Dissertations / Theses on the topic 'Real time prediction'
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Neikter, Carl-Fredrik. "Cache Prediction and Execution Time Analysis on Real-Time MPSoC." Thesis, Linköping University, Department of Computer and Information Science, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15394.
Full textReal-time systems do not only require that the logical operations are correct. Equally important is that the specified time constraints always are complied. This has successfully been studied before for mono-processor systems. However, as the hardware in the systems gets more complex, the previous approaches become invalidated. For example, multi-processor systems-on-chip (MPSoC) get more and more common every day, and together with a shared memory, the bus access time is unpredictable in nature. This has recently been resolved, but a safe and not too pessimistic cache analysis approach for MPSoC has not been investigated before. This thesis has resulted in designed and implemented algorithms for cache analysis on real-time MPSoC with a shared communication infrastructure. An additional advantage is that the algorithms include improvements compared to previous approaches for mono-processor systems. The verification of these algorithms has been performed with the help of data flow analysis theory. Furthermore, it is not known how different types of cache miss characteristic of a task influence the worst case execution time on MPSoC. Therefore, a program that generates randomized tasks, according to different parameters, has been constructed. The parameters can, for example, influence the complexity of the control flow graph and average distance between the cache misses.
Chen, Hao. "Real-time Traffic State Prediction: Modeling and Applications." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/64292.
Full textPh. D.
Gross, Hans-Gerhard. "Measuring evolutionary testability of real-time software." Thesis, University of South Wales, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365087.
Full textBrune, Sascha. "Landslide generated tsunamis : numerical modeling and real-time prediction." Phd thesis, Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2009/3298/.
Full textSubmarine Erdrutsche können lokale Tsunamis auslösen und stellen somit eine Gefahr für Siedlungen an der Küste und deren Einwohner dar. Zwei Hauptprobleme sind (i) die quantitative Abschätzung der Gefahr, die von einem Tsunami ausgeht und (ii) das schnelle Erkennen von gefährlichen Rutschungsereignissen. In dieser Doktorarbeit beschäftige ich mich mit beiden Problemen, indem ich Erdrutschtsunamis numerisch modelliere und eine neue Methode vorstelle, in der submarine Erdrutsche mit Hilfe von Tiltmetern detektiert werden. Die Küstengebiete Indonesiens sind wegen der Nähe zur Sunda-Subduktionszone besonders durch Tsunamis gefährdet. Das Ziel des GITEWS-Projektes (Deutsch- Indonesisches Tsunami-Frühwarnsystem) ist es, schnell und verlässlich vor Tsunamis zu warnen, aber auch das Wissen über Tsunamis und ihre Anregung zu vertiefen. Neue bathymetrische Daten am Sundabogen bieten die Möglichkeit, das Gefahrenpotential von Erdrutschtsunamis für die anliegenden indonesischen Inseln zu studieren. Ich präsentiere neun große Rutschungereignisse nahe Sumatra, Java, Sumbawa und Sumba, wobei das größte von ihnen 20 km³ Sediment bewegte. Ich modelliere die Ausbreitung und die Überschwemmung der bei diesen Rutschungen angeregten Tsunamis. Weiterhin untersuche ich das Alter der größten Hanginstabilitäten, indem ich sie zu dem Sumba Erdbeben von 1977 in Beziehung setze. Die Kontinentalhänge im Nordwesten Europa sind für Ihre immensen unterseeischen Rutschungen bekannt. Die gegenwärtige geologische Situation westlich von Spitzbergen ist vergleichbar mit derjenigen des norwegischen Kontinentalhangs nach der letzten Vergletscherung, als der große Tsunamianregende Storegga-Erdrutsch stattfand. Der Einfluss der arktischen Erwärmung auf die Hangstabilität vor Spitzbergen wird untersucht. Basierend auf neuen geophysikalischen Messungen, konstruiere ich vier mögliche Rutschungsszenarien und berechne die entsprechenden Tsunamis. Wellen von 6 Metern Höhe könnten dabei Nordwesteuropa erreichen. Ich stelle eine neue Methode vor, mit der große submarine Erdrutsche mit Hilfe eines Netzes aus Tiltmetern erkannt werden können. Diese Methode könnte in einem Tsunami-Frühwarnsystem angewendet werden. Sie basiert darauf, dass die Bewegung von großen Sedimentmassen während einer Rutschung eine dauerhafte Verformung der