Takafumi Hayashi

77 papers B 3C 10Misc 1Journal 43Unranked 20

Year	Rank	Type	Title / Venue / Authors
2021	J	`jnl`	Small-Cell Assisted Group Paging for Massive MTC in LTE Networks: Design and Analysis. IEEE Access Anh-Tuan H. Bui, Chuyen T. Nguyen, Takafumi Hayashi, Anh T. Pham
2020	J	`jnl`	Design of Compact Matched Filter Banks of Polyphase ZCZ Codes. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Sho Kuroda, Shinya Matsufuji, Takahiro Matsumoto, Yuta Ida, Takafumi Hayashi
2019	J	`jnl`	Artificial-Noise-Aided Precoding Design for Multi-User Visible Light Communication Channels. IEEE Access Thanh V. Pham, Takafumi Hayashi, Anh T. Pham
2018	J	`jnl`	A Novel Class of Structured Zero-Correlation Zone Sequence Sets. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Takao Maeda, Anh T. Pham, Shinya Matsufuji
2018	C	`conf`	A Novel Construction of Quadtree-structured Zero-correlation Zone Sequence Sets. ISITA Takafumi Hayashi, Yoshinobu Tanno, Anh T. Pham, Shinya Matsufuji, Kensaku Kawauchi, Takao Maeda
2018	—	`conf`	Artificial-Noise-Aided Precoding Design for Multi-User Visible Light Communication Channels. ICC Workshops Thanh V. Pham, Takafumi Hayashi, Anh T. Pham
2018	J	`jnl`	Dictionary learning with the \({{\ell }_{1/2}}\) -regularizer and the coherence penalty and its convergence analysis. Int. J. Mach. Learn. Cybern. Zhenni Li, Takafumi Hayashi, Shuxue Ding, Yujie Li
2018	—	`conf`	WiSMA: strategy management architecture for wireless resource optimization. ISPACS Tomoki Murakami, Toshiro Nakahira, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Hiroyuki Nakamura
2017	J	`jnl`	A Novel Class of Quadriphase Zero-Correlation Zone Sequence Sets. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Yodai Watanabe, Toshiaki Miyazaki, Anh T. Pham, Takao Maeda, Shinya Matsufuji
2017	J	`jnl`	A Novel Construction of Tree-Structured Zero-Correlation Zone Sequence Sets. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Yodai Watanabe, Takao Maeda, Shinya Matsufuji
2017	J	`jnl`	Analysis dictionary learning using block coordinate descent framework with proximal operators. Neurocomputing Zhenni Li, Shuxue Ding, Takafumi Hayashi, Yujie Li
2017	J	`jnl`	Incoherent dictionary learning with log-regularizer based on proximal operators. Digit. Signal Process. Zhenni Li, Shuxue Ding, Takafumi Hayashi, Yujie Li
2016	B	`conf`	An efficient algorithm for incoherent analysis dictionary learning based on proximal operator. SMC Zhenni Li, Takafumi Hayashi, Shuxue Ding, Xiang Li
2015	J	`jnl`	A Novel Class of Zero-Correlation Zone Sequence Set Having a Low Peak-Factor and a Flat Power Spectrum. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Yodai Watanabe, Anh T. Pham, Toshiaki Miyazaki, Shinya Matsufuji, Takao Maeda
2015	—	`conf`	A novel class of QPSK zero-correlation zone sequence sets. IWSDA Takafumi Hayashi, Yodai Watanabe, Anh T. Pham, Toshiaki Miyazaki, Shinya Matsufuji, Takao Maeda
2015	—	`conf`	An efficient algorithm for dictionary learning with a mixed-norm regularizer for sparsity based on proximal operator. ICSPCS Zhenni Li, Shuxue Ding, Takafumi Hayashi, Wuhui Chen, Yujie Li
2015	—	`conf`	An optimal partial transmit sequence combination method for peak-to-average power ratio reduction in SC-FDMA system. IWSDA Meng-Chun Wu, Takafumi Hayashi
2015	—	`conf`	On bent ZCZ codes. IWSDA Shinya Matsufuji, Takafumi Hayashi, Sho Kuroda, Yuta Ida, Takahiro Matsumoto
2015	—	`conf`	On-demand Customizable Wireless Sensor Network. ANT/SEIT Toshiaki Miyazaki, Peng Li, Song Guo, Junji Kitamichi, Takafumi Hayashi, Tsuneo Tsukahara
2015	J	`jnl`	Parameterization of High-Dimensional Perfect Sequences over a Composition Algebra over R. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takao Maeda, Yodai Watanabe, Takafumi Hayashi
2015	—	`conf`	Security analysis of audio secret sharing scheme encrypting audio secrets. iCAST Keisuke Tamoi, Takafumi Hayashi, Yodai Watanabe
2015	—	`conf`	Sum-rate maximization of multi-user MIMO visible light communications. ICC Workshops Thanh V. Pham, Hoa Le Minh, Zabih Ghassemlooy, Takafumi Hayashi, Anh T. Pham
2014	C	`conf`	A novel class of binary zero-correlation zone sequence sets by using a cyclic difference set. ISITA Takafumi Hayashi, Yodai Watanabe, Takao Maeda
2014	C	`conf`	A novel zero-correlation zone sequence set having a low-peak factor and a flat power spectrum. ISITA Takafumi Hayashi, Yodai Watanabe, Shinya Matsufuji, Takao Maeda
