Takao Murakami

80 papers A* 6A 1B 8C 4Misc 1Journal 47Unranked 13

Year	Rank	Type	Title / Venue / Authors
2026	—	`conf`	Enhancing Certified Robustness in Few-Shot Classification with Contrastive Loss and Defensive Noise in Fine-Tuning. ICISSP (2) Hiroya Kato, Seira Hidano, Takao Murakami, Hideitsu Hino
2025	J	`jnl`	Augmented Shuffle Differential Privacy Protocols for Large-Domain Categorical and Key-Value Data. CoRR Takao Murakami, Yuichi Sei, Reo Eriguchi
2025	A*	`conf`	Augmented Shuffle Protocols for Accurate and Robust Frequency Estimation Under Differential Privacy. SP Takao Murakami, Yuichi Sei, Reo Eriguchi
2025	J	`jnl`	Augmented Shuffle Protocols for Accurate and Robust Frequency Estimation under Differential Privacy. CoRR Takao Murakami, Yuichi Sei, Reo Eriguchi
2025	J	`jnl`	Data Poisoning Attacks to Locally Differentially Private Range Query Protocols. CoRR Ting-Wei Liao, Chih-Hsun Lin, Yu-Lin Tsai, Takao Murakami, Chia-Mu Yu, Jun Sakuma, Chun-Ying Huang, Hiroaki Kikuchi
2025	J	`jnl`	Visualizing differentially private mechanisms with physical cards. Theor. Comput. Sci. Reo Eriguchi, Kazumasa Shinagawa, Takao Murakami
2024	A*	`conf`	CARGO: Crypto-Assisted Differentially Private Triangle Counting Without Trusted Servers. ICDE Shang Liu, Yang Cao, Takao Murakami, Jinfei Liu, Masatoshi Yoshikawa
2024	Misc	`conf`	Card-Based Cryptography Meets Differential Privacy. FUN Reo Eriguchi, Kazumasa Shinagawa, Takao Murakami
2024	J	`jnl`	Degree-Preserving Randomized Response for Graph Neural Networks under Local Differential Privacy. Trans. Data Priv. Seira Hidano, Takao Murakami
2024	J	`jnl`	Federated Graph Analytics with Differential Privacy. CoRR Shang Liu, Yang Cao, Takao Murakami, Weiran Liu, Seng Pei Liew, Tsubasa Takahashi, Jinfei Liu, Masatoshi Yoshikawa
2024	J	`jnl`	Synthesizing differentially private location traces including co-locations. Int. J. Inf. Sec. Jun Narita, Takao Murakami, Hideitsu Hino, Masakatsu Nishigaki, Tetsushi Ohki
2023	J	`jnl`	Automatic Tuning of Privacy Budgets in Input-Discriminative Local Differential Privacy. IEEE Internet Things J. Takao Murakami, Yuichi Sei
2023	J	`jnl`	CARGO: Crypto-Assisted Differentially Private Triangle Counting without Trusted Servers. CoRR Shang Liu, Yang Cao, Takao Murakami, Jinfei Liu, Masatoshi Yoshikawa
2023	J	`jnl`	Designing a Location Trace Anonymization Contest. Proc. Priv. Enhancing Technol. Takao Murakami, Hiromi Arai, Koki Hamada, Takuma Hatano, Makoto Iguchi, Hiroaki Kikuchi, Atsushi Kuromasa, Hiroshi Nakagawa, Yuichi Nakamura, Kenshiro Nishiyama, Ryo Nojima, Hidenobu Oguri, Chiemi Watanabe, Akira Yamada, Takayasu Yamaguchi, Yuji Yamaoka
2023	B	`conf`	Two-Dimensional Dynamic Fusion for Continuous Authentication. IJCB Nuttapong Attrapadung, Goichiro Hanaoka, Haochen M. Kotoi-Xie, Takahiro Matsuda, Takumi Moriyama, Takao Murakami, Hidenori Nakamura, Jacob C. N. Schuldt, Masaaki Tokuyama, Jing Zhang
2023	J	`jnl`	Two-Dimensional Dynamic Fusion for Continuous Authentication. CoRR Nuttapong Attrapadung, Goichiro Hanaoka, Haochen M. Kotoi-Xie, Takahiro Matsuda, Takumi Moriyama, Takao Murakami, Hidenori Nakamura, Jacob C. N. Schuldt, Masaaki Tokuyama, Jing Zhang
2022	B	`conf`	A Crypto-Assisted Approach for Publishing Graph Statistics with Node Local Differential Privacy. IEEE Big Data Shang Liu, Yang Cao, Takao Murakami, Masatoshi Yoshikawa