Erdoberfläche auslöst. Ich berechne diese Verformung und das einhergehende Tiltsignal. Im Falle der hypothetischen Spitzbergen-Rutschung sowie für das Storegga-Ereignis erhalte ich Amplituden von mehr als 1000 nrad. Die Wellenhöhe von Erdrutschtsunamis wird in erster Linie von dem Produkt aus Volumen und maximaler Rutschungsgeschwindigkeit (dem Tsunamipotential einer Rutschung) bestimmt. Ich führe eine Inversionsroutine vor, die unter Verwendung von Tiltdaten den Ort und das Tsunamipotential einer Rutschung bestimmt. Die Genauigkeit dieser Inversion und damit der vorhergesagten Wellenhöhe an der Küste hängt von dem Fehler der Tiltdaten, der Entfernung zwischen Tiltmeter und Rutschung sowie vom Tsunamipotential ab. Letztlich bestimme ich die Anwendbarkeitsreichweite dieser Methode, indem ich sie auf bekannte Rutschungsereignisse weltweit beziehe.
Raykhel, Ilya. "Real-time automatic price prediction for eBay online trading /." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2697.pdf.
Full textCosma, Andrei Claudiu. "Real-Time Individual Thermal Preferences Prediction Using Visual Sensors." Thesis, The George Washington University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=13422566.
Full textThe thermal comfort of a building’s occupants is an important aspect of building design. Providing an increased level of thermal comfort is critical given that humans spend the majority of the day indoors, and that their well-being, productivity, and comfort depend on the quality of these environments. In today’s world, Heating, Ventilation, and Air Conditioning (HVAC) systems deliver heated or cooled air based on a fixed operating point or target temperature; individuals or building managers are able to adjust this operating point through human communication of dissatisfaction. Currently, there is a lack in automatic detection of an individual’s thermal preferences in real-time, and the integration of these measurements in an HVAC system controller.
To achieve this, a non-invasive approach to automatically predict personal thermal comfort and the mean time to discomfort in real-time is proposed and studied in this thesis. The goal of this research is to explore the consequences of human body thermoregulation on skin temperature and tone as a means to predict thermal comfort. For this reason, the temperature information extracted from multiple local body parts, and the skin tone information extracted from the face will be investigated as a means to model individual thermal preferences.
In a first study, we proposed a real-time system for individual thermal preferences prediction in transient conditions using temperature values from multiple local body parts. The proposed solution consists of a novel visual sensing platform, which we called RGB-DT, that fused information from three sensors: a color camera, a depth sensor, and a thermographic camera. This platform was used to extract skin and clothing temperature from multiple local body parts in real-time. Using this method, personal thermal comfort was predicted with more than 80% accuracy, while mean time to warm discomfort was predicted with more than 85% accuracy.
In a second study, we introduced a new visual sensing platform and method that uses a single thermal image of the occupant to predict personal thermal comfort. We focused on close-up images of the occupant’s face to extract fine-grained details of the skin temperature. We extracted manually selected features, as well as a set of automated features. Results showed that the automated features outperformed the manual features in all the tests that were run, and that these features predicted personal thermal comfort with more than 76% accuracy.
The last proposed study analyzed the thermoregulation activity at the face level to predict skin temperature in the context of thermal comfort assessment. This solution uses a single color camera to model thermoregulation based on the side effects of the vasodilatation and vasoconstriction. To achieve this, new methods to isolate skin tone response to an individual’s thermal regulation were explored. The relation between the extracted skin tone measurement and the skin temperature was analyzed using a regression model.
Our experiments showed that a thermal model generated using noninvasive and contactless visual sensors could be used to accurately predict individual thermal preferences in real-time. Therefore, instantaneous feedback with respect to the occupants' thermal comfort can be provided to the HVAC system controller to adjust the room temperature.
