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arXiv 2021年

作者： Fedrecheski, Geovane Costa, Laisa C.P. Afzal, Samira Rabaey, Jan M. Lopes, Roseli D. Zuffo, Marcelo K. Interdisciplinary Center on Interactive Technologies Polytechnic School University of Sao Paulo Brazil Berkeley Wireless Research Center Electrical Engineering and Computer Science Department University California Berkeley United States

We present a low-overhead mechanism for self-sovereign identification and communication of IoT agents in constrained networks. Our main contribution is to enable native use of Decentralized Identifiers (DIDs) and DID-based secure communication on constrained networks, whereas previous works either did not consider the issue or relied on proxy-based architectures. We propose a new extension to DIDs along with a more concise serialization method for DID metadata. Moreover, in order to reduce the security overhead over transmitted messages, we adopted a binary message envelope. We implemented these proposals within the context of Swarm Computing, an approach for decentralized IoT. Results showed that our proposal reduces the size of identity metadata in almost four times and security overhead up to five times. We observed that both techniques are required to enable operation on constrained networks. © 2021, CC BY-NC-SA.

关键词： Metadata

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On 2-Site Voronoi Diagrams under Arithmetic Combinations of Point-to-Point Distances

On 2-Site Voronoi Diagrams under Arithmetic Combinations of ...

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International Symposium on Voronoi Diagrams in science and Engineering (ISVD)

作者： Kira Vyatkina Gill Barequet Department of Mathematics and Mechanics Saint Petersburg State University Saint Petersburg Russia Center of Graphics and Geometric Computing Department of Computer Science Technion-Israel Institute of Technology Haifa Israel

ISBN: (纸本)9781424476060;9780769541129

We consider a generalization of Voronoi diagrams, recently introduced by Barequet et al., in which the distance is measured from a pair of sites to a point. An easy way to define such distance was proposed together with the concept: it can be the sum-of, the product-of, or (the absolute value of) the difference-between Euclidean distances from either site to the respective point. We explore further the last definition, and analyze the complexity of the nearest- and the furthest-neighbor 2-site Voronoi diagrams for points in the plane with Manhattan or Chebyshev underlying metrics, providing extensions to general Minkowsky metrics and, for the nearest-neighbor case, to higher dimensions. In addition, we point out that the observation made earlier in the literature that 2-point site Voronoi diagrams under the sum-of and the product-of Euclidean distances are identical and almost identical to the second order Voronoi diagrams, respectively, holds in a much more general statement.

关键词： computer science Digital arithmetic Mathematics computer graphics Mechanical variables measurement Chebyshev approximation Application software History Information resources Books

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Self-sovereign identity for IoT environments: A perspective

arXiv

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arXiv 2020年

作者： Fedrecheski, Geovane Rabaey, Jan M. Costa, Laisa C.P. Calcina Ccori, Pablo C. Pereira, William T. Zuffo, Marcelo K. Interdisciplinary Center on Interactive Technologies Polytechnic School University of Sao Paulo Brazil Berkeley Wireless Research Center Electrical Engineering and Computer Science Department University California Berkeley United States

—This paper analyses the concept of Self-Sovereign Identity (SSI), an emerging approach for establishing digital identity, in the context of the Internet of Things (IoT). We contrast existing approaches for identity on the Internet, such as cloud-based accounts and digital certificates, with SSI standards such as Decentralized Identifiers (DIDs) and Verifiable Credentials (VCs). To the best of our knowledge, this is the first thorough comparison of these approaches. The benefits and challenges of using DIDs and VCs to identify and authenticate IoT devices and their respective users are discussed. In the end, we establish that SSI, with its owner-centric, privacy-aware and decentrailized approach, provides a viable and attractive option for secure identification of IoT devices and users. Copyright © 2020, The Authors. All rights reserved.

关键词： Internet of things

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Performance evaluation of transmission mode selection in D2D communication

arXiv

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arXiv 2021年

作者： Ioannou, Iacovos Christophorou, Christophoros Vassiliou, Vasos Pitsillides, Andreas Department of Computer Science University of Cyprus Cyprus RISE Center of Excellence on Interactive Media Smart Systems and Emerging Technologies Nicosia Cyprus CITARD Services Ltd Nicosia Cyprus

