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Dissertations / Theses on the topic 'Virtualization: Scheduling'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Burns, Kevin Patrick. "Real-Time Hierarchical Scheduling of Virtualized Systems." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/51790.

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In industry there has been a large focus on system integration and server consolidation, even for real-time systems, leading to an interest in virtualization. However, many modern hypervisors do not inherently support the strict timing guarantees of real-time applications. There are several challenges that arise when trying to virtualize a real-time application. One key challenge is to maintain the guest's real-time guarantees. In a typical virtualized environment there is a hierarchy of schedulers. Past solutions solve this issue by strict resource reservation models. These reservations are p

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2

Svärd, Petter. "Dynamic Cloud Resource Management : Scheduling, Migration and Server Disaggregation." Doctoral thesis, Umeå universitet, Institutionen för datavetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-87904.

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A key aspect of cloud computing is the promise of infinite, scalable resources, and that cloud services should scale up and down on demand. This thesis investigates methods for dynamic resource allocation and management of services in cloud datacenters, introducing new approaches as well as improvements to established technologies.Virtualization is a key technology for cloud computing as it allows several operating system instances to run on the same Physical Machine, PM, and cloud services normally consists of a number of Virtual Machines, VMs, that are hosted on PMs. In this thesis, a novel

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Bai, Hao. "Scheduling Design for Advance Virtual Network Services." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6461.

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Network virtualization allows operators to host multiple client services over their base physical infrastructures. Today, this technique is being used to support a wide range of applications in cloud computing services, content distribution, large data backup, etc. Accordingly, many different algorithms have also been developed to achieve efficient mapping of client virtual network (VN) requests over physical topologies consisting of networking infrastructures and datacenter compute/storage resources. However as applications continue to expand, there is a growing need to implement scheduling c

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4

Drescher, Michael Stuart. "A Flattened Hierarchical Scheduler for Real-Time Virtual Machines." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/78125.

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The recent trend of migrating legacy computer systems to a virtualized, cloud-based environment has expanded to real-time systems. Unfortunately, modern hypervisors have no mechanism in place to guarantee the real-time performance of applications running on virtual machines. Past solutions to this problem rely on either spatial or temporal resource partitioning, both of which under-utilize the processing capacity of the host system. Paravirtualized solutions in which the guest communicates its real-time needs have been proposed, but they cannot support legacy operating systems. This thesis dem

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Venkatesh, Venkataramanan. "Optimization of CPU Scheduling in Virtual Machine Environments." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33380.

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Data centres and other infrastructures in the field of information technology suffer from the major issue of ‘server sprawl’, a term used to depict the situation wherein a number of servers consume resources inefficiently, when compared to the business value of outcome obtained from them. Consolidation of servers, rather than dedicating whole servers to individual applications, optimizes the usage of hardware resources, and virtualization achieves this by allowing multiple servers to share a single hardware platform. Server virtualization is facilitated by the usage of hypervisors, among which

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6

Wenkai, Wang. "COMPARISON OF BUDGET BORROWING AND BUDGET ADAPTATION IN HIERARCHICAL SCHEDULING FRAMEWORK." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-31091.

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System virtualization technology is widely used in computing nowadays. In embedded domain, it is used as a solution to resource sharing among independent applications. One of the areas is to apply virtualization technique to real-time embedded systems with timing constraints. Multi-level adaptive hierarchical scheduling (AdHierSched) framework is a virtualized real-time framework, which runs in the Linux operating system. is virtualized framework has ability to adapt the CPU partition sizes according to their need through monitoring their demand during run-time, which yields more appropriate

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7

Alnowiser, Abdulaziz Mohammed. "TOWARD ENERGY-EFFICIENT SCHEDULING USING WEIGHTED ROUND-ROBIN AND VM REUSE." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/theses/1303.

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AN ABSTRACT OF THE THESIS OF Abdulaziz M. AlNowiser, for the Master of Science degree in Computer Science, presented on November 1, 2013, at Southern Illinois University Carbondale. TITLE: TOWARD ENERGY-EFFICIENT SCHEDULING USING WEIGHTED ROUND- ROBIN AND VM REUSE MAJOR PROFESSOR: Dr. Michelle M. Zhu In recent years, the rapid evolving Cloud Computing technologies multiply challenges such as minimizing power consumption and meeting Quality-of-Services (QoS) requirements in the presence of heavy workloads from a large number of users using shared computing resources. Powering a middle-sized dat

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Lee, Min. "Memory region: a system abstraction for managing the complex memory structures of multicore platforms." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50398.