Raykhel, Ilya Igorevitch. "Real-Time Automatic Price Prediction for eBay Online Trading." BYU ScholarsArchive, 2008. https://scholarsarchive.byu.edu/etd/1631.
Full textSu, Yibing. "Real-time prediction of stream water temperature for Iowa." Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5653.
Full textNaye, Edouard. "Real-time arrival prediction models for light rail train systems." Thesis, KTH, Systemanalys och ekonomi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170645.
Full textBataineh, Mohammad Hindi. "New neural network for real-time human dynamic motion prediction." Thesis, The University of Iowa, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3711174.
Full textArtificial neural networks (ANNs) have been used successfully in various practical problems. Though extensive improvements on different types of ANNs have been made to improve their performance, each ANN design still experiences its own limitations. The existing digital human models are mature enough to provide accurate and useful results for different tasks and scenarios under various conditions. There is, however, a critical need for these models to run in real time, especially those with large-scale problems like motion prediction which can be computationally demanding. For even small changes to the task conditions, the motion simulation needs to run for a relatively long time (minutes to tens of minutes). Thus, there can be a limited number of training cases due to the computational time and cost associated with collecting training data. In addition, the motion problem is relatively large with respect to the number of outputs, where there are hundreds of outputs (between 500-700 outputs) to predict for a single problem. Therefore, the aforementioned necessities in motion problems lead to the use of tools like the ANN in this work.
This work introduces new algorithms for the design of the radial-basis network (RBN) for problems with minimal available training data. The new RBN design incorporates new training stages with approaches to facilitate proper setting of necessary network parameters. The use of training algorithms with minimal heuristics allows the new RBN design to produce results with quality that none of the competing methods have achieved. The new RBN design, called Opt_RBN, is tested on experimental and practical problems, and the results outperform those produced from standard regression and ANN models. In general, the Opt_RBN shows stable and robust performance for a given set of training cases.
When the Opt_RBN is applied on the large-scale motion prediction application, the network experiences a CPU memory issue when performing the optimization step in the training process. Therefore, new algorithms are introduced to modify some steps of the new Opt_RBN training process to address the memory issue. The modified steps should only be used for large-scale applications similar to the motion problem. The new RBN design proposes an ANN that is capable of improved learning without needing more training data. Although the new design is driven by its use with motion prediction problems, the consequent ANN design can be used with a broad range of large-scale problems in various engineering and industrial fields that experience delay issues when running computational tools that require a massive number of procedures and a great deal of CPU memory.
The results of evaluating the modified Opt_RBN design on two motion problems are promising, with relatively small errors obtained when predicting approximately 500-700 outputs. In addition, new methods for constraint implementation within the new RBN design are introduced. Moreover, the new RBN design and its associated parameters are used as a tool for simulated task analysis. This work initiates the idea that output weights (W) can be used to determine the most critical basis functions that cause the greatest reduction in the network test error. Then, the critical basis functions can specify the most significant training cases that are responsible for the proper performance achieved by the network. The inputs with the most change in value can be extracted from the basis function centers (U) in order to determine the dominant inputs. The outputs with the most change in value and their corresponding key body degrees-of-freedom for a motion task can also be specified using the training cases that are used to create the network's basis functions.
Loutos, Gerasimos. "Development of prediction schemes for real-time bus arrival information." Thesis, KTH, Transportvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145939.
Full textBernhardsson, Viktor, and Rasmus Ringdahl. "Real time highway traffic prediction based on dynamic demand modeling." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-112094.
Full textTong, Xianqiao. "Real-time Prediction of Dynamic Systems Based on Computer Modeling." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/47361.
Full textPh. D.
Ahmed, Safayet N. "Adaptive CPU-budget allocation for soft-real-time applications." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52215.
Full textMoshgbar, Mojgan. "Prediction and real-time compensation of liner wear in cone crushers." Thesis, Loughborough University, 1996. https://dspace.lboro.ac.uk/2134/27362.
Full textJewell, Chris. "Real-time inference and risk-prediction for notifable disease of animals." Thesis, Lancaster University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.536005.
Full textQaddoum, Kefaya. "Intelligent real-time decision support systems for tomato yield prediction management." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/58333/.