Device to Device (D2D) Communication is expected to be a core part of the forthcoming 5G Mobile Communication Networks as it promises improvements in energy efficiency, spectral efficiency, overall system capacity, and higher data rates with the use of the same frequencies for different D2D transmissions in short communication distances within the Cell. However, in order to achieve optimum results, it is important, among others, to select wisely the Transmission Mode of the D2D Device. Towards this end, our previous work proposed an intelligent Transmission mode selection approach in a framework that is utilizing Artificial Intelligence (AI) BDIx agents to collectively satisfy the D2D challenges in a Distributed Artificial Intelligent (DAI) manner autonomously and independently. In this paper, as a first step, a literature review focused on related Transmission mode approaches, is performed. Then, our investigated Transmission mode selection approach is further explained with formulas and evaluated based on different threshold values and investigated how these can affect the overall spectral efficiency and power usage of the network in order to achieve the maximum performance. The investigated thresholds(i.e. D2D Device Weighted Data Rate (WDR) and the D2D Device Battery Power Level) and metrics(i.e. WDR) are also further analyzed and formulated. In addition, the effect the transmission power of the D2D links has on the total spectral efficiency and total power consumption of the network, is also examined. This evaluation results arise some interesting findings that can contribute in other approaches that utilized similar or same thresholds. Also, the results obtained demonstrate that with the right tuning of the thresholds and transmission power, one can achieve a significant improvement in the network power usage and total spectral efficiency. © 2021, CC BY-NC-ND.

关键词： 5G mobile communication systems

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An Industrial Internet Cloud-Edge Collaborative Scheme and Evaluation System 3

An Industrial Internet Cloud-Edge Collaborative Scheme and E...

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3rd International Conference on Cloud Computing, Big Data Application and Software Engineering, CBASE 2024

作者： Sun, Tianwen Wang, Yushen Yang, Guang Xiong, Runqun Yang, Kai Zhang, Wenhua System integration center China Mobile Group Jiangsu Co. Ltd. Nanjing China China Mobile Group Jiangsu Co. Ltd. Group Customer Department Nanjing China School of Computer Science Southeast University Nanjing China Migu Interactive Entertainment Co. Ltd. Cloud network technology Department Nanjing China

ISBN: (纸本)9798331506582

The scale of the global cloud computing market is growing rapidly. In the context of the global digital economy, cloud computing has become an inevitable choice for digital transformation of enterprises. With the rapid development of 5G, Internet of things and other technologies, edge computing has attracted more and more attention, and cloud-edge collaboration has become an important trend. Only cloud computing and edge computing can meet the needs of various scenarios through close collaboration, so as to maximize the application value of cloud computing and edge computing. This paper systematically puts forward a cloud edge collaboration scheme in the field of industrial Internet, and provides a standard industrial Internet cloud edge collaboration depth integration rating standard for manufacturing enterprises, which is convenient for scientific evaluation of cloud edge synergy effect. © 2024 IEEE.

关键词： Cloud platforms

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interactive Storytelling 1

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丛书名： Lecture Notes in computer science

1000年

作者： David Oyarzun Federico Peinado R. Michael Young Ane Elizalde Gonzalo Méndez

ISBN: (数字)9783642348518

ISBN: (纸本)9783642348501

This book constitutes the refereed proceedings of the 5th International Conference on interactive Digital Storytelling, ICIDS 2012, San Sebastián, Spain, November 2012. The 14 revised full papers presented together with 6 short papers were carefully reviewed and selected from 48 submissions. The papers are organized in topical sections on theory and aesthetics; authoring tools and applications; evaluation and user experience reports; virtual characters and agents; new storytelling modes; workshops.

关键词： computer Appl. in Arts and Humanities Personal Computing Media Design User Interfaces and Human computer Interaction Artificial Intelligence Arts

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FRSM: A Novel Fault-Tolerant Approach for Redundant-Path-Enabled Service Migration in Mobile Edge Computing 1

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29th International Conference on Web Services, ICWS 2022 Held as Part of the Services Conference Federation, SCF 2022

作者： Zhao, Jiale Dai, Mengxuan Xia, Yunni Ma, Yong He, Meibin Peng, Kai Li, Jianqi Li, Fan Fu, Xiaodong School of Computer Chongqing University Chongqing400030 China School of Computer and Information Engineering Jiangxi Normal University Nanchang330022 China Department of Big Data and AI of Jiangxi Telecom Nanchang330029 China Engineering College Huaqiao University Quanzhou362021 China Global Energy Interconnection Research Institute Co. Ltd. Beijing102209 China Key Laboratory of Fundamental Synthetic Vision Graphics and Image Science for National Defense Sichuan University Chengdu610065 China Data Science Research Center Faculty of Science Kunming University of Science and Technology Kunming650031 China

ISBN: (数字)9783031235795

ISBN: (纸本)9783031235788

Mobile Edge Computing (MEC) provides users with low-latency, highly responsive services by deploying Edge Servers (ESs) near applications. MEC allows any edge-hosted application or service to be migrated between different edge resource providers without being locked into a single provider. Nevertheless, due to its complexity and dynamics, the real edge computing environment is prone to errors and failures, reducing the reliability of edge service migration. This paper proposes a novel fault-tolerant method for redundant path service migration. The method utilizes sliding-window-based model and identifies a set of service migration paths, enabling the evaluation of the time-varying failure rate of ESs. The method combines resubmission and replication mechanisms and decides the edge service migration scheme by selecting multiple redundant migration paths. We also conduct extensive simulations and show that our proposed method outperforms traditional solutions in several metrics. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Mobile edge computing