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The performance of modern many-core systems depends on the effective use of their complex cache and memory structures, and this will likely become more pronounced with the impending arrival of on-chip 3D stacked and non-volatile off-chip byte-addressable memory. Yet to date, operating systems have not treated memory as a first class schedulable resource, embracing memory heterogeneity. This dissertation presents a new software abstraction, called ‘memory region’, which denotes the current set of physical memory pages actively used by workloads. Using this abstraction, memory resources can be s

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9

Smith, James William. "Investigating performance and energy efficiency on a private cloud." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/6540.

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Organizations are turning to private clouds due to concerns about security, privacy and administrative control. They are attracted by the flexibility and other advantages of cloud computing but are wary of breaking decades-old institutional practices and procedures. Private Clouds can help to alleviate these concerns by retaining security policies, in-organization ownership and providing increased accountability when compared with public services. This work investigates how it may be possible to develop an energy-aware private cloud system able to adapt workload allocation strategies so that o

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10

Delgado, Javier. "Scheduling Medical Application Workloads on Virtualized Computing Systems." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/633.

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This dissertation presents and evaluates a methodology for scheduling medical application workloads in virtualized computing environments. Such environments are being widely adopted by providers of “cloud computing” services. In the context of provisioning resources for medical applications, such environments allow users to deploy applications on distributed computing resources while keeping their data secure. Furthermore, higher level services that further abstract the infrastructure-related issues can be built on top of such infrastructures. For example, a medical imaging service can allow m

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11

Kherbache, Vincent. "Ordonnancement des migrations à chaud de machines virtuelles." Thesis, Université Côte d'Azur (ComUE), 2016. http://www.theses.fr/2016AZUR4130/document.

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Migrer à chaud une machine virtuelle (VM) est une opération basique dans un centre de données. Tous les jours, des VM sont migrées pour répartir la charge, économiser de l'énergie ou préparer la maintenance de serveurs. Bien que les problèmes de placement des VM soient beaucoup étudiés, on observe que la gestion des migrations permettant de transiter vers ces nouveaux placements reste un domaine de second plan. Cette phase est cependant critique car chaque migration à un coût en terme de CPU, de bande passante et d'énergie. Des algorithmes de décision reposent alors sur des hypothèses irréalis

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Raffa, Viviana. "Edge/cloud virtualization techniques and resources allocation algorithms for IoT-based smart energy applications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22864/.

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Nowadays, the installation of residential battery energy storage (BES) has increased as a consequence of the decrease in the cost of batteries. The coupling of small-scale energy generation (residential PV) and residential BES promotes the integration of microgrids (MG), i.e., clusters of local energy sources, energy storages, and customers which are represented as a single controllable entity. The operations between multiple grid-connected MGs and the distribution network can be coordinated by controlling the power exchange; however, in order to achieve this level of coordination, a co

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Gajdušek, Ondřej. "Virtuální servery s operačním systémem Fedora." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442386.

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This thesis deals with the PlanetLab Server Manager application whose aim is to simplify application development within the experimental distributed network PlanetLab. Thesis presents the PlanetLab network and describes its infrastructure. Application PlanetLab Server Manager, shortly abbreviated as plbmng, is described, its current state is evaluated and the existing functionality is presented to the reader. Further work focuses mainly on the implementation of the new functionality that is a software distribution and job scheduling to run the software at the specified time. The last part of t

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14

Bacou, Mathieu. "Performance et gestion de ressources dans un cloud multi-virtualisé." Thesis, Toulouse, INPT, 2020. http://www.theses.fr/2020INPT0042.

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Le cloud computing permet aux entreprises de réduire la barrière et les coûts d'utilisation de l'informatique, en mutualisant les besoins avec d'autres utilisateurs. Cette mutualisation est permise par la technologie de la virtualisation. Il s'agit de vendre les ressources physiques, concrètes, d'un centre d'hébergement, comme des ressources virtuelles, logiques. L'efficacité de la solution de virtualisation, sur différents critères, est au coeur des préoccupations à la fois des fournisseurs de cloud, et des clients. Les premiers veulent servir le plus grand nombre de clients possibles avec le

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15

Gupta, Vishakha. "Coordinated system level resource management for heterogeneous many-core platforms." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42750.

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A challenge posed by future computer architectures is the efficient exploitation of their many and sometimes heterogeneous computational cores. This challenge is exacerbated by the multiple facilities for data movement and sharing across cores resident on such platforms. To answer the question of how systems software should treat heterogeneous resources, this dissertation describes an approach that (1) creates a common manageable pool for all the resources present in the platform, and then (2) provides virtual machines (VMs) with multiple `personalities', flexibly mapped to and efficientl

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Amaral, Marcelo. "Improving resource efficiency in virtualized datacenters." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/666753.