Full textTeal, Paul D., and p. teal@irl cri nz. "Real Time Characterisation of the Mobile Multipath Channel." The Australian National University. Research School of Information Sciences and Engineering, 2002. http://thesis.anu.edu.au./public/adt-ANU20020722.085502.
Full textKolhatkar, Dhanvin. "Real-Time Instance and Semantic Segmentation Using Deep Learning." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40616.
Full textLiu, Jia. "Rainfall-runoff modelling and numerical weather prediction for real-time flood forecasting." Thesis, University of Bristol, 2011. http://hdl.handle.net/1983/87375e5e-4186-4707-b7c6-465617dc1ac1.
Full textMa, Rui. "Solid oxide fuel cell modeling and lifetime prediction for real-time simulations." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCA018.
Full textThis thesis first presents a multi-physical modeling of a 2D reversible tubular solid oxide cell. The developed model can represent both a solid oxide electrolysis cell (SOEC) and solid oxide fuel cell (SOFC) operations. By taking into account of the electrochemical, fluidic and thermal physical phenomena, the presented model can accurately describe the multi-physical effects inside a cell for both fuel cell and electrolysis cell operation under entire working range of cell current and temperature. In addition, an iterative solver is proposed which is used to solve the 2D distribution of physical quantities along the tubular cell. The reversible solid oxide cell model is then validated experimentally in both SOEC and SOFC configurations under different species partial pressures, operating temperatures and current densities conditions. Meanwhile, a control-oriented syngas fuel cell model includes both hydrogen and carbon monoxide co-oxidation phenomena are also proposed. The developed syngas model is validated experimentally under different operating conditions regarding different reaction temperatures, species partial pressures and entire working range of current densities. The developed model can be used in embedded applications like real-time simulation, which can help to design and test the control and online diagnostic strategy for fuel cell power generation system in the industrial applications.Real-time simulation is important for the fuel cell online diagnostics and hardware-in-the-loop (HIL) tests before industrial applications. However, it is hard to implement real-time multi-dimensional, multi-physical fuel cell models due to the model numerical stiffness issues. Thus, the numerical stiffness of the tubular solid oxide fuel cell (SOFC) real-time model is analyzed to identify the perturbation ranges related to the fuel cell electrochemical, fluidic and thermal domains. Some of the commonly used ordinary differential equation (ODE) solvers are then tested for the real-time simulation purpose. At last, the novel stiff ODE solver is proposed to improve the stability and reduce the multi-dimensional real-time fuel cell model execution time. To verify the proposed model and the ODE solver, real-time simulation experiments are carried out in a common embedded real-time platform. The experimental results show that the execution speed satisfies the requirement of real-time simulation. The solver stability under strong stiffness and the high model accuracy are also validated.Fuel cell are vulnerable to the impurities of hydrogen and operating conditions, which could cause the degradation of output performance over time during operation. Thus, the prediction of the performance degradation draws attention lately and is critical for the reliability of the fuel cell system. Thus, an innovative degradation prediction method using Grid Long Short-Term Memory (G-LSTM) recurrent neutral network (RNN) is proposed. LSTM can effectively avoid the gradient exploding and vanishing problem compared with conventional RNN architecture, which makes it suitable for the prediction of long time period. By paralleling and combining the LSTM cells, G-LSTM architecture can further optimize the prediction accuracy of the PEMFC performance degradation. The proposed prediction model is experimentally validated by three different types of PEMFC: 1.2 kW NEXA Ballard fuel cells, 1 kW Proton Motor PM200 fuel cells and 25 kW Proton Motor PM200 fuel cells. The results indicate that the proposed G-LSTM network can predict the fuel cell degradation in a precise way. The proposed G-LSTM deep learning approach can be efficiently applied to predict and optimize the lifetime of fuel cell in transportation applications
Wu, Wenda. "Machine Learning Based Fault Prediction for Real-time Scheduling on Shop Floor." Thesis, KTH, Industriell produktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-245221.
