naonori Ueda, Hiroshi Sawada: Subset Infinite Relational Models. Journal of Machine Learning Research - Proceedings Track 22: 547-555 (2012)

Emmanuel Vincent, Shoko Araki, Fabian J. Theis, Guido Nolte, Pau Bofill, Hiroshi Sawada, Alexey Ozerov, Vikrham Gowreesunker, Dominik Lutter, Ngoc Q. K. Duong: The signal separation evaluation campaign (2007-2010): Achievements and remaining challenges. Signal Processing 92(8): 1928-1936 (2012)

Katsuhiko Ishiguro, Takeshi Yamada, Shoko Araki, Tomohiro Nakatani, Hiroshi Sawada: Probabilistic Speaker Diarization With Bag-of-Words Representations of Speaker Angle Information. IEEE Transactions on Audio, Speech & Language Processing 20(2): 447-460 (2012)

Takuma Otsuka, Katsuhiko Ishiguro, Hiroshi Sawada, Hiroshi G. Okuno: Bayesian Unification of Sound Source Localization and Separation with Permutation Resolution. AAAI 2012

Mehrez Souden, Shoko Araki, Keisuke Kinoshita, Tomohiro Nakatani, Hiroshi Sawada: A multichannel MMSE-based framework for joint blind source separation and noise reduction. ICASSP 2012: 109-112

Hiroshi Sawada, Hirokazu Kameoka, Shoko Araki, Naonori Ueda: Efficient algorithms for multichannel extensions of Itakura-Saito nonnegative matrix factorization. ICASSP 2012: 261-264

Takuma Otsuka, Katsuhiko Ishiguro, Hiroshi Sawada, Hiroshi G. Okuno: Unified auditory functions based on Bayesian topic model. IROS 2012: 2370-2376

Hitoshi Sakano, Tsukasa Ohashi, Akisato Kimura, Hiroshi Sawada, Katsuhiko Ishiguro: Extended Fisher Criterion Based on Auto-correlation Matrix Information. SSPR/SPR 2012: 409-416

Hiroshi Sawada, Shoko Araki, Shoji Makino: Underdetermined Convolutive Blind Source Separation via Frequency Bin-Wise Clustering and Permutation Alignment. IEEE Transactions on Audio, Speech & Language Processing 19(3): 516-527 (2011)

Shoko Araki, Hiroshi Sawada, Ryo Mukai, Shoji Makino: DOA Estimation for Multiple Sparse Sources with Arbitrarily Arranged Multiple Sensors. Signal Processing Systems 63(3): 265-275 (2011)

Tomoyuki Fujino, Katsuhiko Ishiguro, Hiroshi Sawada: Logitboost Extension for Early Classification of Sequences. CAIP (1) 2011: 579-588

Hiroshi Sawada, Hirokazu Kameoka, Shoko Araki, Naonori Ueda: Formulations and algorithms for multichannel complex NMF. ICASSP 2011: 229-232

Tomoharu Iwata, Shinji Wanatabe, Hiroshi Sawada: Fashion Coordinates Recommender System Using Photographs from Fashion Magazines. IJCAI 2011: 2262-2267

Kazuo Aoyama, Kazumi Saito, Hiroshi Sawada, Naonori Ueda: Fast approximate similarity search based on degree-reduced neighborhood graphs. KDD 2011: 1055-1063

Hiroshi Sawada, Hirokazu Kameoka, Shoko Araki, Naonori Ueda: New formulations and efficient algorithms for multichannel NMF. WASPAA 2011: 153-156

Tomoharu Iwata, Daichi Mochihashi, Hiroshi Sawada: Learning Common Grammar from Multilingual Corpus. ACL (Short Papers) 2010: 184-188

Katsuhiko Ishiguro, Hiroshi Sawada, Hitoshi Sakano: Multi-class Boosting for Early Classification of Sequences. BMVC 2010: 1-10

Shoko Araki, Alexey Ozerov, Vikrham Gowreesunker, Hiroshi Sawada, Fabian J. Theis, Guido Nolte, Dominik Lutter, Ngoc Q. K. Duong: The 2010 Signal Separation Evaluation Campaign (SiSEC2010): Audio Source Separation. LVA/ICA 2010: 114-122

