Takao Murakami

Publication Activity (10 Years)

Years Active: 2005-2024
Publications (10 Years): 61

Top Topics

Convolutional Neural Network

Biometric Identification

Differential Privacy

Top Venues

Proc. Priv. Enhancing Technol.

USENIX Security Symposium

IEEE Trans. Inf. Forensics Secur.

Publications

Jun Narita, Takao Murakami, Hideitsu Hino, Masakatsu Nishigaki, Tetsushi Ohki
Synthesizing differentially private location traces including co-locations. Int. J. Inf. Sec. 23 (1) (2024)
Seira Hidano, Takao Murakami
Degree-Preserving Randomized Response for Graph Neural Networks under Local Differential Privacy. Trans. Data Priv. 17 (2) (2024)
Shang Liu, Yang Cao, Takao Murakami, Jinfei Liu, Masatoshi Yoshikawa
CARGO: Crypto-Assisted Differentially Private Triangle Counting Without Trusted Servers. ICDE (2024)
Shang Liu, Yang Cao, Takao Murakami, Weiran Liu, Seng Pei Liew, Tsubasa Takahashi, Jinfei Liu, Masatoshi Yoshikawa
Federated Graph Analytics with Differential Privacy. CoRR (2024)
Reo Eriguchi, Kazumasa Shinagawa, Takao Murakami
Card-Based Cryptography Meets Differential Privacy. FUN (2024)
Nuttapong Attrapadung, Goichiro Hanaoka, Haochen M. Kotoi-Xie, Takahiro Matsuda, Takumi Moriyama, Takao Murakami, Hidenori Nakamura, Jacob C. N. Schuldt, Masaaki Tokuyama, Jing Zhang
Two-Dimensional Dynamic Fusion for Continuous Authentication. IJCB (2023)
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
Designing a Location Trace Anonymization Contest. Proc. Priv. Enhancing Technol. 2023 (1) (2023)
Shang Liu, Yang Cao, Takao Murakami, Jinfei Liu, Masatoshi Yoshikawa
CARGO: Crypto-Assisted Differentially Private Triangle Counting without Trusted Servers. CoRR (2023)
Nuttapong Attrapadung, Goichiro Hanaoka, Haochen M. Kotoi-Xie, Takahiro Matsuda, Takumi Moriyama, Takao Murakami, Hidenori Nakamura, Jacob C. N. Schuldt, Masaaki Tokuyama, Jing Zhang
Two-Dimensional Dynamic Fusion for Continuous Authentication. CoRR (2023)
Takao Murakami, Yuichi Sei
Automatic Tuning of Privacy Budgets in Input-Discriminative Local Differential Privacy. IEEE Internet Things J. 10 (18) (2023)
Shang Liu, Yang Cao, Takao Murakami, Masatoshi Yoshikawa
A Crypto-Assisted Approach for Publishing Graph Statistics with Node Local Differential Privacy. Big Data (2022)
Jacob Imola, Takao Murakami, Kamalika Chaudhuri
Differentially Private Subgraph Counting in the Shuffle Model. CoRR (2022)
Jacob Imola, Takao Murakami, Kamalika Chaudhuri
Communication-Efficient Triangle Counting under Local Differential Privacy. USENIX Security Symposium (2022)
Seira Hidano, Takao Murakami
Degree-Preserving Randomized Response for Graph Neural Networks under Local Differential Privacy. CoRR (2022)
Shang Liu, Yang Cao, Takao Murakami, Masatoshi Yoshikawa
A Crypto-Assisted Approach for Publishing Graph Statistics with Node Local Differential Privacy. CoRR (2022)
Jacob Imola, Takao Murakami, Kamalika Chaudhuri
Differentially Private Triangle and 4-Cycle Counting in the Shuffle Model. CCS (2022)
Jacob Imola, Takao Murakami, Kamalika Chaudhuri
Communication-Efficient Triangle Counting under Local Differential Privacy. CoRR (2021)
Natasha Fernandes, Yusuke Kawamoto, Takao Murakami
Locality Sensitive Hashing with Extended Differential Privacy. ESORICS (2) (2021)
Seira Hidano, Takao Murakami, Yusuke Kawamoto
TransMIA: Membership Inference Attacks Using Transfer Shadow Training. IJCNN (2021)
Takao Murakami, Kenta Takahashi
Toward Evaluating Re-identification Risks in the Local Privacy Model. Trans. Data Priv. 14 (3) (2021)
Jun Narita, Yayoi Suganuma, Masakatsu Nishigaki, Takao Murakami, Tetsushi Ohki
Synthesizing Privacy-Preserving Location Traces Including Co-locations. DPM/CBT@ESORICS (2021)
Takao Murakami, Koki Hamada, Yusuke Kawamoto, Takuma Hatano
Privacy-Preserving Multiple Tensor Factorization for Synthesizing Large-Scale Location Traces with Cluster-Specific Features. Proc. Priv. Enhancing Technol. 2021 (2) (2021)
Jacob Imola, Takao Murakami, Kamalika Chaudhuri