Full textNu för tiden, schemaläggning på en affärsplan är endast inriktad på tillgången på resurser, där de potentiella felen inte kan förutses. En stor dataanalysbaserad felprediktion föreslogs att tillämpas vid schemaläggning, vilket kräver beslutsfattande i realtid. För att välja en riktig maskininlärningsalgoritm för realtidsplanering, föreslår det-ta papper först en datagenereringsmetod när det gäller mönsterkom-plexitet och skala. Baserat på dessa datasatser utbildas tio allmänt an-vända maskininlärningsalgoritmer, där parametrarna justeras för att uppnå hög noggrannhet. Testresultaten inklusive tre index inklusive träningstid, testtid och prediktionsnoggrannhet används för att utvär-dera algoritmerna. Resultaten av testen visar att typiska maskininlärningsmetoder som Naive Bayes-klassificerare och SVM är bra nog med snabb träning med hög noggrannhet när de arbetar med data med enkel struktur och liten skala. När man hanterar komplexa data i stor skala, överträffar djupa inlärningsmetoder som CNN och DBN alla andra metoder.
Kommaraju, Mallik. "Predictor development for controlling real-time applications over the Internet." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4813.
Full textHan, Mei. "Studies of Dynamic Bandwidth Allocation for Real-Time VBR Video Applications." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/32027.
Full textMaster of Science
Roach, Jeffrey Wayne. "Predicting Realistic Standing Postures in a Real-Time Environment." NSUWorks, 2013. http://nsuworks.nova.edu/gscis_etd/291.
Full textFan, Zheyu Jerry. "Kalman Filter Based Approach : Real-time Control-based Human Motion Prediction in Teleoperation." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189210.
Full textDetta arbete fokuserar på att undersöka prestandan hos två Kalman Filter Algoritmer, nämligen Linear Kalman Filter och Extended Kalman Filter som används i realtids uppskattningar av kontrollbaserad mänsklig rörelse i teleoperationen. Dessa Kalman Filter Algoritmer har används i stor utsträckning forskningsområden i rörelsespårning och GPS-navigering. Emellertid är potentialen i uppskattning av mänsklig rörelse genom att utnyttja denna algoritm sällan nämnas. Genom att kombinera med det kända problemet – fördröjningsproblem i dagens teleoperation tjänster beslutar författaren att bygga en prototyp av en enkel teleoperation modell vilket är baserad på Kalman Filter algoritmen i syftet att eliminera icke-synkronisering mellan användarens inmatningssignaler och visuella information, där alla data överfördes via nätverket. I den första delen av avhandlingen appliceras både Kalman Filter Algoritmer på prototypen för att uppskatta rörelsen av robotarmen baserat på användarens rörelse som anbringas på en haptik enhet. Jämförelserna i prestandan bland de Kalman Filter Algoritmerna har också fokuserats. I den andra delen fokuserar avhandlingen på att optimera uppskattningar av rörelsen som baserat på resultaten av Kalman-filtrering med hjälp av en utjämningsalgoritm. Den sista delen av avhandlingen undersökes begräsning av prototypen, som till exempel hur mycket fördröjningar accepteras och hur snabbt den haptik enheten kan vara, för att kunna erhålla skäliga uppskattningar med acceptabel felfrekvens. Resultaten visar att den Extended Kalman Filter har bättre prestandan i rörelse uppskattningarna än den Linear Kalman Filter under experimenten. Det icke-synkroniseringsproblemet har förbättrats genom att tillämpa de Kalman Filter Algoritmerna på både statliga och värderingsmodeller när latensen är inställd på under 200 millisekunder. Den extra utjämningsalgoritmen ökar ytterligare noggrannheten. Denna algoritm löser också det skakande problem hos de visuella bilder på robotarmen som orsakas av den vågiga egenskapen hos Kalman Filter Algoritmen. Dessutom effektivt synkroniserar den optimeringsmetoden tidpunkten när robotarmen berör objekten i uppskattningarna. Den metod som används i denna forskning kan vara en god referens för framtida undersökningar i kontrollbaserad rörelse- spåning och uppskattning.
Shahidi, Zandi Ali. "Scalp EEG quantitative analysis : automated real-time detection and prediction of epileptic seizures." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42748.
Full textGwatiringa, Tinashe G. "Sea state estimation from inertial platform data for real-time ocean wave prediction." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29496.
