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- Kenta Takahashi, Takao Murakami, Kenta Takahashi, Takao Murakami
- ICPR 2010
- 2010
We propose a metric of information gained through biometric matching systems. Firstly, we discuss how the information about the identity of a person is derived from biometric samples through a… (More)
- Toshikazu Hashimoto, Kensuke Onda, Yumiko Nakamura, Kuninao Tada, Akiko Miya, Takao Murakami
- Water research
- 2007
The presence of natural estrogens, 17beta-estradiol (E2), estrone (E1) and estriol (E3), as well as estrogenic activity in wastewater influents and secondary effluents were investigated in 20… (More)
- Takao Murakami, Kenta Takahashi
- 2009 First IEEE International Workshop on…
- 2009
Biometric identification has lately attracted attention because of its high convenience; it does not require a user to enter a user ID. The identification accuracy, however, degrades as the number of… (More)
- Takao Murakami, Kenta Takahashi, Kanta Matsuura
- 2012 IEEE Fifth International Conference on…
- 2012
Claimants and enrollees who have high similarity scores against many others are referred to as wolves and lambs, respectively. These animals can cause false accepts against many others and compromise… (More)
- Takao Murakami, Hajime Watanabe
- 2014 IEEE International Conference on Big Data…
- 2014
Recent studies have proposed various attacks against location privacy using a Markov Chain transition matrix trained for each user. However, when a user has disclosed only a small amount of location… (More)
In this paper, we introduce a new concept that we call fuzzy signature, which is a signature scheme that uses a noisy string such as biometric data as a private key, but does not require auxiliary… (More)
- Toshikazu Hashimoto, Takao Murakami
- Water research
- 2009
The removal and degradation characteristics of natural and synthetic estrogens by activated sludge were investigated by a series of batch experiments using the activated sludge samples of four actual… (More)
- Kenta Takahashi, Takao Murakami
- Image Vision Comput.
- 2014
We propose a measure of information gained through biometric matching systems. Firstly, we discuss how the information about the identity of a person is derived from biometric samples through a… (More)
- Takao Murakami, Hajime Watanabe
- IEEE Transactions on Information Forensics and…
- 2016
It is known that various types of location privacy attacks can be carried out using a personalized transition matrix that is learned for each target user, or a population transition matrix that is… (More)