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Learning Multimodal Latent Dynamics for Human-Robot Interaction

arXiv

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arXiv 2023年

作者： Prasad, Vignesh Heitlinger, Lea Koert, Dorothea Stock-Homburg, Ruth Peters, Jan Chalvatzaki, Georgia Department of Computer Science TU Darmstadt Germany Chair for Marketing and Human Resource Management Department of Law and Economics TU Darmstadt Germany Department of Computer Science TU Darmstadt Germany Centre for Cognitive Science TU Darmstadt Germany Germany Darmstadt Germany Interactive Robot Perception and Learning group Department of Computer Science TU Darmstadt Germany Center for Mind Brain & Behavior Uni. Marburg JLU Giessen Germany

This article presents a method for learning wellcoordinated Human-Robot Interaction (HRI) from Human- Human Interactions (HHI). We devise a hybrid approach using Hidden Markov Models (HMMs) as the latent space priors for a Variational Autoencoder to model a joint distribution over the interacting agents. We leverage the interaction dynamics learned from HHI to learn HRI and incorporate the conditional generation of robot motions from human observations into the training, thereby predicting more accurate robot trajectories. The generated robot motions are further adapted with Inverse Kinematics to ensure the desired physical proximity with a human, combining the ease of joint space learning and accurate task space reachability. For contact-rich interactions, we modulate the robot's stiffness using HMM segmentation for a compliant interaction. We verify the effectiveness of our approach deployed on a Humanoid robot via a user study. Our method generalizes well to various humans despite being trained on data from just two humans. We find that Users perceive our method as more human-like, timely, and accurate and rank our method with a higher degree of preference over other baselines. © 2023, CC BY-NC-SA.

关键词： Anthropomorphic robots

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Vocal activity informed singing voice separation with the iKala dataset

Vocal activity informed singing voice separation with the iK...

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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Tak-Shing Chan Tzu-Chun Yeh Zhe-Cheng Fan Hung-Wei Chen Li Su Yi-Hsuan Yang Roger Jang Research Center for Information Technology Innovation Academia Sinica Taiwan Department of Computer Science and Information Engineering National Taiwan University Taiwan iKala Interactive Media Inc. Taiwan

A new algorithm is proposed for robust principal component analysis with predefined sparsity patterns. The algorithm is then applied to separate the singing voice from the instrumental accompaniment using vocal activity information. To evaluate its performance, we construct a new publicly available iKala dataset that features longer durations and higher quality than the existing MIR-1K dataset for singing voice separation. Part of it will be used in the MIREX Singing Voice Separation task. Experimental results on both the MIR-1K dataset and the new iKala dataset confirmed that the more informed the algorithm is, the better the separation results are.

关键词： Information services Electronic publishing Internet Harmonic analysis MATLAB

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Replication data management: Needs and solutions - An initial evaluation of conceptual approaches for integrating heterogeneous replication study data

Replication data management: Needs and solutions - An initia...

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2013 ACM / IEEE International Symposium on Empirical Software Engineering and Measurement, ESEM 2013

作者： Biffl, Stefan Serral, Estefania Winkler, Dietmar Condori-Fernandez, Nelly Dieste, Oscar Juristo, Natalia Institute of Software Technology and Interactive Systems CDL-Flex Vienna University of Technology Vienna Austria ProS Research Center Universitat Politècnica de València Valencia Spain Facultad de Informática Universidad Politécnica de Madrid Boadilla del Monte Spain Department of Computer Science and Engineering University of Oulu Oulu Finland

[Context] Replication Data Management (RDM) aims at enabling the use of data collections from several itera-tions of an experiment. However, there are several major chal-lenges to RDM from integrating data models and data from em-pirical study infrastructures that were not designed to cooperate, e.g., data model variation of local data sources. [Objective] In this paper we analyze RDM needs and evaluate conceptual RDM approaches to support replication researchers. [Method] We adapted the ATAM evaluation process to (a) analyze RDM use cases and needs of empirical replication study research groups and (b) compare three conceptual approaches to address these RDM needs: central data repositories with a fixed data model, heterogeneous local repositories, and an empirical ecosystem. [Results] While the central and local approaches have major issues that are hard to resolve in practice, the empirical ecosys-tem allows bridging current gaps in RDM from heterogeneous data sources. [Conclusions] The empirical ecosystem approach should be explored in diverse empirical environments. © 2013 IEEE.

关键词： Knowledge management

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