Full textDarbyshire, Karl James. "Real-time pump scheduling through model identification, utilising neural and hybrid prediction techniques." Thesis, Leeds Beckett University, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.665992.
Full textJansson, Daniel, and Rasmus Blomstrand. "REAL-TIME PREDICTION OF SHIMS DIMENSIONS IN POWER TRANSFER UNITS USING MACHINE LEARNING." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-45615.
Full textWei, Zhengzhe. "H.264 Baseline Real-time High Definition Encoder on CELL." Thesis, Linköping University, Computer Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-53678.
Full textIn this thesis a H.264 baseline high definition encoder is implemented on CELL processor. The target video sequence is YUV420 1080p at 30 frames per second in our encoder. To meet real-time requirements, a system architecture which reduces DMA requests is designed for large memory accessing. Several key computing kernels: Intra frame encoding, motion estimation searching and entropy coding are designed and ported to CELL processor units. A main challenge is to find a good tradeoff between DMA latency and processing time. The limited 256K bytes on-chip memory of SPE has to be organized efficiently in SIMD way. CAVLC is performed in non-real-time on the PPE.
The experimental results show that our encoder is able to encode I frame in high quality and encode common 1080p video sequences in real-time. With the using of five SPEs and 63KB executable code size, 20.72M cycles are needed to encode one P frame partitions for one SPE. The average PSNR of P frames increases a maximum of 1.52%. In the case of fast speed video sequence, 64x64 search range gets better frame qualities than 16x16 search range and increases only less than two times computing cycles of 16x16. Our results also demonstrate that more potential power of the CELL processor can be utilized in multimedia computing.
The H.264 main profile will be implemented in future phases of this encoder project. Since the platform we use is IBM Full-System Simulator, DMA performance in a real CELL processor is an interesting issue. Real-time entropy coding is another challenge to CELL.
Ghafir, Ibrahim. "A machine-learning-based system for real-time advanced persistent threat detection and prediction." Thesis, Manchester Metropolitan University, 2017. http://e-space.mmu.ac.uk/618896/.
Full textLauer, Michelle(Michelle F. ). "Real-time household energy prediction : approaches and applications for a blockchain-backed smart grid." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/121676.
Full textThesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 91-94).
In the current era of Internet of Things (IoT) devices, household solar panels, and increasingly aordable local energy storage, energy grid systems are facing a new set of challenges that they were not originally designed to support. Energy systems of the near future must be capable of supporting these new technologies, but new technology can also be leveraged to improve reliability and eciency overall. A major source of potential improvements comes from the increase of connected devices that are capable of dynamically adjusting their behavior, and offer new data that can be used for optimization and prediction. Energy predictions are used today at the bulk power system level to ensure demand is met through appropriate resource allocation. As energy systems become more responsive, prediction will be important at more granular system levels and timescales.
Enabled by the rise in available data, existing research has shown some machine learning models to be superior to traditional statistical models in predicting long-term aggregate usage. However, these models tend to be computationally expensive; if machine learning prediction models are to be used at short timescales and performed close to the end nodes, there is a need for more ecient models. Additionally, most machine learning models today do not take advantage of the known and studied properties of the underlying energy data. This thesis explores the circumstances under which machine learning can be used to make predictions more accurately than existing methods, and how machine learning and statistical methods can serve to complement each other (specically for short timescales at the household level).
We nd that basic machine learning models outperform other baseline and statistical models by using energy usage trends observed from statistical methods to better engineer the input features. For the increasingly distributed energy systems that these predictive models aim to support, the distributed nature of blockchain technology has been proposed as a good match for managing such systems. As an example of one possible distributed management implementation, this thesis presents a novel blockchain-enabled architecture that provides privacy for users, information security through improved household-level prediction, and takes into consideration the security vulnerabilities and computational constraints of the participants.
by Michelle Lauer.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
Adams, Kevin Page. "An Approach to Real Time Adaptive Decision Making in Dynamic Distributed Systems." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/25943.
Full textPh. D.
Qin, Xiao. "Traffic flow modeling with real-time data for on-line network traffic estimation and prediction." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3628.
