Takao MURAKAMI

Model Inversion Attacks for Online Prediction Systems: Without Knowledge of Non-Sensitive Attributes
Seira HIDANO Takao MURAKAMI Shuichi KATSUMATA Shinsaku KIYOMOTO Goichiro HANAOKA 
Publication:   
Publication Date: 2018/11/01
Vol. E101-D  No. 11  pp. 2665-2676
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: Forensics and Risk Analysis
Keyword: 
black box, model inversion, data poisoning, online ML systems, 
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Modality Selection Attacks and Modality Restriction in Likelihood-Ratio Based Biometric Score Fusion
Takao MURAKAMI Yosuke KAGA Kenta TAKAHASHI 
Publication:   
Publication Date: 2017/12/01
Vol. E100-A  No. 12  pp. 3023-3037
Type of Manuscript:  PAPER
Category: Biometrics
Keyword: 
multibiometric fusion, likelihood ratio, modality selection attack, KL divergence, goat, 
 Summary | Full Text:PDF
Information-Theoretic Performance Evaluation of Multibiometric Fusion under Modality Selection Attacks
Takao MURAKAMI Yosuke KAGA Kenta TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/05/01
Vol. E99-A  No. 5  pp. 929-942
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
multibiometric authentication, log-likelihood ratio, modality selection attacks, password entropy, KL divergence, 
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A General Framework and Algorithms for Score Level Indexing and Fusion in Biometric Identification
Takao MURAKAMI Kenta TAKAHASHI Kanta MATSUURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/03/01
Vol. E97-D  No. 3  pp. 510-523
Type of Manuscript:  PAPER
Category: Information Network
Keyword: 
biometric identification, score level fusion, missing score, metric space indexing, pseudo-score, multi-biometric search, 
 Summary | Full Text:PDF