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14th IIAI International Congress on Advanced Applied Informatics, IIAI-AAI 2023

作者： Murakami, Tomohiro Nakao, Nozomi Miyake, Hikaru Murata, Hayate Amano, Itsuki Kojima, Taisei Ando, Keisuke Ito, Nobuhiro Aichi Institute of Technology Graduate School of Business Administration and Computer Science Toyota Japan Aichi Institute of Technology Department of Information Science Toyota Japan Aichi Institute of Technology Faculty of Information Science Toyota Japan

ISBN: (纸本)9798350324228

Recently, research on AIWolf, which is artificial intelligence that plays the Werewolf game, has attracted much attention. Werewolves in the Werewolf game should cooperate using 'whispers;' which are conversations among werewolves only. However, whispers have not been used effectively in the AIWolf Competition and little research has been conducted on this topic. Therefore, the purpose of this study is to clarify the effectiveness of strategies that use whispers in AIWolf. A wide variety of strategies use whispers, but we focus on unifying attack targets, which was shown to improve the winning rate in previous studies. In the strategy of unifying attack targets, the strategy of the guiding agents is important. Therefore, we used 13 AIWolf Competition finalists with a wide variety of strategies and added statements of whom to attack in whispers to each finalist as a guide for whom to attack. Because there are three werewolf competitions in the AIWolf Competition setting, we created two agents to be attuned to the attack target of one of the guiding agents. In an experiment, we used these agents in the same setting as in the AIWolf Competition, and analyzed the differences between when the attack targets were unified and when they were not. The results showed that when the werewolves were a combination of two attuning agents and one guiding agent, the werewolves' win rate increased by an average of 2.3 percentage points. We also found that attuning to the agent with a high winning rate or high success rate in attacks improved the winning rate. These results indicate that attuning only the attack targets of agents with high winning rates and high success rates in attacks led to higher winning rates. © 2023 IEEE.

关键词： Artificial intelligence

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Towards Robust Temporal Activity Localization Learning with Noisy Labels 30

Towards Robust Temporal Activity Localization Learning with ...

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Joint 30th International Conference on Computational Linguistics and 14th International Conference on Language Resources and Evaluation, LREC-COLING 2024

作者： Liu, Daizong Qu, Xiaoye Fang, Xiang Dong, Jianfeng Zhou, Pan Nan, Guoshun Tang, Keke Fang, Wanlong Cheng, Yu Wangxuan Institute of Computer Technology Peking University China School of Cyber Science and Engineering Huazhong University of Science of Technology China Interdisciplinary Graduate Programme Nanyang Technological University Singapore College of Computer Science and Technology Zhejiang Gongshang University China School of Cyberspace Security Beijing University of Posts and Telecommunications China Cyberspace Institute of Advanced Technology Guangzhou University China Department of Computer Science and Engineering The Chinese University of Hong Kong Hong Kong

ISBN: (纸本)9782493814104

This paper addresses the task of temporal activity localization (TAL). Although recent works have made significant progress in TAL research, almost all of them implicitly assume that the dense frame-level correspondences in each video-query pair are correctly annotated. However, in reality, such an assumption is extremely expensive and even impossible to satisfy due to subjective labeling. To alleviate this issue, in this paper, we explore a new TAL setting termed Noisy Temporal activity localization (NTAL), where a TAL model should be robust to the mixed training data with noisy moment boundaries. Inspired by the memorization effect of neural networks, we propose a novel method called Co-Teaching Regularizer (CTR) for NTAL. Specifically, we first learn a Gaussian Mixture Model to divide the mixed training data into preliminary clean and noisy subsets. Subsequently, we refine the labels of the two subsets by an adaptive prediction function so that their true positive and false positive samples could be identified. To avoid single model being prone to its mistakes learned by the mixed data, we adopt a co-teaching paradigm, which utilizes two models sharing the same framework to teach each other for robust learning. A curriculum strategy is further introduced to gradually learn the moment confidence from easy to hard. Experiments on three datasets demonstrate that our CTR is significantly more robust to the noisy training data compared to the existing methods. © 2024 ELRA Language Resource Association: CC BY-NC 4.0.