2022	J	`jnl`	A Crypto-Assisted Approach for Publishing Graph Statistics with Node Local Differential Privacy. CoRR Shang Liu, Yang Cao, Takao Murakami, Masatoshi Yoshikawa
2022	A*	`conf`	Communication-Efficient Triangle Counting under Local Differential Privacy. USENIX Security Symposium Jacob Imola, Takao Murakami, Kamalika Chaudhuri
2022	J	`jnl`	Degree-Preserving Randomized Response for Graph Neural Networks under Local Differential Privacy. CoRR Seira Hidano, Takao Murakami
2022	J	`jnl`	Differentially Private Subgraph Counting in the Shuffle Model. CoRR Jacob Imola, Takao Murakami, Kamalika Chaudhuri
2022	A*	`conf`	Differentially Private Triangle and 4-Cycle Counting in the Shuffle Model. CCS Jacob Imola, Takao Murakami, Kamalika Chaudhuri
2021	J	`jnl`	Communication-Efficient Triangle Counting under Local Differential Privacy. CoRR Jacob Imola, Takao Murakami, Kamalika Chaudhuri
2021	J	`jnl`	Designing a Location Trace Anonymization Contest. CoRR Takao Murakami, Hiromi Arai, Koki Hamada, Takuma Hatano, Makoto Iguchi, Hiroaki Kikuchi, Atsushi Kuromasa, Hiroshi Nakagawa, Yuichi Nakamura, Kenshiro Nishiyama, Ryo Nojima, Hidenobu Oguri, Chiemi Watanabe, Akira Yamada, Takayasu Yamaguchi, Yuji Yamaoka
2021	—	`conf`	Locality Sensitive Hashing with Extended Differential Privacy. ESORICS (2) Natasha Fernandes, Yusuke Kawamoto, Takao Murakami
2021	A*	`conf`	Locally Differentially Private Analysis of Graph Statistics. USENIX Security Symposium Jacob Imola, Takao Murakami, Kamalika Chaudhuri
2021	J	`jnl`	Privacy-Preserving Multiple Tensor Factorization for Synthesizing Large-Scale Location Traces with Cluster-Specific Features. Proc. Priv. Enhancing Technol. Takao Murakami, Koki Hamada, Yusuke Kawamoto, Takuma Hatano
2021	—	`conf`	Synthesizing Privacy-Preserving Location Traces Including Co-locations. DPM/CBT@ESORICS Jun Narita, Yayoi Suganuma, Masakatsu Nishigaki, Takao Murakami, Tetsushi Ohki
2021	J	`jnl`	Toward Evaluating Re-identification Risks in the Local Privacy Model. Trans. Data Priv. Takao Murakami, Kenta Takahashi
2021	B	`conf`	TransMIA: Membership Inference Attacks Using Transfer Shadow Training. IJCNN Seira Hidano, Takao Murakami, Yusuke Kawamoto
2020	J	`jnl`	Exposing Private User Behaviors of Collaborative Filtering via Model Inversion Techniques. Proc. Priv. Enhancing Technol. Seira Hidano, Takao Murakami, Shuichi Katsumata, Shinsaku Kiyomoto, Goichiro Hanaoka
2020	J	`jnl`	Locality Sensitive Hashing with Extended Differential Privacy. CoRR Natasha Fernandes, Yusuke Kawamoto, Takao Murakami
2020	J	`jnl`	Locally Differentially Private Analysis of Graph Statistics. CoRR Jacob Imola, Takao Murakami, Kamalika Chaudhuri
2020	J	`jnl`	Toward Evaluating Re-identification Risks in the Local Privacy Model. CoRR Takao Murakami, Kenta Takahashi
2020	J	`jnl`	TransMIA: Membership Inference Attacks Using Transfer Shadow Training. CoRR Seira Hidano, Yusuke Kawamoto, Takao Murakami
2019	J	`jnl`	Cancelable Permutation-Based Indexing for Secure and Efficient Biometric Identification. IEEE Access Takao Murakami, Ryo Fujita, Tetsushi Ohki, Yosuke Kaga, Masakazu Fujio, Kenta Takahashi
2019	J	`jnl`	Cancelable indexing based on low-rank approximation of correlation-invariant random filtering for fast and secure biometric identification. Pattern Recognit. Lett. Takao Murakami, Tetsushi Ohki, Yosuke Kaga, Masakazu Fujio, Kenta Takahashi
2019	—	`conf`	Improved Security Evaluation Techniques for Imperfect Randomness from Arbitrary Distributions. Public Key Cryptography (1) Takahiro Matsuda, Kenta Takahashi, Takao Murakami, Goichiro Hanaoka