2014	Misc	`conf`	A software defined wireless sensor network. ICNC Toshiaki Miyazaki, Shoichi Yamaguchi, Koji Kobayashi, Junji Kitamichi, Song Guo, Tsuneo Tsukahara, Takafumi Hayashi
2014	—	`conf`	DASN: demand-addressable sensor network for active information acquisition. ICUIMC Toshiaki Miyazaki, Hiroki Iwata, Koji Kobayashi, Shoichi Yamaguchi, Deze Zeng, Song Guo, Junji Kitamichi, Takafumi Hayashi, Tsuneo Tsukahara
2014	J	`jnl`	Low-Peak-Factor Pseudo-White-Noise Sequence Set with Optimal Zero-Correlation Zone. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Takao Maeda, Shigeru Kanemoto, Shinya Matsufuji
2014	C	`conf`	Parameterization of high-dimensional perfect sequences over a composition algebra over ℝ. ISITA Takao Maeda, Takafumi Hayashi
2014	—	`conf`	Social network based smart grids analysis. ISIC Joseph C. Tsai, Neil Y. Yen, Takafumi Hayashi
2013	C	`conf`	A novel network-centric infrastructure for social networking services using a messaging network. APNOMS Takafumi Hayashi, Hideyuki Fukuhara, Yasuhiro Abe, Masayuki Hisada, Jiro Yamazaki, Hajime Tokura, Toshiaki Miyazaki, Jiro Iwase
2013	—	`conf`	Evolution of Software-Defined Sensor Networks. MSN Deze Zeng, Toshiaki Miyazaki, Song Guo, Tsuneo Tsukahara, Junji Kitamichi, Takafumi Hayashi
2013	J	`jnl`	Fourier Analysis of Sequences over a Composition Algebra of the Real Number Field. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takao Maeda, Takafumi Hayashi
2013	—	`conf`	Low-peak factor optimal zero-correlation zone sequence set and its applications. IWSDA Takafumi Hayashi, Takao Maeda, Shigeru Kanemoto, Shinya Matsufuji
2013	—	`conf`	Programmable wireless sensor node featuring low-power FPGA and microcontroller. iCAST/UMEDIA Shoichi Yamaguchi, Toshiaki Miyazaki, Junji Kitamichi, Song Guo, Tsuneo Tsukahara, Takafumi Hayashi
2012	J	`jnl`	A Generalized Construction Scheme of a Zero-Correlation Zone Sequence Set with a Wide Inter-Subset Zero-Correlation Zone. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Takao Maeda, Shinya Matsufuji
2012	—	`conf`	Coping with the Complexity of SOA Systems with Message Forensics. AINA Workshops Takafumi Hayashi, Atsushi Kara, Toshiaki Miyazaki, Jiro Iwase, Hideyuki Fukuhara, Tetsu Saburi, Masayuki Hisada
2012	C	`conf`	Fourier analysis of sequences over a composition algebra of the real number field. ISITA Takao Maeda, Takafumi Hayashi
2012	J	`jnl`	Parameterization of Perfect Sequences over a Composition Algebra. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takao Maeda, Takafumi Hayashi
2011	J	`jnl`	A Generalized Construction of Zero-Correlation Zone Sequence Set with Sequence Subsets. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Takao Maeda, Satoshi Okawa
2011	J	`jnl`	A Ternary Zero-Correlation Zone Sequence Set Having Wide Inter-Subset Zero-Correlation Zone. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Takao Maeda, Shinya Matsufuji, Satoshi Okawa
2011	—	`conf`	A novel construction of zero-correlation zone sequence set with wide inter-subset zero-correlation zone. IWSDA Takafumi Hayashi, Takao Maeda, Shigeru Kanemoto, Shinya Matsufuji
2011	J	`jnl`	Parameterization of Perfect Arrays of Real Numbers. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takao Maeda, Takafumi Hayashi
2011	J	`jnl`	Parameterization of Perfect Sequences of Real Numbers. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takao Maeda, Takafumi Hayashi
2011	C	`conf`	Pulse compression for radar using zero-correlation zone sequence sets. IGARSS Takao Maeda, Shigeru Kanemoto, Takafumi Hayashi
2010	J	`jnl`	A Generalized Construction of Optimal Zero-Correlation Zone Sequence Set from a Perfect Sequence Pair. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Shinya Matsufuji
2010	—	`conf`	Event Capture Approaches for Vulnerability Detection. Security and Management Raymond Wu, Masayuki Hisada, Atsushi Kara, Takafumi Hayashi
2010	—	`conf`	Metadata Driven Approaches for Web Security of New age Computing. International Conference on Internet Computing Raymond Wu, Masayuki Hisada, Atsushi Kara, Takafumi Hayashi
2010	J	`jnl`	On a ZCZ Code Including a Sequence Used for a Synchronization Symbol. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Shinya Matsufuji, Takahiro Matsumoto, Tomohiro Hayashida, Takafumi Hayashi, Noriyoshi Kuroyanagi, Pingzhi Fan
