检索结果-内蒙古大学图书馆

A distributed computing Solution Based on distributed Kalman Filter for Leak Detection in WSN-Based Water Pipeline Monitoring

引用

SENSORS 2020年第18期20卷 5204页

作者： Nkemeni, Valery Mieyeville, Fabien Tsafack, Pierre Univ Claude Bernard Lyon 1 CNRS UMR5005 Ampere F-69621 Villeurbanne France Univ Buea Fac Engn & Technol POB 63 Buea Cameroon

Wireless Sensor Network (WSN) applications that favor more local computations and less communication can contribute to solving the problem of high power consumption and performance issues plaguing most centralized WSN applications. In this study, we present a fully distributed solution, where leaks are detected in a water distribution network via only local collaborations between a sensor node and its close neighbors, without the need for long-distance transmissions via several hops to a centralized fusion center. A complete approach that includes the design, simulation, and physical measurements, showing how distributed computing implemented via a distributed Kalman filter improves the accuracy of leak detection and the power consumption is presented. The results from the physical implementation show that distributed data fusion increases the accuracy of leak detection while preserving WSN lifetime.

关键词： distributed computing wireless sensor networks distributed Kalman filter water pipeline monitoring distributed data fusion

来源：评论

学校读者我要写书评

暂无评论

Remote Sensing Image Classification Using CNNs With Balanced Gradient for distributed Heterogeneous computing

引用

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS 2022年 19卷 1页

作者： Moreno-Alvarez, Sergio Paoletti, Mercedes E. Cavallaro, Gabriele Rico, Juan A. Haut, Juan M. Univ Extremadura Dept Comp Syst Engn & Telemat Badajoz 06006 Spain Univ Complutense Madrid Dept Comp Architecture Madrid 28040 Spain Forschungszentrum Julich Julich Supercomp Ctr D-52428 Julich Germany Univ Extremadura Dept Technol Comp & Commun Hyperspectral Comp Hypercomp Lab Caceres 10003 Spain

Land-cover classification methods are based on the processing of large image volumes to accurately extract representative features. Particularly, convolutional models provide notable characterization properties for image classification tasks. distributed learning mechanisms on high-performance computing platforms have been proposed to speed up the processing, while achieving an efficient feature extraction. High-performance computing platforms are commonly composed of a combination of central processing units (CPUs) and graphics processing units (GPUs) with different computational capabilities. As a result, current homogeneous workload distribution techniques for deep learning (DL) become obsolete due to their inefficient use of computational resources. To address this, new computational balancing proposals, such as heterogeneous data parallelism, have been implemented. Nevertheless, these techniques should be improved to handle the peculiarities of working with heterogeneous data workloads in the training of distributed DL models. The objective of handling heterogeneous workloads for current platforms motivates the development of this work. This letter proposes an innovative heterogeneous gradient calculation applied to land-cover classification tasks through convolutional models, considering the data amount assigned to each device in the platform while maintaining the acceleration. Extensive experimentation has been conducted on multiple datasets, considering different deep models on heterogeneous platforms to demonstrate the performance of the proposed methodology.

关键词： Training Mathematical models Computational modeling Feature extraction Europe Data models Biological system modeling distributed computing heterogeneous computing image classification remote sensing

来源：评论

学校读者我要写书评

暂无评论

Monitoring of distributed computing Infrastructure in the VI-SEEM Project 18

Monitoring of Distributed Computing Infrastructure in the VI...

引用

18th International Symposium INFOTEH-JAHORINA (INFOTEH)

作者： Savic, Mihajlo Obradovic, Nikola Kelec, Aleksandar Ljubojevic, Milos Univ Banja Luka Fac Elect Engn Banja Luka RS Bosnia & Herceg Govt Republ Srpska Minist Sci & Technol Dev Higher Educ & Informat S Banja Luka RS Bosnia & Herceg

ISBN: (纸本)9781538670736

In this paper we present an approach we have developed to monitor distributed and heterogeneous computing infrastructure with special attention to the implementation in the Virtual research environment for regional Interdisciplinary communities in Southeast Europe and the Eastern Mediterranean project (VI-SEEM). The project infrastructure covers a number of countries and administrative domains as well as several computing paradigms, from classic data center virtualization solutions to grid and high performance computing. We have collected and analyzed available data sources, designed data model and implemented the monitoring system suitable for monitoring of this complex infrastructure. To validate the proposed approach we have tested the system within VI-SEEM project and present the test results in this paper.

关键词： distributed computing grid computing monitoring

来源：评论

学校读者我要写书评

暂无评论

Avalanche blockchain protocol for distributed computing security 7

Avalanche blockchain protocol for distributed computing secu...