Locally Differentially Private Analysis of Graph Statistics. USENIX Security Symposium (2021)
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
Designing a Location Trace Anonymization Contest. CoRR (2021)
Takao Murakami, Kenta Takahashi
Toward Evaluating Re-identification Risks in the Local Privacy Model. CoRR (2020)
Natasha Fernandes, Yusuke Kawamoto, Takao Murakami
Locality Sensitive Hashing with Extended Differential Privacy. CoRR (2020)
Jacob Imola, Takao Murakami, Kamalika Chaudhuri
Locally Differentially Private Analysis of Graph Statistics. CoRR (2020)
Seira Hidano, Takao Murakami, Shuichi Katsumata, Shinsaku Kiyomoto, Goichiro Hanaoka
Exposing Private User Behaviors of Collaborative Filtering via Model Inversion Techniques. Proc. Priv. Enhancing Technol. 2020 (3) (2020)
Seira Hidano, Yusuke Kawamoto, Takao Murakami
TransMIA: Membership Inference Attacks Using Transfer Shadow Training. CoRR (2020)
Yusuke Kawamoto, Takao Murakami
. Allerton (2019)
Takao Murakami, Yusuke Kawamoto
Utility-Optimized Local Differential Privacy Mechanisms for Distribution Estimation. USENIX Security Symposium (2019)
Takao Murakami, Koki Hamada, Yusuke Kawamoto, Takuma Hatano
Privacy-Preserving Multiple Tensor Factorization for Synthesizing Large-Scale Location Traces. CoRR (2019)
Yusuke Kawamoto, Takao Murakami
Local Distribution Obfuscation via Probability Coupling. CoRR (2019)
Kenta Takahashi, Takahiro Matsuda, Takao Murakami, Goichiro Hanaoka, Masakatsu Nishigaki
Signature schemes with a fuzzy private key. Int. J. Inf. Sec. 18 (5) (2019)
Takahiro Matsuda, Kenta Takahashi, Takao Murakami, Goichiro Hanaoka
Improved Security Evaluation Techniques for Imperfect Randomness from Arbitrary Distributions. Public Key Cryptography (1) (2019)
Takao Murakami, Tetsushi Ohki, Yosuke Kaga, Masakazu Fujio, Kenta Takahashi
Cancelable indexing based on low-rank approximation of correlation-invariant random filtering for fast and secure biometric identification. Pattern Recognit. Lett. 126 (2019)
Takahiro Matsuda, Kenta Takahashi, Takao Murakami, Goichiro Hanaoka
Improved Security Evaluation Techniques for Imperfect Randomness from Arbitrary Distributions. IACR Cryptol. ePrint Arch. 2019 (2019)
Takao Murakami, Ryo Fujita, Tetsushi Ohki, Yosuke Kaga, Masakazu Fujio, Kenta Takahashi
Cancelable Permutation-Based Indexing for Secure and Efficient Biometric Identification. IEEE Access 7 (2019)
Yusuke Kawamoto, Takao Murakami
Local Obfuscation Mechanisms for Hiding Probability Distributions. ESORICS (1) (2019)
Takao Murakami
A Succinct Model for Re-identification of Mobility Traces Based on Small Training Data. ISITA (2018)
Ryo Nojima, Hidenobu Oguri, Hiroaki Kikuchi, Hiroshi Nakagawa, Koki Hamada, Takao Murakami, Yuji Yamaoka, Chiemi Watanabe
How to Handle Excessively Anonymized Datasets. J. Inf. Process. 26 (2018)
Yusuke Kawamoto, Takao Murakami
On the Anonymization of Differentially Private Location Obfuscation. ISITA (2018)
Takao Murakami, Hideitsu Hino, Jun Sakuma
Toward Distribution Estimation under Local Differential Privacy with Small Samples. Proc. Priv. Enhancing Technol. 2018 (3) (2018)
Kenta Takahashi, Takao Murakami
A Generalization of the Theory of Biometric System Entropy. APSIPA (2018)
Takao Murakami, Tetsushi Ohki, Yosuke Kaga, Masakazu Fujio, Kenta Takahashi
Cancelable Indexing Based on Low-rank Approximation of Correlation-invariant Random Filtering for Fast and Secure Biometric Identification. CoRR (2018)
Yusuke Kawamoto, Takao Murakami
Differentially Private Obfuscation Mechanisms for Hiding Probability Distributions. CoRR (2018)
Masakazu Fujio, Yosuke Kaga, Takao Murakami, Tetsushi Ohki, Kenta Takahashi
Face/Fingerphoto Spoof Detection under Noisy Conditions by using Deep Convolutional Neural Network. BIOSIGNALS (2018)
Takao Murakami, Yusuke Kawamoto
Restricted Local Differential Privacy for Distribution Estimation with High Data Utility. CoRR (2018)
Yusuke Kawamoto, Takao Murakami
On the Anonymization of Differentially Private Location Obfuscation. CoRR (2018)
Seira Hidano, Takao Murakami, Shuichi Katsumata, Shinsaku Kiyomoto, Goichiro Hanaoka