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In recent years there has been an extraordinary growth of the Internet of Things (IoT) and its protocols. The increasing diffusion of electronic devices with identification, computing and communication capabilities is laying ground for the emergence of a highly distributed service and networking environment. The above mentioned situation implies that there is an increasing demand for advanced IoT data management and processing platforms. Such platforms require support for multiple protocols at the edge for extended connectivity with the objects, but also need to exhibit uniform internal data

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Bollengier, Théotime. "Du prototypage à l’exploitation d’overlays FPGA." Thesis, Brest, École nationale supérieure de techniques avancées Bretagne, 2018. http://www.theses.fr/2018ENTA0003/document.

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De part leur capacité de reconfiguration et les performances qu’ils offrent, les FPGAs sont de bons candidats pour accélérer des applications dans le Cloud. Cependant, les FPGAs présentent certaines caractéristiques qui font obstacle à leur utilisation dans le Cloud et leur adoption par les clients : premièrement, la programmation des FPGAs se fait à bas niveau et demande une certaine expertise, que n’ont pas nécessairement les clients habituels du Cloud. Deuxièmement, les FPGAs ne présentent pas de mécanismes natifs permettant leur intégration dans le modèle de gestion dynamique d’une infrast

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18

Xu, Yan. "Gestion logicielle légère pour la reconfiguration dynamique partielle sur les FPGAs." Phd thesis, Université de Grenoble, 2014. http://tel.archives-ouvertes.fr/tel-01060171.

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Cette thèse s'intéresse aux architectures contenant des FPGAs reconfigurables dynamiquement et partiellement. Dans ces architectures, la complexité et la difficulté de portage des applications sont principalement dues aux connections étroites entre la gestion de la reconfiguration et le calcul lui-même. Nous proposons 1) un nouveau niveau d'abstraction, appelé gestionnaire de composants matériels (HCM) et 2) un mécanisme de communication scalable (SCM), qui permettent une séparation claire entre l'allocation d'une fonction matérielle et la procédure de reconfiguration. Cela réduit l'impact de

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19

Luong, Duc-Hung. "On resource allocation in cloudified mobile network." Thesis, La Rochelle, 2019. http://www.theses.fr/2019LAROS031.

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Le trafic mobile a considérablement augmenté ces dernières années motivant une évolution vers la prochaine génération de réseau mobile, la 5G. La virtualisation des fonctions du réseau (Network Function Virtualization, NFV), la programmabilité du réseau (Software-Defined Networking, SDN) et l’informatique en nuage (Cloud Computing) sont les technologies retenues pour la mise en œuvre de cette évolution. Ces technologies offrent la flexibilité et l'élasticité nécessaires pour répondre aux défis de la 5G. Cependant, même si ces technologies semblent nécessaires pour la conception de la 5G, reste

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20

Quesnel, Flavien. "Vers une gestion coopérative des infrastructures virtualisées à large échelle : le cas de l'ordonnancement." Phd thesis, Ecole des Mines de Nantes, 2013. http://tel.archives-ouvertes.fr/tel-00821103.

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Les besoins croissants en puissance de calcul sont généralement satisfaits en fédérant de plus en plus d'ordinateurs (ou noeuds) pour former des infrastructures distribuées. La tendance actuelle est d'utiliser la virtualisation système dans ces infrastructures, afin de découpler les logiciels des noeuds sous-jacents en les encapsulant dans des machines virtuelles. Pour gérer efficacement ces infrastructures virtualisées, de nouveaux gestionnaires logiciels ont été mis en place. Ces gestionnaires sont pour la plupart hautement centralisés (les tâches de gestion sont effectuées par un nombre res

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21

Rego, Paulo Antonio Leal. "FairCPU: Uma Arquitetura para Provisionamento de MÃquinas Virtuais Utilizando CaracterÃsticas de Processamento." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7653.

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FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico<br>O escalonamento de recursos Ã um processo chave para a plataforma de ComputaÃÃo em Nuvem, que geralmente utiliza mÃquinas virtuais (MVs) como unidades de escalonamento. O uso de tÃcnicas de virtualizaÃÃo fornece grande flexibilidade com a habilidade de instanciar vÃrias MVs em uma mesma mÃquina fÃsica (MF), modificar a capacidade das MVs e migrÃ-las entre as MFs. As tÃcnicas de consolidaÃÃo e alocaÃÃo dinÃmica de MVs tÃm tratado o impacto da sua utilizaÃÃo como uma medida independente de localizaÃÃo. Ã geralmente aceito

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22

Quintuna, Rodriguez Verónica Karina. "Nouvelle commande réseau / IT : Performance des fonctions virtualisées pour une infrastructure programmable." Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS099.