引用

7th IEEE International Black Sea Conference on Communications and Networking (IEEE BlackSeaCom)

作者： Tanana, Dmitry Ural Fed Univ Lab Combinatory Algebra Ekaterinburg Russia

ISBN: (纸本)9781728132341

Platforms for distributed computing are able to solve complex problems such as radio telescope signal analysis or protein design. However, the distributed computing systems are also vulnerable to attacks, especially considering the fact that some distributed projects reward their participants, so cybercriminals have incentive to sabotage the project for their own gain. The article considers question of distributed computing security. We propose to use metastable blockchain protocol to ensure that integrity of data is preserved. We also discuss advantages of metastable blockchain protocol over regular one for the task of mass distributed computing. Prototype distributed data processing program was designed for the task of calculating checksums. The program was tested in a controlled virtual machine environment with different checksum algorithms and different number of computing units.

关键词： blockchain distributed computing cybersecurity avalanche consensus

来源：评论

学校读者我要写书评

暂无评论

Quantum Advantage for the LOCAL Model in distributed computing 36

Quantum Advantage for the LOCAL Model in Distributed Computi...

引用

36th International Symposium on Theoretical Aspects of Computer Science (STACS)

作者： Le Gall, Francois Nishimura, Harumichi Rosmanis, Ansis Kyoto Univ Grad Sch Informat Sakyo Ku Kyoto 6068501 Japan Nagoya Univ Grad Sch Informat Chikusa Ku Nagoya Aichi 4648601 Japan Natl Univ Singapore Ctr Quantum Technol Block S153 Sci Dr 2 Singapore 117543 Singapore

ISBN: (纸本)9783959771009

There are two central models considered in (fault -free synchronous) distributed computing: the CONGEST model, in which communication channels have limited bandwidth, and the LOCAL model, in which communication channels have unlimited bandwidth. Very recently, Le Gall and Magniez (PODC 2018) showed the superiority of quantum distributed computing over classical distributed computing in the CONGEST model. In this work we show the superiority of quantum distributed computing in the LOCAL model: we exhibit two computational tasks that can be solved in a constant number of rounds in the quantum setting but require Q(n) rounds in the classical (randomized) setting, where n denotes the size of the network.

关键词： Quantum computing distributed computing LOCAL model

来源：评论

学校读者我要写书评

暂无评论

Optimal Assignment of Resources for distributed computing in Real-Time Applications 4

Optimal Assignment of Resources for Distributed Computing in...

引用

IEEE 4th Colombian Conference on Automatic Control (CCAC) - Automatic Control as Key Support of Industrial Productivity

作者： Norena, Juan Perez, Ernesto Rios, Richard Acosta, Andres Espinosa, Jairo Univ Nacl Colombia Fac Minas PAAS UN Medellin Colombia Univ Nacl Colombia Fac Minas GAUNAL Medellin Colombia

ISBN: (纸本)9781538669624

distributed real-time applications often require an optimal assignment of resources to improve performance. This paper proposes a methodology to optimally assign system resources that enables to minimize the processing and communication time. In this study, we defined a case of study partitioned into six subsystems to be simulated with four available processing units. We used undirected graphs to obtain a representation of the system and subsequently solved the resulting NT -hard problem as a mixed -integer quadratic program (MIQP). We also implemented a comprehensive search as groundwork and compared both methods using computational and global time as metrics. Numerical simulations showed that our methodology obtained both a better assignment of computational resources and significant solution time reduction than the comprehensive search. Moreover, the solution increased the rates of shared information between units during the reconciliation process. This methodology can thus be used in applications like distributed state estimation, distributed control or co-simulation.

关键词： distributed computing real-time computing optimal resource assignment mixed -integer quadratic program graph partition

来源：评论

学校读者我要写书评

暂无评论

Heuristic Rules for Coordinated Resources Allocation and Optimization in distributed computing 19th

Heuristic Rules for Coordinated Resources Allocation and Opt...

引用

19th Annual International Conference on Computational Science (ICCS)

作者： Toporkov, Victor Yemelyanov, Dmitry Natl Res Univ Moscow Power Engn Inst Moscow Russia

ISBN: (纸本)9783030227449;9783030227432

In this paper, we consider heuristic rules for resources utilization optimization in distributed computing environments. Existing modern job-flow execution mechanics impose many restrictions for the resources allocation procedures. Grid, cloud and hybrid computing services operate in heterogeneous and usually geographically distributed computing environments. Emerging virtual organizations and incorporated economic models allow users and resource owners to compete for suitable allocations based on market principles and fair scheduling policies. Subject to these features a set of heuristic rules for coordinated compact scheduling are proposed to select resources depending on how they fit a particular job execution and requirements. Dedicated simulation experiment studies integral job flow characteristics optimization when these rules are applied to conservative backfilling scheduling procedure.