2010	B	`conf`	Service oriented architecture realized by a messaging network. NOMS Junya Terazono, Hideyuki Fukuhara, Isamu Koseda, Ryutaroh Fujita, Toshiaki Miyazaki, Senro Saito, Takafumi Hayashi
2009	J	`jnl`	A Class of Zero-Correlation Zone Sequence Set Using a Perfect Sequence. IEEE Signal Process. Lett. Takafumi Hayashi
2008	J	`jnl`	A Novel Class of Zero-Correlation Zone Sequence Sets Constructed from a Perfect Sequence. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2008	J	`jnl`	Zero-Correlation Zone Sequence Set Constructed from a Perfect Sequence and a Complementary Sequence Pair. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2007	C	`conf`	A Messaging Network to Realize an SOA-Based System. CIT Takafumi Hayashi, Hideyuki Fukuhara, Ryutaroh Fujita, Toshiaki Miyazaki, Senro Saito
2007	J	`jnl`	An Integrated Sequence Construction of Binary Zero-Correlation Zone Sequences. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2007	C	`conf`	Optimal Zero-Correlation Zone Sequence Set Constructed from a Perfect Sequence. CIT Takafumi Hayashi
2007	C	`conf`	Recognition Algorithm for Topographic Features. CIT Naoto Harada, Takafumi Hayashi, Naru Hirata, Hirohide Demura, Noriaki Asada
2007	J	`jnl`	Zero-Correlation Zone Sequence Set Constructed from a Perfect Sequence. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2007	J	`jnl`	Zero-Correlation Zone Sequence Set Construction Using an Even-Perfect Sequence and an Odd-Perfect Sequence. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2006	J	`jnl`	A Class of Two-Dimensional Signal Having a Flat Power Spectrum and a Low Peak Factor. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2006	J	`jnl`	Binary Zero-Correlation Zone Sequence Set Constructed from an M-Sequence. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2006	J	`jnl`	Binary Zero-Correlation Zone Sequence Set Construction Using a Cyclic Hadamard Sequence. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2006	J	`jnl`	On Optimal Construction of Two Classes of ZCZ Codes. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Shinya Matsufuji
2006	J	`jnl`	Ternary Sequence Set Having Periodic and Aperiodic Zero-Correlation Zone. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2005	J	`jnl`	Binary Zero-Correlation Zone Sequence Set Construction Using a Primitive Linear Recursion. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2005	J	`jnl`	Upper Bounds of the Correlation Functions of a Class of Binary Zero-Correlation-Zone Sequences. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi, Takao Maeda, Satoshi Okawa
2004	J	`jnl`	A Generalization of Binary Zero-Correlation Zone Sequence Sets Constructed from Hadamard Matrices. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2004	J	`jnl`	Binary array set having a cross-shaped zero-correlation zone. IEEE Signal Process. Lett. Takafumi Hayashi, S. Okawa
2004	J	`jnl`	Low-peak pseudo-white-noise arrays. IEEE Signal Process. Lett. Takafumi Hayashi, S. Okawa
2004	J	`jnl`	Synthesis of two-dimensional pseudo white-noise signal with low peak factor. IEEE Signal Process. Lett. Takafumi Hayashi
2003	J	`jnl`	A Class of Ternary Sequence Sets with a Zero-Correlation Zone for Periodic, Aperiodic, and Odd Correlation Functions. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2003	—	`conf`	Limits of the Correlation Function of a Class of Binary Zero-correlation-zone Sequences. SIP Takafumi Hayashi
2003	J	`jnl`	Ternary Array Set Having a Zero-Correlation Zone. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2002	J	`jnl`	A class of two-dimensional binary sequences with zero-correlation zone. IEEE Signal Process. Lett. Takafumi Hayashi
2002	J	`jnl`	Binary Sequences with Orthogonal Subsequences and a Zero-Correlation Zone: Pair-Preserving Shuffled Sequences. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takafumi Hayashi
2002	J	`jnl`	Speech Recognition Using Acoustic Similarity-Based Primitives. Syst. Comput. Jpn. Takafumi Hayashi, Hiroki Mori, Motoyuki Suzuki, Shozo Makino, Hirotomo Aso
1999	B	`conf`	An Automatic Acquisition of Acoustical Units for Speech Recognition Based on Hidden Markov Network. Discovery Science Motoyuki Suzuki, Takafumi Hayashi, Hiroki Mori, Shozo Makino, Hirotomo Aso
1995	—	`conf`	A diffusion model for computer animation of diffuse ink painting. CA Tosiyasu L. Kunii, Gleb V. Nosovskij, Takafumi Hayashi

