This work advances cloud and edge computing security, especially in distrib-uted systems. The suggested response has been extensively tested and shown to improve authentication, access control, hazard detection, and d...
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The evolution of the distributedcomputing paradigm had as a result new computing models such as grid and cloud computing. Furthermore, in these environments it is common to run complex parallel applications thus maki...
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The exponential growth of IoT applications due to user demands necessitates the emergence of reliable fog/edge computingsystems. Because of the wide-open area of these systems, the tendency for failure in communicati...
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ISBN:
(纸本)9798350372113;9798350372106
The exponential growth of IoT applications due to user demands necessitates the emergence of reliable fog/edge computingsystems. Because of the wide-open area of these systems, the tendency for failure in communication channels and computing nodes (resources) is unpredictable, especially in real-time IoT applications. Several studies have aimed at tackling fault and failure issues by employing a variety of resource management strategies. Most studies use heuristics or conventional scheduling approaches that leverage the use of reinforcement learning. The element of reinforcement learning aims to support better governance when resource faults and failures occur. This paper provides an analysis of the implementation of reinforcement learning (RL) into fault-tolerant scheduling in fog/edge computingsystems. The efficacy of fault-tolerant scheduling is claimed to be improved through RL with regard to system performance. We grouped the discussion based on three themes: resource failures, reinforcement learning (RL) in general, and RL scheduling for fault tolerance. The discussion could further derive solutions for overcoming the challenges of resource failures in fog/edge systems.
Many real-world systems, especially systems characterized by high social activity (such as the Web), tend to obey power law distributions and thereby have a significant 'long tail'. We argue that researching, ...
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ISBN:
(纸本)9798350385359
Many real-world systems, especially systems characterized by high social activity (such as the Web), tend to obey power law distributions and thereby have a significant 'long tail'. We argue that researching, developing and designing semantic computingsystems for the long tail, especially dependent on inductive AI, constitutes an important class of problems, not least because the long tail is challenging both technically and socially. By its very nature, the long tail is irregular, testing the generalization capabilities of the state-of-the-art, especially in architectures and interfaces that are built on some form of machine learning or statistical inference (including large language models). As machine learning and generative AI continues to be integrated into more front facing systems, the issue of the long tail cannot be ignored by either the systems engineering or the AI communities. We present two case studies with important social consequences (fighting human trafficking online, and managing information effectively and in real-time during humanitarian crises) where semantic computing and AI platforms specifically designed to handle long-tail challenges find critical application, and sometimes with drastically different design choices compared to designing only for the short tail (with the main goal of maximizing average accuracy).
In recent years, many educational institutions have adopted information systems such as e-Learning platforms and groupware. However, these existing information systems often have significant installation, operation, a...
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Fuzzy joins are widely used in a variety of data analysis applications such as data integration, data mining, and master data management. In the context of Big Data, computing fuzzy joins is challenging due to the hig...
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ISBN:
(纸本)9798350332285
Fuzzy joins are widely used in a variety of data analysis applications such as data integration, data mining, and master data management. In the context of Big Data, computing fuzzy joins is challenging due to the high computational cost required and the communication cost. While on one hand big fuzzy joins on relational data and on the other hand joins on tree-structured data have been investigated in the literature, to the best of our knowledge, combining the two is still an open problem. In this context, we study methods for leveraging distributed environments in order to compute fuzzy joins over large collections of JSON documents. Our algorithms take into account both the text-similarity of the joining data, as well as its structural similarity.
The embedded distributedcomputing platform runs large-scale tasks with high complexity and high computing capacity requirements, and divides the embedded tasks required by super computing capacity into multiple indep...
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Formal validation of the design and properties of distributed software entities for Cyber Physical systems (CPS) is challenging due to the non-linear sequence of operations and multiple possible inter-leavings of even...
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ISBN:
(纸本)9798350339024
Formal validation of the design and properties of distributed software entities for Cyber Physical systems (CPS) is challenging due to the non-linear sequence of operations and multiple possible inter-leavings of events and processes. Current model-checking tools are more suited to represent independent systems or pieces of code that are self-contained and rarely consider interactions between different participants of a composite distributed software application. This paper introduces an automated model generation tool for distributed CPS software applications written in a software framework called RIAPS. The tool combines the application model, edge deployment architecture, and individual component level source code annotated with user-supplied timing parameters to produce a network of Timed Automata models compatible with the popular model checker UPPAAL. The generated model can then be verified using UPPAAL's formal verification engine. The article uses a simple distributed application example CPS to demonstrate how the tool can be used to verify and compare the design and timing of different deployment configurations.
The increasing demand for video data traffic, along with the proliferation of smart devices, poses significant challenges to content and Internet service providers. In response to this challenge, content caching on mo...
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ISBN:
(纸本)9798350363999;9798350364002
The increasing demand for video data traffic, along with the proliferation of smart devices, poses significant challenges to content and Internet service providers. In response to this challenge, content caching on mobile edge computing (MEC) servers has emerged to reduce content download latency. However, existing caching solutions often assume stationary content popularity or require real-time knowledge of popularity, which does not align with real-world scenarios. To address these limitations, we introduce ProCache, a novel content caching algorithm. ProCache takes into account spatial and temporal monetary budget sharing for caching, content sizes, and original server locations while dealing with uncertain regional content popularity. The goal of ProCache is to minimize the long-term expected content download latency overall active users, comprising two key components. First, the deep learning module includes the 1DCNN-LSTM-Dense layered deep learning model for predicting future content requests and the data mapping module which makes the model focus more on the request trend rather than the magnitude. Second, based on our predictions, the stochastic optimization module runs a dynamic content caching algorithm based on the Lyapunov optimization technique that operates in a fully distributed manner by region and ensures overall performance bounds. Trace-driven simulations using the YouTube dataset demonstrate that ProCache outperforms existing prediction models and content caching algorithms.
Power factor improvement in Radial Distribution systems (RDS) is done by placing distributed Generation (DG) in the best possible location, this study compares two optimization algorithms: the innovative Fruit Fly Alg...
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