Full textThesis research directed by: Civil Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Park, YongWoo. "Observation of phytoplankton multiplication processes and real-time prediction of its blooming in Tanabe Bay." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/148523.
Full textSuryo, Eko Andi. "Real - time prediction of rainfall induced instability of residual soil slopes associated with deep cracks." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/63775/1/Eko_Andi_Suryo_Thesis.pdf.
Full textDilmore, Jeremy Harvey. "IMPLEMENTATION STRATEGIES FOR REAL-TIME TRAFFIC SAFETY IMPROVEMENTS ON URBAN FREEWAYS." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3254.
Full textM.S.C.E.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Civil Engineering
Baroya, Sydney. "Real-time Body Tracking and Projection Mapping in the Interactive Arts." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2250.
Full textZhang, Yizhou. "Real Time Crowding Information (RTCI) Provision : Impacts and Proposed Technical Solution." Thesis, KTH, Industriell ekologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174113.
Full textRoshandel, Saman. "Impact of real-time traffic characteristics on freeway crash occurrence : systematic review and meta-analysis." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/79151/2/Saman_Roshandel_Thesis.pdf.
Full textOluyemi, Gbenga Folorunso. "Intelligent grain size profiling using neural network and application to sanding potential prediction in real time." Thesis, Robert Gordon University, 2007. http://hdl.handle.net/10059/1258.
Full textTom, Tracey Hiroto Alena. "Development of Wave Prediction and Virtual Buoy Systems." 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120845.
Full textBerrebi, Simon Jonas Youna. "A real-time bus dispatching policy to minimize headway variance." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51899.
Full textDevarasetty, Ravi Kiran. "Heuristic Algorithms for Adaptive Resource Management of Periodic Tasks in Soft Real-Time Distributed Systems." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/31219.
Full textMaster of Science
Jiang, Yu. "Inference and prediction in a multiple structural break model of economic time series." Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/244.
Full text王雅芬. "A Real-time Vehicle Speed Prediction Method." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/61350853356938522013.
Full text國立交通大學
資訊管理研究所
100
For the past few years, with the advance of technology and economic growth, the qualities of traditoional transport systems have improved significantly. Intelligent Transportation System (ITS) has become more and more popular. So far, there are two ways to collect real-time traffic information: (1) stationary Vehicle Detectors (VD) and (2) Global Position System (GPS)-equipped probe cars reporting. However, VD devices need large amounts of money to build and maintain. Therefore, we propose the linear regression model to infer the equation between vehicle speed and traffic flow. The traffic flow can be estimated from the speed which is obtained from GPS-equipped probe cars. For vehicle speed prediction, we propose the regression based methods to predict the future vehicle speed by using the real-time vehicle speed. In experiments, the future traffic information estimation results show that the accuracies of vehicle speed prediction is 98.24%. The Speed Error Ratio and Flow Error Ratio of linear regression model are 4.46% and 33.75% respectively. The estimated speed and traffic flow by using linear regression model is better than by using any other models. Therefore, the linear regression model can be used to estimate traffic flow for ITS. This approach is feasible to estimate the future vehicle speed and the real-time traffic flow for ITS improvement.
"Mason: Real-time NBA Matches Outcome Prediction." Master's thesis, 2017. http://hdl.handle.net/2286/R.I.43914.
Full textDissertation/Thesis
Masters Thesis Computer Science 2017
Sun, Hongyu. "Adaptive short-term traffic prediction in real-time application." 2005. http://catalog.hathitrust.org/api/volumes/oclc/62409118.html.
Full textLeitão, Bruno Miguel Direito Pereira. "Development of classification methods for real-time seizure prediction." Doctoral thesis, 2013. http://hdl.handle.net/10316/23583.