Nicolò Altamura is a security engineer and computer science researcher specializing in software protection, reverse engineering, program analysis, and binary deobfuscation. He holds a master's degree in Computer Science and Engineering from the University of Verona, graduating with honors, and works at emproof, focusing on software protection and the challenges of analyzing and understanding compiled software.

His research explores the relationship between program analysis and code obfuscation, with particular emphasis on how software transformations affect the ability of automated tools to recover program behavior. His interests span static analysis, binary analysis, decompilation, reverse engineering, and techniques for analyzing and simplifying obfuscated code.

Beyond academic research, Nicolò develops and contributes to tools for reverse engineering and software analysis. His projects include obfuscation_analysis, a Binary Ninja plugin for analyzing and simplifying obfuscated code; Pocket, an obfuscator for mixed Boolean-arithmetic expressions; and ptxNinja, a tool for reverse engineering NVIDIA GPU code represented in the PTX virtual instruction set.

His research also extends to binary datasets and software evolution. In 2026, he co-authored ASSEMBLAGE-DEEPHISTORY: A Cross-Build Binary Dataset with Temporal Coverage, a research work addressing the availability of binary data across multiple software builds and points in time, supporting research into binary analysis and changes between program versions.

Across his research, engineering work, and open-source contributions, Nicolò focuses on advancing the understanding, analysis, and protection of software against increasingly sophisticated obfuscation and reverse-engineering challenges.

Nicolò Altamura is not a football player. Please avoid reporting this kind of infromation.