关键词： Gaussian distribution

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Estimating Person Location in Bathroom with Spatial Ultrasound and Variational autoencoder

Estimating Person Location in Bathroom with Spatial Ultrasou...

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2023 IEEE International Ultrasonics Symposium, IUS 2023

作者： Sato, Shun Yasuda, Yuto Ohara, Ryotaro Hamabe, Riku Genda, Takayuki Imanaka, Shoya Izumi, Shintaro Kawaguchi, Hiroshi Kobe University Graduate School of System Informatics Kobe Japan Kobe University Department of Computer Science and Systems Engineering Kobe Japan Kobe University Graduate School of Science Technology and Innovation Kobe Japan

ISBN: (纸本)9798350346459

In bathrooms, a fall can lead to severe injuries or even drowning. While taking preventive measures against such accidents is crucial, it's equally important to swiftly detect and request rescue when they occur. In such scenarios, knowing the exact location of the person in the bathroom becomes critical. However, concerns related to privacy and costs make the use of cameras and lidar impractical. To address these issues, we propose a method for estimating the 3D location of a person within the bathroom using ultrasound correlation values as input for a deep neural network. To validate our approach, we conduct experiments using two sensors in this study. The results are promising, as we achieved a mean square error of just 10.48 cm. © 2023 IEEE.

关键词： Location

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Literature Review: Analysis of Essential Metadata Attributes of Digital Goods for Transaction in The Virtual World 9

Literature Review: Analysis of Essential Metadata Attributes...

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9th International Conference on Information Management and technology, ICIMTech 2024

作者： Martha, Gede Indra Raditya Prabowo, Harjanto Gaol, Ford Lumban Wiputra, Richard BINUS Graduate Program - Doctor of Computer Science Bina Nusantara University Computer Science Department Jakarta11480 Indonesia BINUS Business School Undergraduate Program Bina Nusantara University Management Department Jakarta11480 Indonesia School of Information Systems Bina Nusantara University Information Systems Department Jakarta11480 Indonesia

ISBN: (纸本)9798350390025

In online-based virtual worlds such as Metaverse, Online Games, and other online digital spaces, the virtual/digital goods (digital items / digital assets) are fundamental things that must be available to be able to do business & create an economy in the virtual world through monetization & transactions from these digital goods. This research focuses on summarizing and exploring the attributes used in digital goods in the virtual world by extracting attributes in digital goods from other related studies using the Systematic Literature Review methodology & PRISMA Framework comprehensively so that it can be a reference for developers in designing the properties and functions of digital goods in the virtual world that are being developed, which in this case will be in the form of an NFT in the future. Based on research that has been carried out, 3 essential metadata attributes have the most influence on transactions, number 1 Visual Design / Aesthetic (Representative), number 2 Effect (Utilities), and number 3 Statistics / Performance (Utilities) which must be considered in developing/making digital goods in the form of NFTs in the virtual world so that the value of digital goods can attract users to buy or transact them in the virtual world. © 2024 IEEE.

关键词： Virtual environments

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TESTING FACILITY LOCATION WITH CONSTRAINED QUEUE TIME PROBLEM: A CASE STUDY IN FLORIDA, USA

TESTING FACILITY LOCATION WITH CONSTRAINED QUEUE TIME PROBLE...

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2024 Winter Simulation Conference, WSC 2024

作者： Monteiro, Almir Antonio Schneider, Rafael de Almeida Guimarães, Vanessa González, Pedro Henrique System Engineering and Computer Science Program Federal University of Rio de Janeiro Brazil COPPEAD Graduate School of Business Federal University of Rio de Janeiro Brazil

ISBN: (纸本)9798331534202

This study addresses the Testing Facility Location with Constrained Queue Time Problem. This optimization problem focuses on determining the best places to deploy testing sites and their available testers for infectious diseases, while constraining the maximum time in the queue with a given probability. An integer programming model is introduced and applied to the three biggest counties, in terms of population, of Florida, United States. Moreover, the Monte Carlo method is used to evaluate the model’s output, aiming to check if the queueing time constraint is being satisfied. Through the experiments, a testing facility deployment plan can be determined for each county and further validated by the simulation. The results show that the solutions returned by the model behaved successfully when submitted to the Monte Carlo method, not exceeding the time in the queue in more than the predefined probability. © 2024 IEEE.