Shoko Araki, Fabian J. Theis, Guido Nolte, Dominik Lutter, Alexey Ozerov, Vikrham Gowreesunker, Hiroshi Sawada, Ngoc Q. K. Duong: The 2010 Signal Separation Evaluation Campaign (SiSEC2010): Biomedical Source Separation. LVA/ICA 2010: 123-130

Shoko Araki, Tomohiro Nakatani, Hiroshi Sawada: Simultaneous clustering of mixing and spectral model parameters for blind sparse source separation. ICASSP 2010: 5-8

Kazuo Aoyama, Shinji Watanabe, Hiroshi Sawada, Yasuhiro Minami, Naonori Ueda, Kazumi Saito: Fast similarity search on a large speech data set with neighborhood graph indexing. ICASSP 2010: 5358-5361

Hiroshi Sawada, Jani Even, Hiroshi Saruwatari, Kiyohiro Shikano, Tomoya Takatani: Improvement of speech recognition performance for spoken-oriented robot dialog system using end-fire array. IROS 2010: 970-975

Hiroko Kato Solvang, Y. Nagahara, Shoko Araki, Hiroshi Sawada, Shoji Makino: Frequency-Domain Pearson Distribution Approach for Independent Component Analysis (FD-Pearson-ICA) in Blind Source Separation. IEEE Transactions on Audio, Speech & Language Processing 17(4): 639-649 (2009)

Shoko Araki, Tomohiro Nakatani, Hiroshi Sawada, Shoji Makino: Blind sparse source separation for unknown number of sources using Gaussian mixture model fitting with Dirichlet prior. ICASSP 2009: 33-36

Shoko Araki, Tomohiro Nakatani, Hiroshi Sawada, Shoji Makino: Stereo Source Separation and Source Counting with MAP Estimation with Dirichlet Prior Considering Spatial Aliasing Problem. ICA 2009: 742-750

Jani Even, Hiroshi Sawada, Hiroshi Saruwatari, Kiyohiro Shikano, Tomoya Takatani: Semi-blind suppression of internal noise for hands-free robot spoken dialog system. IROS 2009: 658-663

Shoko Araki, Masakiyo Fujimoto, Kentaro Ishizuka, Hiroshi Sawada, Shoji Makino: Speaker indexing and speech enhancement in real meetings / conversations. ICASSP 2008: 93-96

Stefan Winter, Walter Kellermann, Hiroshi Sawada, Shoji Makino: MAP-Based Underdetermined Blind Source Separation of Convolutive Mixtures by Hierarchical Clustering and ℓ1-Norm Minimization. EURASIP J. Adv. Sig. Proc. 2007 (2007)

Shoko Araki, Hiroshi Sawada, Ryo Mukai, Shoji Makino: Underdetermined blind sparse source separation for arbitrarily arranged multiple sensors. Signal Processing 87(8): 1833-1847 (2007)

Scott C. Douglas, Malay Gupta, Hiroshi Sawada, Shoji Makino: Spatio-Temporal FastICA Algorithms for the Blind Separation of Convolutive Mixtures. IEEE Transactions on Audio, Speech & Language Processing 15(5): 1511-1520 (2007)

Hiroshi Sawada, Shoko Araki, Ryo Mukai, Shoji Makino: Grouping Separated Frequency Components by Estimating Propagation Model Parameters in Frequency-Domain Blind Source Separation. IEEE Transactions on Audio, Speech & Language Processing 15(5): 1592-1604 (2007)

Emmanuel Vincent, Hiroshi Sawada, Pau Bofill, Shoji Makino, Justinian P. Rosca: First Stereo Audio Source Separation Evaluation Campaign: Data, Algorithms and Results. ICA 2007: 552-559

Shoji Makino, Hiroshi Sawada, Shoko Araki: Blind Audio Source Separation Based on Independent Component Analysis. ICA 2007: 843

Shoko Araki, Hiroshi Sawada, Shoji Makino: Blind Speech Separation in a Meeting Situation with Maximum SNR Beamformers. ICASSP (1) 2007: 41-44

