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Bayesian optimization with experimental failure for high-throughput materials growth

npj Computational Materials 2022年第1期8卷 1746-1754页

作者： Yuki K.Wakabayashi Takuma Otsuka Yoshiharu Krockenberger Hiroshi Sawada Yoshitaka Taniyasu Hideki Yamamoto ntt Basic Research laboratories NTT CorporationAtsugiKanagawa243-0198Japan ntt Communication Science laboratories NTT CorporationSoraku-gunKyoto619-0237Japan

A crucial problem in achieving innovative high-throughput materials growth with machine learning,such as Bayesian optimization(BO),and automation techniques has been a lack of an appropriate way to handle missing data due to experimental ***,we propose a BO algorithm that complements the missing data in optimizing materials growth *** proposed method provides a flexible optimization algorithm that searches a wide multi-dimensional parameter *** demonstrate the effectiveness of the method with simulated data as well as in its implementation for actual materials growth,namely machine-learning-assisted molecular beam epitaxy(ML-MBE)of SrRuO_(3),which is widely used as a metallic electrode in oxide *** the exploitation and exploration in a wide three-dimensional parameter space,while complementing the missing data,we attained tensile-strained SrRuO3 film with a high residual resistivity ratio of 80.1,the highest among tensile-strained SrRuO3 films ever reported,in only 35 MBE growth runs.

关键词： optimization strained resistivity

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Motion tracking method for the CAVETM system

Motion tracking method for the CAVETM system

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2000年第16届世界计算机大会

作者： Kenichi Kida Masayuki Ihara Shinichi Shiwa Satoshi Ishibashi ntt cyber space laboratories

＜正＞The long-term goals of our research are the creation of a technique for tracking human motion in the CAVE? system and the applications that use this *** paper describes a new way of optically measuring three-dimensional positions in real-time for the purpose of human motion tracking in the CAVE? *** problems with the optical method,marker tracking in dark places, occlusion,and mistaken marker identification as a result of two markers overlapping in the camera’s field of view,are *** solutions to these problems use the properties of the human body,and we verify the effectiveness of this method.

关键词： CAVETM virtual space human motion tracking three-dimensional positions measurement

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User Adaptation in MT-mediated Communication

User Adaptation in MT-mediated Communication

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第一届自然语言处理联合学术会议

作者： Kentaro Ogura Yoshihiko Hayashi Saeko Nomura Toru Ishida ntt cyber space laboratories Yokosuka-shi Kanagawa{ogura.kentaro hayashi.yoshihiko} ntt cyber space laboratories Yokosuka-shi Kanagawa{ogura.kentaro hayashi.yoshihiko} Department of Social Informatics Kyoto University Kyoto Department of Social Informatics Kyoto University Kyoto

＜正＞This paper analyzes the impact of user adaptation in MT-mediated communication. It clarifies how the user adapts to machine translation and how effective the adaptation is in terms of communication when the purpose of communication is clear. The most common alterations and their effectiveness strongly depend on the translation language pairs. In the case of Japanese-to-English translation, we observed two main alterations: replacing words or phrases to offset the difference in concepts between Japanese and English and supplementing subjects to offset the difference in modes of expression between Japanese and English. Since Korean and Japanese are similar languages, Korean users exhibited similar adaptation tendencies. The adaptation performed by Japanese users when referring to the English translation was very effective in improving the quality of the English translations. However, it was not so effective for Chinese and even less effective for Korean translations.

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Research on Metaverse Security and Forensics

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Computers, Materials & Continua 2023年第10期77卷 799-825页

作者： Guangjun Liang Jianfang Xin Qun Wang Xueli Ni Xiangmin Guo Pu Chen Department of Computer Information and cyber Security Jiangsu Police InstituteNanjingChina Engineering Research Center of Electronic Data Forensics Analysis NanjingChina Key Laboratory of Digital Forensics Department of Public Security of Jiangsu ProvinceNanjingChina School of Intelligent Engineering Nanjing Institute of Railway TechnologyNanjingChina

As a subversive concept,the metaverse has recently attracted widespread attention around the world and has set off a wave of enthusiasm in academic,industrial,and investment ***,while the metaverse brings unprecedented opportunities for transformation to human society,it also contains related *** is a digital living space with information infrastructure,interoperability system,content production system,and value settlement system as the underlying structure in which the inner core is to connect real residents through applications and *** social incentives and governance rules,the metaverse reflects the digital migration of human *** article will conduct an in-depth analysis of the metaverse from the perspective of electronic data ***,from the perspective of Internet development,the background and development process of the metaverse is *** systematically elaborating on the concept and connotation of the metaverse,this paper summarizes the different views of current practitioners,experts,and scholars on the ***,from the perspective of metaverse security,the social risk and crime risks of the metaverse are *** the importance of metaverse forensics is ***,from the perspective of blockchain,smart wearable devices,and virtual reality devices,the objects and characteristics of metaverse forensics have been studied in *** smart wearable devices as an example,this paper gives the relevant experimental process of smart bracelet ***,many challenges faced by metaverse forensics are summarized by us which provide readers with some exploratory guidance.

关键词： Metaverse forensics blockchain smart wear virtual reality

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