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Dans le cadre de la virtualisation des fonctions réseau, nous abordons dans cette thèse l’analyse de la performance de fonctions réseau virtualisées (en anglais VNF). Nous étudions en particulier le problème de latence qui inclut le temps total nécessaire pour traiter une VNFs dans un centre de données. Le cas d'usage de cette étude est la virtualisation du réseau d'accès radio (à savoir, Cloud-RAN). Nous étudions concrètement la pertinence de la mise en commun de ressources et du multiplexage statistique lorsque les cœurs disponibles dans un centre de données sont partagés par toutes les VNF

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23

Chang, Che-Wei, and 張哲瑋. "HSA System Virtualization and GPU Scheduling." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/83033771144861607197.

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碩士<br>國立臺灣大學<br>資訊工程學研究所<br>102<br>Heterogeneous computing has been proposed to incorporate specialized processing capabilities (e.g. GPU, DSP and FPGA) in order to handle particular tasks. However, there are some drawbacks of current heterogeneous computing. In order to improve the performance, HSA foundation proposed the Heterogeneous System Architecture (HSA). In this thesis work, we investigate on the techniques for virtualizing an HSA platform to support various types of usages with virtual machines. We first delivered a system that emulates system virtualization of HSA. Second, we propos

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Kedalagudde, Priyanka Dattatri. "VIRTUALIZATION OF CLOSED-LOOP SENSOR NETWORKS." 2017. https://scholarworks.umass.edu/masters_theses_2/511.

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The existing closed-loop sensor networks are based on architectures that are designed and implemented for one specific application and require dedicated sensing and computational resources. This prevents the sharing of these networks. In this work, we propose an architecture of virtualization to allow sharing of closed-loop sensor networks. We also propose a scheduling approach that will manage requests from competing applications and evaluate their impact on system utilization against utilization achieved by more traditional, dedicated sensor networks. These algorithms are evaluated through t

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25

Ou, Ting-Wei, and 歐庭瑋. "A Data Temperature Restore Scheduling System with Container-based Virtualization for Cloud Applications." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/22809986435557630954.

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碩士<br>國立中興大學<br>資訊科學與工程學系<br>104<br>As cloud computing grows in popularity, IDC reports that the amount of data in the Internet is doubling the rate of size growth every two years, and it will reach 44 zettabytes by 2020. IDC also noted that the downtime cost from infrastructure failures, data loss, and human error is $1 million per hour, which is tremendous loss for business. It shows the high availability and reliability are important for enterprises. Previous studies with high availability mostly adopted continuous data protection (CDP) to ensure that the data will not lost. However, they

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Buchar, Jan. "Vyvažování zátěže v systémech pro vyhodnocování programátorských úloh." Master's thesis, 2020. http://www.nusl.cz/ntk/nusl-415560.

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Systems for automated evaluation of assignments are a valuable aid for both teachers of programming courses and their students. The objective of this thesis is to examine the possibilities of deploying such systems in a large-scale distributed environment and the challenges of such endeavors. A sizable part of the requirements comes from experience with ReCodEx - an assignment evaluation system developed at the department of the supervisor. Modern server multi-core processors provide considerable computing power that can be used for assignment evaluation. However, parallel measurements can int

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Jain, Nitisha. "Performance Specific I/O Scheduling Framework for Cloud Storage." Thesis, 2015. http://etd.iisc.ernet.in/2005/3765.

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Virtualization is one of the important enabling technologies for Cloud Computing which facilitates sharing of resources among the virtual machines. However, it incurs performance overheads due to contention of physical devices such as disk and network bandwidth. Various I/O applications having different latency requirements may be executing concurrently on different virtual machines provisioned on a single server in Cloud data-centers. It is pertinent that the performance SLAs of such applications are satisfied through intelligent scheduling and allocation of disk resour

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Poon, Wing-Chi. "Real-time hierarchical hypervisor." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-08-1842.

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Both real-time virtualization and recursive virtualization are desirable properties of a virtual machine monitor (or hypervisor). Although the prospect for virtualization and even recursive virtualization has become better as the PC hardware becomes faster, the real-time systems community so far has not been able to reap much benefits. This is because no existing virtualization mechanism can properly support the stringent timing requirements needed by real-time systems. It is hard to do real-time virtualization, and it is even harder to do it recursively. In this dissertation, we propose a fra

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(9187466), Bharath Kumar Comandur Jagannathan Raghunathan. "Semantic Labeling of Large Geographic Areas Using Multi-Date and Multi-View Satellite Images and Noisy OpenStreetMap Labels." Thesis, 2020.

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<div>This dissertation addresses the problem of how to design a convolutional neural network (CNN) for giving semantic labels to the points on the ground given the satellite image coverage over the area and, for the ground truth, given the noisy labels in OpenStreetMap (OSM). This problem is made challenging by the fact that -- (1) Most of the images are likely to have been recorded from off-nadir viewpoints for the area of interest on the ground; (2) The user-supplied labels in OSM are frequently inaccurate and, not uncommonly, entirely missing; and (3) The size of the area covered on the gro

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