User profiles for Takao Murakami

Takao Murakami

The Institute of Statistical Mathematics (ISM)
Verified email at ism.ac.jp
Cited by 1337

Defect analysis and fatigue design basis for Ni-based superalloy 718 manufactured by selective laser melting

…, T Murakami, R Mihara, M Okada, Y Murakami - International Journal of …, 2018 - Elsevier
It is well known that high strength metallic materials with Vickers hardness HV > 400 are very
sensitive to small defects. This paper discusses fatigue properties of a Ni-based Superalloy …

{Utility-Optimized} local differential privacy mechanisms for distribution estimation

T Murakami, Y Kawamoto - 28th USENIX Security Symposium (USENIX …, 2019 - usenix.org
LDP (Local Differential Privacy) has been widely studied to estimate statistics of personal
data (eg, distribution underlying the data) while protecting users' privacy. Although LDP does …

Locally differentially private analysis of graph statistics

J Imola, T Murakami, K Chaudhuri - 30th USENIX security symposium …, 2021 - usenix.org
Differentially private analysis of graphs is widely used for releasing statistics from sensitive
graphs while still preserving user privacy. Most existing algorithms however are in a …

Model inversion attacks for prediction systems: Without knowledge of non-sensitive attributes

S Hidano, T Murakami, S Katsumata… - 2017 15th Annual …, 2017 - ieeexplore.ieee.org
While online services based on machine learning (ML) have been attracting considerable
attention in both academic and business, privacy issues are becoming a threat that cannot be …

{Communication-Efficient} triangle counting under local differential privacy

J Imola, T Murakami, K Chaudhuri - 31st USENIX security symposium …, 2022 - usenix.org
Triangle counting in networks under LDP (Local Differential Privacy) is a fundamental task
for analyzing connection patterns or calculating a clustering coefficient while strongly …

Chemical assay of ptaquiloside, the carcinogen of Pteridium aquilinum, and the distribution of related compounds in the Pteridaceae

…, T Nagao, M Matoba, K Koyama, S Natori, T Murakami… - Phytochemistry, 1989 - Elsevier
A chemical assay of ptaquiloside, the major carcinogen of Pteridium aquilinum, based on
two-dimensional TLC-densitometry, was devised. The contents of ptaquiloside and related …

Signature schemes with a fuzzy private key

K Takahashi, T Matsuda, T Murakami… - International Journal of …, 2019 - Springer
In this paper, we introduce a new concept of digital signature that we call fuzzy signature,
which is a signature scheme that uses a noisy string such as biometric data as a private key, …

Differentially private triangle and 4-cycle counting in the shuffle model

J Imola, T Murakami, K Chaudhuri - Proceedings of the 2022 ACM …, 2022 - dl.acm.org
Subgraph counting is fundamental for analyzing connection patterns or clustering tendencies
in graph data. Recent studies have applied LDP (Local Differential Privacy) to subgraph …

Chemical and chemotaxonomical studies of ferns. LXXXI. Characteristic lignans of Blechnaceous ferns

H Wada, T Kido, N Tanaka, T Murakami… - Chemical and …, 1992 - jstage.jst.go.jp
Four lignans, blechnic acid (1), 7-epiblechnic acid (3), 8-epiblechnic acid (6) and brainic acid
(2), were isolated from six Blechnaceous ferns, Blechnum orientale, Struthiopteris amabiIis, …

Novel autotrophic nitrogen removal system using gel entrapment technology

…, H Itokawa, Y Kimura, K Noto, T Murakami - Bioresource technology, 2011 - Elsevier
A pilot plant involving a nitritation–anammox process was operated for treating digester
supernatant. In the preceding nitritation process, ammonium-oxidizing bacteria were …