关键词： distributed computing Resource allocation Scheduling Slot Backfilling Economic model Optimization

来源：评论

学校读者我要写书评

暂无评论

Predicting Unethical Physician Behavior At Scale: A distributed computing Framework

Predicting Unethical Physician Behavior At Scale: A Distribu...

引用

IEEE Conference on SmartWorld, Ubiquitous Intelligence and computing, Advanced and Trusted computing, Scalable computing and Communications, Cloud and Big Data computing, Internet of People and Smart City Innovation

作者： Keck, Anastasia Quinn Romero, Miguel Sandor, Robert Woodbridge, Diane Myung-kyung Intrevado, Paul Univ San Francisco Data Sci Program San Francisco CA 94117 USA

ISBN: (纸本)9781728140346

As the amount of publicly shared data increases, developing a robust pipeline to stream, store and process data is critical, as the casual user often lacks the technology, hardware and/or skills needed to work with such voluminous data. In this research, the authors employ Amazon EC2 and EMR and Apache Spark to explore 28.5 gigabytes of CMS Open Payments data in an attempt to identify physicians who may have a high propensity to act unethically, owing to significant transfers of wealth from medical companies. A Random Forest Classifier is employed to predict the top decile of physicians who have the highest risk of unethical behavior in the following year, resulting in an F-Score of 91%. The authors also employ an anomaly detection algorithm that correctly identified a high-profile case of a physician leaving his prestigious position, failing to disclose anomalously-large transfers of wealth from medical companies.

关键词： distributed computing Machine learning Anomaly detection Random Forest Classifier Medical payments

来源：评论

学校读者我要写书评

暂无评论

Utilization of distributed computing in Exhaustive Search for Optimal Block Code 4

Utilization of Distributed Computing in Exhaustive Search fo...

引用

4th International Conference on Communication and Information Systems (ICCIS)

作者： Loahavilai, Phatham Suksompong, Prapun Charoenlarpnopparut, Chalie Thammasat Univ Sirindhorn Int Inst Technol Sch Informat Comp & Commun Technol Pathum Thani Thailand

ISBN: (纸本)9781728162973

This paper presents an implementation of distributed computing to search for the optimal block error control code (covering both linear and nonlinear codes) for binary symmetric channels. The optimality is determined by comparing the decoding error probabilities when maximum likelihood decoders are used under the assumption that the codewords are equally likely. Several pre-processing steps are proposed to reduce the size of the search space. The search gives distance distributions which correspond to closed-form expressions for the minimum decoding error probability. distributed computing is utilized to further reduce the search time. The proposed implementation can be extended to an arbitrary number of cloud servers. The amount of time saved by the search space reduction and distributed computing is also demonstrated.

关键词： block code distributed computing exhaustive search optimal non-linear block code optimal search

来源：评论

学校读者我要写书评

暂无评论

Fuzzy-Based Integration of Security and Trust in distributed computing 7th

Fuzzy-Based Integration of Security and Trust in Distributed...

引用

International Conference on Soft computing for Problem Solving (SocProS)

作者： Kumar, P. Suresh Ramachandram, S. KITS Dept CSE Warangal Telangana India Osmania Univ Univ Coll Engn Dept CSE Hyderabad Telanagana India

ISBN: (纸本)9789811315923;9789811315916

To protect the resources from various vulnerability factors, resources should have various routine security mechanisms such as antivirus capability, firewall capability, usage of secure network connections, provision of execution sandbox, invoking dynamic checkpointing, and intrusion detection system-related capabilities. Security is one of the key issues in distributed computing systems like grid and cloud. Whole system is secured when resources have self-defense capability. Adapting security measures in grid environment is an expensive mechanism and leads to delays in service provisioning whereas trust can be, relatively, a simple and fast solution. In view of the interest of the users and quick delivery of the services by the provider, integration of different combinations of trust levels and security mechanisms can reduce the costs and delays involved in adapting security measures. This paper proposes a new approach for integrating security levels along with trust in general for distributed computing systems and in particular for grid computing systems. Our previous work proposed a T-grid computational model suitable for grid computing systems, which will be used for experimenting and testing the proposed idea of the integration. Results of the studies are produced.

关键词： distributed computing Cloud computing Grid computing Trust Indirect trust Fuzzy Recommendations Security Integration T-grid

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：