Jan Cermak, Shoko Araki, Hiroshi Sawada, Shoji Makino: Blind Source Separation Based on a Beamformer Array and Time Frequency Binary Masking. ICASSP (1) 2007: 145-148

Kazuhiro Otsuka, Hiroshi Sawada, Junji Yamato: Automatic inference of cross-modal nonverbal interactions in multiparty conversations: "who responds to whom, when, and how?" from gaze, head gestures, and utterances. ICMI 2007: 255-262

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: The world of mushrooms: human-computer interaction prototype systems for ambient intelligence. ICMI 2007: 366-373

Hiroshi Sawada, Shoko Araki, Shoji Makino: Measuring Dependence of Bin-wise Separated Signals for Permutation Alignment in Frequency-domain BSS. ISCAS 2007: 3247-3250

Ryo Mukai, Hiroshi Sawada, Shoko Araki, Shoji Makino: Frequency-Domain Blind Source Separation of Many Speech Signals Using Near-Field and Far-Field Models. EURASIP J. Adv. Sig. Proc. 2006 (2006)

Stefan Winter, Hiroshi Sawada, Shoji Makino: Geometrical Interpretation of the PCA Subspace Approach for Overdetermined Blind Source Separation. EURASIP J. Adv. Sig. Proc. 2006 (2006)

Hiroshi Sawada, Shoko Araki, Ryo Mukai, Shoji Makino: Blind Extraction of Dominant Target Sources Using ICA and Time-Frequency Masking. IEEE Transactions on Audio, Speech & Language Processing 14(6): 2165-2173 (2006)

Hiroshi Sawada, Shoko Araki, Ryo Mukai, Shoji Makino: On Calculating the Inverse of Separation Matrix in Frequency-Domain Blind Source Separation. ICA 2006: 691-699

Shoko Araki, Hiroshi Sawada, Ryo Mukai, Shoji Makino: Underdetermined sparse source separation of convolutive mixtures with observation vector clustering. ISCAS 2006

Satoshi Ukai, Tomoya Takatani, Hiroshi Saruwatari, Kiyohiro Shikano, Ryo Mukai, Hiroshi Sawada: Multistage SIMO-Model-Based Blind Source Separation Combining Frequency-Domain ICA and Time-Domain ICA. IEICE Transactions 88-A(3): 642-650 (2005)

Shoji Makino, Hiroshi Sawada, Ryo Mukai, Shoko Araki: Blind Source Separation of Convolutive Mixtures of Speech in Frequency Domain. IEICE Transactions 88-A(7): 1640-1655 (2005)

Scott C. Douglas, Hiroshi Sawada, Shoji Makino: Natural gradient multichannel blind deconvolution and speech separation using causal FIR filters. IEEE Transactions on Speech and Audio Processing 13(1): 92-104 (2005)

Hiroshi Sawada, Shoko Araki, Ryo Mukai, Shoji Makino: Blind extraction of a dominant source from mixtures of many sources using ICA and time-frequency masking. ISCAS (6) 2005: 5882-5885

Hiroshi Sawada, Ryo Mukai, Shoko Araki, Shoji Makino: A robust and precise method for solving the permutation problem of frequency-domain blind source separation. IEEE Transactions on Speech and Audio Processing 12(5): 530-538 (2004)

Ryo Mukai, Hiroshi Sawada, Shoko Araki, Shoji Makino: Frequency Domain Blind Source Separation for Many Speech Signals. ICA 2004: 461-469

Hiroshi Sawada, Stefan Winter, Ryo Mukai, Shoko Araki, Shoji Makino: Estimating the Number of Sources for Frequency-Domain Blind Source Separation. ICA 2004: 610-617

Satoshi Ukai, Hiroshi Saruwatari, Tomoya Takatani, Kiyohiro Shikano, Ryo Mukai, Hiroshi Sawada: Evaluation of Multistage SIMO-Model-Based Blind Source Separation Combining Frequency-Domain ICA and Time-Domain ICA. ICA 2004: 626-633

Scott C. Douglas, Hiroshi Sawada, Shoji Makino: On Coefficient Delay in Natural Gradient Blind Deconvolution and Source Separation Algorithms. ICA 2004: 634-642