2019	J	`jnl`	Improved Security Evaluation Techniques for Imperfect Randomness from Arbitrary Distributions. IACR Cryptol. ePrint Arch. Takahiro Matsuda, Kenta Takahashi, Takao Murakami, Goichiro Hanaoka
2019	—	`conf`	Local Distribution Obfuscation via Probability Coupling Allerton Yusuke Kawamoto, Takao Murakami
2019	J	`jnl`	Local Distribution Obfuscation via Probability Coupling. CoRR Yusuke Kawamoto, Takao Murakami
2019	—	`conf`	Local Obfuscation Mechanisms for Hiding Probability Distributions. ESORICS (1) Yusuke Kawamoto, Takao Murakami
2019	J	`jnl`	Privacy-Preserving Multiple Tensor Factorization for Synthesizing Large-Scale Location Traces. CoRR Takao Murakami, Koki Hamada, Yusuke Kawamoto, Takuma Hatano
2019	J	`jnl`	Signature schemes with a fuzzy private key. Int. J. Inf. Sec. Kenta Takahashi, Takahiro Matsuda, Takao Murakami, Goichiro Hanaoka, Masakatsu Nishigaki
2019	A*	`conf`	Utility-Optimized Local Differential Privacy Mechanisms for Distribution Estimation. USENIX Security Symposium Takao Murakami, Yusuke Kawamoto
2018	—	`conf`	A Generalization of the Theory of Biometric System Entropy. APSIPA Kenta Takahashi, Takao Murakami
2018	C	`conf`	A Succinct Model for Re-identification of Mobility Traces Based on Small Training Data. ISITA Takao Murakami
2018	J	`jnl`	Cancelable Indexing Based on Low-rank Approximation of Correlation-invariant Random Filtering for Fast and Secure Biometric Identification. CoRR Takao Murakami, Tetsushi Ohki, Yosuke Kaga, Masakazu Fujio, Kenta Takahashi
2018	J	`jnl`	Differentially Private Obfuscation Mechanisms for Hiding Probability Distributions. CoRR Yusuke Kawamoto, Takao Murakami
2018	—	`conf`	Face/Fingerphoto Spoof Detection under Noisy Conditions by using Deep Convolutional Neural Network. BIOSIGNALS Masakazu Fujio, Yosuke Kaga, Takao Murakami, Tetsushi Ohki, Kenta Takahashi
2018	J	`jnl`	How to Handle Excessively Anonymized Datasets. J. Inf. Process. Ryo Nojima, Hidenobu Oguri, Hiroaki Kikuchi, Hiroshi Nakagawa, Koki Hamada, Takao Murakami, Yuji Yamaoka, Chiemi Watanabe
2018	J	`jnl`	Model Inversion Attacks for Online Prediction Systems: Without Knowledge of Non-Sensitive Attributes. IEICE Trans. Inf. Syst. Seira Hidano, Takao Murakami, Shuichi Katsumata, Shinsaku Kiyomoto, Goichiro Hanaoka
2018	C	`conf`	On the Anonymization of Differentially Private Location Obfuscation. ISITA Yusuke Kawamoto, Takao Murakami
2018	J	`jnl`	On the Anonymization of Differentially Private Location Obfuscation. CoRR Yusuke Kawamoto, Takao Murakami
2018	J	`jnl`	Restricted Local Differential Privacy for Distribution Estimation with High Data Utility. CoRR Takao Murakami, Yusuke Kawamoto
2018	J	`jnl`	Toward Distribution Estimation under Local Differential Privacy with Small Samples. Proc. Priv. Enhancing Technol. Takao Murakami, Hideitsu Hino, Jun Sakuma
2017	C	`conf`	A Secure and Practical Signature Scheme for Blockchain Based on Biometrics. ISPEC Yosuke Kaga, Masakazu Fujio, Ken Naganuma, Kenta Takahashi, Takao Murakami, Tetsushi Ohki, Masakatsu Nishigaki
2017	J	`jnl`	Expectation-Maximization Tensor Factorization for Practical Location Privacy Attacks. Proc. Priv. Enhancing Technol. Takao Murakami
2017	J	`jnl`	Group Sparsity Tensor Factorization for Re-Identification of Open Mobility Traces. IEEE Trans. Inf. Forensics Secur. Takao Murakami, Atsunori Kanemura, Hideitsu Hino