关键词： Monte Carlo methods

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A Continuous Authentication Protocol Without Trust Authority for Zero Trust Architecture

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China Communications 2022年第8期19卷 198-213页

作者： Lei Meng Daochao Huang Jiahang An Xianwei Zhou Fuhong Lin School of Computer and Communication Engineering University of Science and Technology BeijingBeijing 100083China National Computer Network Emergency Response Technical Team/Coordination Center of China(CNCERT/CC) Beijing 100029China Shunde Graduate School of University of Science and Technology Beijing Guangdong528399China

Zero-trust security is a novel concept to cope with intricate access,which can not be handled by the conventional perimeter-based architecture *** device-to-device continuous authentication protocol is one of the most crucial cornerstones,especially in the IoT *** the zero-trust architecture,trust does not rely on any position,person or ***,to the best of our knowledge,almost all existing device-to-device continuous authentication relies on a trust authority or a node to generate secret keys or secret *** is betrayed by the principle of zero-trust *** this paper,we employ the blockchain to eliminate the trusted *** node is chosen to produce the public parameter and secret keys for two entities through the practical Byzantine fault tolerance consensus ***,the devices are categorized into three folds:trusted device,suspected device and untrusted *** the first two can participate in authentication,and they have different lengths of security parameters and intervals to reach a better balance between security and *** we prove the security of the initial authentication part in the eCK model and give an informal analysis of the continuous authentication ***,we implement the proposed protocol on simulated *** result illustrates that our scheme is highly efficient,and the continuous authentication only costs around 0.1ms.

关键词： continuous authentication zero-trust architecture device-to-device blockchain IoT

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Layer-Wise External Attention by Well-Localized Attention Map for Efficient Deep Anomaly Detection

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SN computer science 2024年第5期5卷 592页

作者： Nakanishi, Keiichi Shiroma, Ryo Hayakawa, Tokihisa Katafuchi, Ryoya Tokunaga, Terumasa Graduate School of Computer Science and Systems Engineering Kyushu Institute of Technology 680-4 Kawazu Fukuoka-ken Iizuka-shi 820-8502 Japan Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology 680-4 Kawazu Fukuoka-ken Iizuka-shi 820-8502 Japan

The external attention mechanism offers a promising approach to enhance image anomaly detection (Hayakawa et al., in: IMPROVE, pp. 100-–110, 2023). Nevertheless, the effectiveness of this method is contingent upon the judicious selection of an intermediate layer with external attention. In this study, we performed a comprehensive series of experiments to clarify the mechanisms through which external attention improves detection performance. We assessed the performance of the LEA-Net (Hayakawa et al., in: IMPROVE, pp. 100–110, 2023), which implements layer-wise external attention, using MVTec AD and Plant Village datasets. The detection performances of the LEA-Net were compared with that of the baseline model under different anomaly maps generated by three unsupervised approaches. In addition, we investigated the relationship between the detection performance of LEA-Net and the selection of an attention point, which means an intermediate layer where external attention is applied. The findings reveal that the synergy between the dataset and the generated anomaly map influenced the effectiveness of the LEA-Net. For poorly localized anomaly maps, the selection of the attention point becomes a pivotal factor in determining detection efficiency. At shallow attention points, a well-localized attention map successfully notably improves the detection performance. For deeper attention points, the overall intensity of the attention map is essential;this intensity can be substantially amplified by layer-wise external attention, even for a low-intensity anomaly map. Overall, the results suggest that for layer-wise external attention, the positional attributes of anomalies hold greater significance than the overall intensity or visual appearance of the anomaly map. © The Author(s) 2024.

关键词： Anomaly detection Deep learning MVTec AD Plant science Self-attention Visual attention mechanism Visual inspection AI

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Evaluating Electric Guitar Strumming Form as Musically Correct Rhythm and Sharpness Using Wrist-Wom Inertial Motion-Tracking Device

Evaluating Electric Guitar Strumming Form as Musically Corre...