Stefan Winter, Hiroshi Sawada, Shoko Araki, Shoji Makino: Overcomplete BSS for Convolutive Mixtures Based on Hierarchical Clustering. ICA 2004: 652-660

Shoko Araki, Shoji Makino, Hiroshi Sawada, Ryo Mukai: Underdetermined Blind Separation of Convolutive Mixtures of Speech with Directivity Pattern Based Mask and ICA. ICA 2004: 898-905

Ryo Mukai, Hiroshi Sawada, Shoko Araki, Shoji Makino: Frequency domain blind source separation using small and large spacing sensor pairs. ISCAS (5) 2004: 1-4

Shoji Makino, Shoko Araki, Ryo Mukai, Hiroshi Sawada: Audio source separation based on independent component analysis. ISCAS (5) 2004: 668-671

Kazuo Aoyama, Hiroshi Sawada: Threshold Element-Based Symmetric Function Generators and Their Functional Extension. FPL 2002: 1092-1096

Hiroshi Sawada, Ryo Mukai, Shoko Araki, Shoji Makino: Polar coordinate based nonlinear function for frequency-domain blind source separation. ICASSP 2002: 1001-1004

Ryo Mukai, Shoko Araki, Hiroshi Sawada, Shoji Makino: Removal of residual cross-talk components in Blind Source Separation using time-delayed spectral subtraction. ICASSP 2002: 1789-1792

Takayuki Suyama, Makoto Yokoo, Hiroshi Sawada, Akira Nagoya: Solving satisfiability problems using reconfigurable computing. IEEE Trans. VLSI Syst. 9(1): 109-116 (2001)

Shigeru Yamashita, Hiroshi Sawada, Akira Nagoya: SPFD: A new method to express functional flexibility. IEEE Trans. on CAD of Integrated Circuits and Systems 19(8): 840-849 (2000)

Shigeru Yamashita, Hiroshi Sawada, Akira Nagoya: An efficient framework of using various decomposition methods to synthesize LUT networks and its evaluation. ASP-DAC 2000: 253-258

Kazuo Aoyama, Hiroshi Sawada, Akira Nagoya, Kazuo Nakajima: A Threshold Logic-Based Reconfigurable Logic Element with a New Programming Technology. FPL 2000: 665-674

Shigeru Yamashita, Hiroshi Sawada, Akira Nagoya: An Integrated Approach for Synthesizing LUT Networks. Great Lakes Symposium on VLSI 1999: 136-139

Shigeru Yamashita, Hiroshi Sawada, Akira Nagoya: New Methods to Find Optimal Non-Disjoint Bi-Decompositions. ASP-DAC 1998: 59-68

Hiroshi Sawada, Shigeru Yamashita, Akira Nagoya: Restructuring Logic Representations with Easily Detectable Simple Disjunctive Decompositions. DATE 1998: 755-759

Hiroshi Sawada, Shigeru Yamashita, Akira Nagoya: Restricted Simple Disjunctive Decompositions Based on Grouping Symmetric Variables. Great Lakes Symposium on VLSI 1997: 39-44

Makoto Yokoo, Takayuki Suyama, Hiroshi Sawada: Solving Satisfiability Problems Using Field Programmable Gate Arrays: First Results. CP 1996: 497-509

Takayuki Suyama, Makoto Yokoo, Hiroshi Sawada: Solving Satisfiability Problems on FPGAs. FPL 1996: 136-145

Shigeru Yamashita, Hiroshi Sawada, Akira Nagoya: A new method to express functional permissibilities for LUT based FPGAs and its applications. ICCAD 1996: 254-261

Takayuki Suyama, Hiroshi Sawada, Akira Nagoya: LUT-based FPGA Technology Mapping using Permissible Functions. VLSI Design 1996: 215-218

Hiroshi Sawada, Takayuki Suyama, Akira Nagoya: Logic synthesis for look-up table based FPGAs using functional decomposition and support minimization. ICCAD 1995: 353-358

Nagisa Ishiura, Hiroshi Sawada, Shuzo Yajima: Minimazation of Binary Decision Diagrams Based on Exchanges of Variables. ICCAD 1991: 472-475