2017	J	`jnl`	Modality Selection Attacks and Modality Restriction in Likelihood-Ratio Based Biometric Score Fusion. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takao Murakami, Yosuke Kaga, Kenta Takahashi
2017	C	`conf`	Model Inversion Attacks for Prediction Systems: Without Knowledge of Non-Sensitive Attributes. PST Seira Hidano, Takao Murakami, Shuichi Katsumata, Shinsaku Kiyomoto, Goichiro Hanaoka
2017	J	`jnl`	Signature Schemes with a Fuzzy Private Key. IACR Cryptol. ePrint Arch. Kenta Takahashi, Takahiro Matsuda, Takao Murakami, Goichiro Hanaoka, Masakatsu Nishigaki
2016	B	`conf`	Fuzzy Signatures: Relaxing Requirements and a New Construction. ACNS Takahiro Matsuda, Kenta Takahashi, Takao Murakami, Goichiro Hanaoka
2016	J	`jnl`	Information-Theoretic Performance Evaluation of Multibiometric Fusion under Modality Selection Attacks. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Takao Murakami, Yosuke Kaga, Kenta Takahashi
2016	J	`jnl`	Localization Attacks Using Matrix and Tensor Factorization. IEEE Trans. Inf. Forensics Secur. Takao Murakami, Hajime Watanabe
2016	B	`conf`	On restricting modalities in likelihood-ratio based biometric score fusion. ICPR Takao Murakami, Yosuke Kaga, Kenta Takahashi
2016	J	`jnl`	Optimal sequential fusion for multibiometric cryptosystems. Inf. Fusion Takao Murakami, Tetsushi Ohki, Kenta Takahashi
2015	B	`conf`	A Signature Scheme with a Fuzzy Private Key. ACNS Kenta Takahashi, Takahiro Matsuda, Takao Murakami, Goichiro Hanaoka, Masakatsu Nishigaki
2015	—	`conf`	Group Sparsity Tensor Factorization for De-anonymization of Mobility Traces. TrustCom/BigDataSE/ISPA (1) Takao Murakami, Atsunori Kanemura, Hideitsu Hino
2015	—	`conf`	Information-theoretic performance evaluation of likelihood-ratio based biometric score fusion under modality selection attacks. BTAS Takao Murakami, Kenta Takahashi
2014	J	`jnl`	A General Framework and Algorithms for Score Level Indexing and Fusion in Biometric Identification. IEICE Trans. Inf. Syst. Takao Murakami, Kenta Takahashi, Kanta Matsuura
2014	J	`jnl`	A measure of information gained through biometric systems. Image Vis. Comput. Kenta Takahashi, Takao Murakami
2014	—	`conf`	Location prediction attacks using tensor factorization and optimal defenses. IEEE BigData Takao Murakami, Hajime Watanabe
2014	J	`jnl`	Toward Optimal Fusion Algorithms With Security Against Wolves and Lambs in Biometrics. IEEE Trans. Inf. Forensics Secur. Takao Murakami, Kenta Takahashi, Kanta Matsuura
2013	J	`jnl`	Probabilistic enhancement of approximate indexing in metric spaces. Inf. Syst. Takao Murakami, Kenta Takahashi, Susumu Serita, Yasuhiro Fujii
2012	—	`conf`	Towards optimal countermeasures against wolves and lambs in biometrics. BTAS Takao Murakami, Kenta Takahashi, Kanta Matsuura
2011	B	`conf`	Fast and accurate biometric identification using score level indexing and fusion. IJCB Takao Murakami, Kenta Takahashi
2011	B	`conf`	Versatile probability-based indexing for approximate similarity search. SISAP Takao Murakami, Kenta Takahashi, Susumu Serita, Yasuhiro Fujii
2009	—	`conf`	Accuracy improvement with high convenience in biometric identification using multihypothesis sequential probability ratio test. WIFS Takao Murakami, Kenta Takahashi
2005	A	`conf`	Japanese vowel recognition based on structural representation of speech. INTERSPEECH Takao Murakami, Kazutaka Maruyama, Nobuaki Minematsu, Keikichi Hirose