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2022 IEEE International Conference on Consumer Electronics, ICCE 2022

作者： Kamo, Fumiyoshi Matsushita, Soichiro Graduate School of Computer Science Tokyo University of Technology Hachioji Japan

ISBN: (纸本)9781665441544

A wrist-worn inertial motion-tracking device using a commercially available sensor chip has been investigated for a motion evaluation on a chord strumming technique of electric guitar. Several motion parameters such as elbow-swinging angle, wrist-twisting angle, and angular jerk on the wrist-twisting axis were examined for the strumming diagnosis. Three professional guitarists and amateur players having a wide range of playing experience participated in the chord strumming evaluation experiments. As a result, it was found that musically important parameters including playing rhythm deviation and strumming sharpness were able to be estimated without using sound recorders or cameras. A newly developed evaluation algorithm for the strumming sharpness may clearly distinguish the professional and amateur guitarists. In addition, application software for PC enabled the guitar players to compare their performances with those of professional guitarists as well as of themselves in the past. A guitar strumming task finder based on the elbow-swinging angle signal enabled the user to locate a specific timing for evaluation. An experimental guitar lesson class with the easy-to-use motion analysis system showed that both the task annotation and the performance evaluation can be performed without introducing significant cost in terms of time and environmental care. © 2022 IEEE.

关键词： Application programs

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Experimental study on open-end correction of a Helmholtz resonator narrow slit neck

Noise Control Engineering Journal

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Noise Control Engineering Journal 2022年第2期70卷 128-135页

作者： Sakamoto, Shuichi Akiba, Yuki Iizuka, Ryo Watanabe, Shunsuke Kominami, Ryota Shintani, Tetsushi Mechanical Engineering Program Faculty of Engineering Niigata University Niigata Japan Graduate School of Science and Technology Niigata University Niigata Japan

In general, the acoustic effective length of the open end of an air column is longer than its geometric length. Here, the effective increment of the geometric length of an air column is called the open-end correction length, which is an acoustically crucial issue. The purpose of this study is to experimentally clarify the open-end correction length for a slit shape with a narrow clearance. For this reason, the sound absorption coefficient was measured using a sample in which the neck of the Helmholtz resonator was shaped as a slit with a narrow clearance. Next, the open-end correction length (i.e., mass end correction length and resistive end correction length) was calculated backward by comparing the experimental and theoretical sound absorption curves. The resistive end correction increased as the slit width became narrower within the range of 0.5 mm or less for both the center slit and the slit near the wall, indicating a significant discrepancy between the theoretical equation and the estimated value. For the mass end correction, in the case the center slit, the estimated value is close to the theoretical value of in the slit width range from 0.3 mm to 1.0 mm. The results of this study may be useful in eliminating discrepancies in correction values for open-end correction in slits with narrow clearance. © 2022 Institute of Noise Control Engineering.

关键词： Acoustic wave absorption

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Effectiveness Verification of the Dynamic Volt-VAR Control to Reduce SVC Capacity 4

Effectiveness Verification of the Dynamic Volt-VAR Control t...

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4th International Conference on High Voltage Engineering and Power Systems, ICHVEPS 2023

作者： Maeda, Haruka Sitompul, Sandro Fujita, Goro Shibaura Institute of Technology Graduate School of Engineering and Science Department of Electrical Engineering and Computer Science Tokyo Japan Shibaura Institute of Technology Department of Electrical Engineering Tokyo Japan

ISBN: (纸本)9798350318678

The use of high-penetration solar photovoltaics (PV) to transmission networks is complicated by voltage rise. Infractions of voltage occur when voltage levels surpass the permitted limits. Several solutions have been suggested to avoid voltage breaches, including volt-VAR control on inverters. In this research, the impact of utilizing dynamic volt-VAR control as opposed to static volt-VAR control in a high-penetration photovoltaic (PV) system is compared to the impact of applying static VAR compensator (SVC). With dynamic volt-VAR control, which takes into account the inverter's available reactive power capacity, it is possible to adjust the reactive power contribution of the PV inverter. The quantity of available capacity will affect the force of the control, as expressed by the droop gain. The transmission system's controls are evaluated for one year to determine the number of uncompensated voltage occurrences. The number of violations that the control cannot compensate for affects how much reactive power the SVC must provide. © 2023 IEEE.

关键词： Reactive power

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