Edge computing enhances task reliability by employing redundant task executions across edge nodes. Conventional decentralized task offloading strategies, based on heuristics and game theory, either focus on optimizati...
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In this paper, we explore delivering mobile edge Virtual Reality (VR) gaming services with comprehensive and satisfactory Quality of Experience (QoE) across a distributed edge network. Our goal is to meet the QoE need...
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ISBN:
(纸本)9798350366495;9798350366488
In this paper, we explore delivering mobile edge Virtual Reality (VR) gaming services with comprehensive and satisfactory Quality of Experience (QoE) across a distributed edge network. Our goal is to meet the QoE needs of all users, addressing both latency and visual considerations. However, the unique characteristics of edge-assisted mobile VR gaming distinguish our challenge from other distributed service provisioning issues. We introduce and address the challenge of provisioning QoE-centric mobile VR gaming services within a distributed edge environment by systematically capturing the unique attributes of mobile VR games. We demonstrate that this challenge can be formulated as a Mixed-Integer Quadratically Constrained Quadratic Programming (MIQCQP) problem. While mobile edge computing holds promise for mobile VR gaming, existing studies often overlook the need to deliver satisfactory QoE to a large user base. Our paper focuses on delivering QoE-centric edge-assisted mobile VR gaming services to multiple users, comprehensively addressing visual and latency concerns.
this research discusses the performance evaluation of distributed database systems in a cloud computing environment Cloud computing environments allow data and applications to be stored and deployed on infrastructure ...
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Withthe rapid increase of data, the scale of cloud is gradually expanding, forming a wide-area cloud platform consisting of multiple data centers distributed across different locations. For industry professionals, ma...
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We consider the problem of cost-effectively mapping a swarm of soft real-time stream processing applications with moldable-parallel tasks to multicore resources in the device-edge-cloud continuum, consisting of mobile...
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ISBN:
(纸本)9798350366495;9798350366488
We consider the problem of cost-effectively mapping a swarm of soft real-time stream processing applications with moldable-parallel tasks to multicore resources in the device-edge-cloud continuum, consisting of mobile devices, edge resources and cloud resources. We leverage flexibility from different parallelization degrees and frequency levels (DVFS) for the tasks, keeping application throughput constraints and communication bandwidth limitations while minimizing overall cost (including device/edge resource energy and cloud resource renting). We present two offline algorithmic solutions with a global view of the environment: an integer linear program (ILP) extending the crown scheduling approach for multi-layer distributedsystems and a greedy heuristic algorithm. Our experimental evaluation for several real-world and synthetic scenarios shows that the time required for solving the scheduling problem to cost-optimality by the ILP is feasible for nontrivial scenarios. the heuristic achieves about 12% worse cost efficiency on average, yet operates much faster (by 1-2 orders of magnitude), allowing to scale up the problem size more than the ILP approach.
Decentralized storage has gained popularity due to its superior fault tolerance, scalability, privacy, and security compared to traditional cloud storage solutions. However, the untrusted and potentially unreliable na...
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ISBN:
(纸本)9798350366495;9798350366488
Decentralized storage has gained popularity due to its superior fault tolerance, scalability, privacy, and security compared to traditional cloud storage solutions. However, the untrusted and potentially unreliable nature of storage nodes in Internet of things (IoT) and edge cloud settings necessitates careful selection of nodes for file storage in open and heterogeneous distributed solutions. We introduce a new trust management system for distributed storage networks that evaluates the performance of nodes in serving files to improve file placement decisions. We consider capacity and reliability as the most important parameters influencing a node's trustworthiness. Capacity refers to the available resources, while reliability is assessed based on node performance in responding to file requests and maintaining file integrity. We present a methodology to combine these two parameters into a joint trust score for node selection. Our experiments show that this trust model can enhance file placement decisions in distributed storage networks by providing more accurate estimations of the nodes' trustworthiness than the existing file placement algorithms.
IoT smart applications must deal withthe inherently distributed nature of IoT infrastructures that may vary among different deployments. For example, in urban environments, some deployments may require distributed ed...
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ISBN:
(纸本)9798350369458;9798350369441
IoT smart applications must deal withthe inherently distributed nature of IoT infrastructures that may vary among different deployments. For example, in urban environments, some deployments may require distributed edge nodes to support the sensors and actuators, while others may skip this processing stage and go directly to the cloud. We propose the concept of an IoT computing Continuum, or IoTinuum, with multiple computing stages spread over the distributed IoT infrastructure. We present the modeling and implementation of two urban use cases for a 6-stage IoTinuum: smart drone delivery and smart structural monitoring. In our experience, the IoTinuum improves the understanding of function placement in application development and reveals important performance tradeoffs.
the particle Markov-chain Monte Carlo (PMCMC) method is a stochastic algorithm that combines Particle Filters (PFs) and Markov-chain Monte Carlo (MCMC) techniques. this approach is widely used in Bayesian inference fo...
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ISBN:
(纸本)9798350350920
the particle Markov-chain Monte Carlo (PMCMC) method is a stochastic algorithm that combines Particle Filters (PFs) and Markov-chain Monte Carlo (MCMC) techniques. this approach is widely used in Bayesian inference for high-dimensional state spaces and nonlinear, non-Gaussian dynamic systems. However, current PMCMC accelerators face significant challenges due to their intensive computational complexity and the intricate particle routing, limiting their application in real-time scenarios. To address these challenges, we propose a novel distributed PMCMC method that leverages parallel computing to enhance hardware execution speed. Additionally, our method introduces a particle exchange scheme that not only resolves the accuracy issues caused by particle routing in distributed PMCMC but also achieves faster computing speed. Our design is implemented on a Xilinx Kintex-7 xc7k480t FPGA device. Experimental results demonstrate that our accelerator is nearly 65x faster than CPU performance, and provides speedups up to 5x compared to existing FPGA-based accelerators.
this work is devoted to an actual survey on advanced security and ensured user privacy for (Highly-) distributedsystems. the last term belongs to thin and thick apps, robot and mobile apps, (micro-)service-oriented a...
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ISBN:
(纸本)9798350390797;9789532901351
this work is devoted to an actual survey on advanced security and ensured user privacy for (Highly-) distributedsystems. the last term belongs to thin and thick apps, robot and mobile apps, (micro-)service-oriented applications, and IoT applications. the most dangerous vulnerabilities, intrusion analysis techniques and models, and countermeasures to increase the safety of the cyber-systems are discussed. AI-based methods are favored nowadays. However, generative models provide some new risks and vulnerabilities. EU legal regulations are considered. Several case studies (among others, for telemedicine and e-health) are examined.
this study has been undertaken to amalgamate the principles of Site Reliability Engineering and Data Engineering to effectively measure, monitor and manage the reliability of petabyte-scale data engineering process fr...
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ISBN:
(纸本)9798400716379
this study has been undertaken to amalgamate the principles of Site Reliability Engineering and Data Engineering to effectively measure, monitor and manage the reliability of petabyte-scale data engineering process from collection at source to processing, analyzing, and distributing the data for appropriate decision making to improve business outcomes and system performance. Modern data architectures increasingly leverage cloud platforms, low-code systems, and serverless technologies to enable scalable data engineering. However, these innovations also introduce new complexities regarding reliability assurance. As these failure-prone yet business-critical data infrastructures continue rapid adoption, it is vital to elucidate architectural paradigms, quantified benchmarks, and procedural methodologies tailored to safeguarding dependability across heterogeneous, distributed data ecosystems. this paper will equip end users with a reusable framework ingrained with best practices to develop a blueprint for data reliability across business units of an organization.
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