Model Inversion Attacks for Online Prediction Systems: Without Knowledge of Non-Sensitive Attributes. IEICE Trans. Inf. Syst. (11) (2018)
Takao Murakami, Atsunori Kanemura, Hideitsu Hino
Group Sparsity Tensor Factorization for Re-Identification of Open Mobility Traces. IEEE Trans. Inf. Forensics Secur. 12 (3) (2017)
Takao Murakami, Yosuke Kaga, Kenta Takahashi
Modality Selection Attacks and Modality Restriction in Likelihood-Ratio Based Biometric Score Fusion. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (12) (2017)
Kenta Takahashi, Takahiro Matsuda, Takao Murakami, Goichiro Hanaoka, Masakatsu Nishigaki
Signature Schemes with a Fuzzy Private Key. IACR Cryptol. ePrint Arch. 2017 (2017)
Yosuke Kaga, Masakazu Fujio, Ken Naganuma, Kenta Takahashi, Takao Murakami, Tetsushi Ohki, Masakatsu Nishigaki
A Secure and Practical Signature Scheme for Blockchain Based on Biometrics. ISPEC (2017)
Seira Hidano, Takao Murakami, Shuichi Katsumata, Shinsaku Kiyomoto, Goichiro Hanaoka
Model Inversion Attacks for Prediction Systems: Without Knowledge of Non-Sensitive Attributes. PST (2017)
Takao Murakami
Expectation-Maximization Tensor Factorization for Practical Location Privacy Attacks. Proc. Priv. Enhancing Technol. 2017 (4) (2017)
Takao Murakami, Hajime Watanabe
Localization Attacks Using Matrix and Tensor Factorization. IEEE Trans. Inf. Forensics Secur. 11 (8) (2016)
Takahiro Matsuda, Kenta Takahashi, Takao Murakami, Goichiro Hanaoka
Fuzzy Signatures: Relaxing Requirements and a New Construction. ACNS (2016)
Takao Murakami, Yosuke Kaga, Kenta Takahashi
On restricting modalities in likelihood-ratio based biometric score fusion. ICPR (2016)
Takao Murakami, Yosuke Kaga, Kenta Takahashi
Information-Theoretic Performance Evaluation of Multibiometric Fusion under Modality Selection Attacks. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (5) (2016)
Takao Murakami, Tetsushi Ohki, Kenta Takahashi
Optimal sequential fusion for multibiometric cryptosystems. Inf. Fusion 32 (2016)
Takao Murakami, Atsunori Kanemura, Hideitsu Hino
Group Sparsity Tensor Factorization for De-anonymization of Mobility Traces. TrustCom/BigDataSE/ISPA (1) (2015)
Kenta Takahashi, Takahiro Matsuda, Takao Murakami, Goichiro Hanaoka, Masakatsu Nishigaki
A Signature Scheme with a Fuzzy Private Key. ACNS (2015)
Takao Murakami, Kenta Takahashi
Information-theoretic performance evaluation of likelihood-ratio based biometric score fusion under modality selection attacks. BTAS (2015)
Takao Murakami, Kenta Takahashi, Kanta Matsuura
A General Framework and Algorithms for Score Level Indexing and Fusion in Biometric Identification. IEICE Trans. Inf. Syst. (3) (2014)
Kenta Takahashi, Takao Murakami
A measure of information gained through biometric systems. Image Vis. Comput. 32 (12) (2014)
Takao Murakami, Hajime Watanabe
Location prediction attacks using tensor factorization and optimal defenses. IEEE BigData (2014)
Takao Murakami, Kenta Takahashi, Kanta Matsuura
Toward Optimal Fusion Algorithms With Security Against Wolves and Lambs in Biometrics. IEEE Trans. Inf. Forensics Secur. 9 (2) (2014)
Takao Murakami, Kenta Takahashi, Susumu Serita, Yasuhiro Fujii
Probabilistic enhancement of approximate indexing in metric spaces. Inf. Syst. 38 (7) (2013)
Takao Murakami, Kenta Takahashi, Kanta Matsuura
Towards optimal countermeasures against wolves and lambs in biometrics. BTAS (2012)
Takao Murakami, Kenta Takahashi
Fast and accurate biometric identification using score level indexing and fusion. IJCB (2011)
Takao Murakami, Kenta Takahashi, Susumu Serita, Yasuhiro Fujii
Versatile probability-based indexing for approximate similarity search. SISAP (2011)
Takao Murakami, Kenta Takahashi
Accuracy improvement with high convenience in biometric identification using multihypothesis sequential probability ratio test. WIFS (2009)
Takao Murakami, Kazutaka Maruyama, Nobuaki Minematsu, Keikichi Hirose
Japanese vowel recognition based on structural representation of speech. INTERSPEECH (2005)