Full textIn the last decades, the scientific community has made enormous efforts to understand the basic mechanisms underlying the generation of epileptic seizures. The analysis of the pre-ictal dynamics among different brain regions has been shown as an important source of information towards the understanding of the spatio-temporal mechanisms. This study, partially a contribution to the EPILEPSIAE project, aims the prediction of unforeseeable and uncontrollable epileptic seizures. Ultimately, the successful development of seizure prediction algorithms represents a fundamental step towards the creation of closed-loop intervention systems, which would improve the quality of life of epileptic patients. The first part of this study aims the development of a patient-specific seizure prediction algorithm based on machine learning with high sensitivity and low false positives rate. The dynamical changes of the brain activity are analyzed using a high dimensional feature set obtained from both scalp and intracranial multichannel electroencephalogram (EEG). The features represent low complexity measures, implementable in real-time scenarios and the classification was performed using cost sensitive support vector machines (SVM). The proposed method was tested in 216 patients of the multicenter EPILEPSIAE database and presented statistical significant results for a small group of patients. We have also analyzed different optimization strategies such as feature selection, feature reduction (classical multidimensional scaling) and post-processing (moving average filter and Kalman filter) in order to improve the results. We addressed the characterization of the EEG spatio-temporal patterns and the classification of specific brain states. The method proposed, based on the segmentation of topographic maps and on a statistical framework (hidden Markov models), shows promising results for the identification of a pre-ictal stage. Lastly, we present a novel approach to characterize the pre-ictal period using multi-way models. Using the PARAFAC model, the EEG data is decomposed in rank-one tensors. It is hypothesized that one of the components represents variations related to the pre-ictal period. Using the high-order data representation, we have also proposed a method to detect the variability of the data using incremental tensor analysis. The conclusions of this study sustain the hypothesis that epileptic seizures (of a group of patient) are predictable. Concerning the methodologies proposed to analyze the space-time-frequency domain, we hope that the suggested approaches point towards new directions in the field of research of seizure prediction.
Nas últimas décadas, a comunidade científica tem vindo a desenvolver grandes esforços no sentido de compreender os mecanismos básicos responsáveis pelo desencadeamento de crises epilépticas. A análise da dinâmica entre diferentes regiões do cérebro humano mostrou que esta pode ser uma importante fonte de informação para explicar a génese das crises. Enquadrado no projeto europeu EPILEPSIAE, este estudo visa o desenvolvimento de um algoritmo de previsão de crises epilépticas cujo sucesso representaria um passo fundamental na criação de sistemas de intervenção malha fechada e uma melhoria da qualidade de vida dos doentes com epilepsia. O trabalho de investigação permitiu, numa primeira fase, o desenvolvimento de um algoritmo específico para cada paciente baseado em métodos de aprendizagem computacional com elevada sensibilidade e baixa taxa de falsos alarmes. As variações da dinâmica cerebral de cada paciente são analisadas através de um conjunto de características calculadas através de electroencefalografia (EEG) multicanal de escalpe ou intracraniano. Estas características representam medidas de relativa pouca complexidade, facilmente implementáveis em temporeal. A classificação é realizada através de máquinas de vectores de suporte com custo assimétrico. A metodologia proposta foi testada num conjunto de 216 pacientes pertencentes a diferentes centros de epilepsia (da base de dados europeia EPILEPSIAE) apresentando resultados de previsão estatisticamente significativos para um reduzido número de pacientes. Posteriormente analisamos o impacto de métodos de seleção de características, redução de características e estratégias de regularização da saída dos classificadores (aplicando os filtros de média móvel e de Kalman) tendo em vista a melhoria dos resultados obtidos. A caracterização dos padrões espaço-temporais do sinal EEG e a classificação dos estados cerebrais relacionados com a epilepsia foi um dos procedimentos metodológicos usados. Baseado na segmentação dos mapas topográficos e no modelo estatístico modelo escondido de Markov, o método proposto demonstra resultados promissores na identificação e caracterização do estado pré-ictal. Por fim, apresentamos uma nova metodologia para a caracterização do período pré-ictal usando tensores de 3ª ordem. Usando o modelo de decomposição PARAFAC, as componentes espaço, tempo e frequência do sinal EEG são decompostas em bases de vectores no espaço tridimensional. Hipotetizamos que uma das bases tridimensionais resultantes representa as variações relacionadas com os processos pré-ictais. Usando a representação tridimensional dos dados (espaço, tempo e características do sinal EEG), propomos um método que permite identificar variações na estrutura de dados. As conclusões deste estudo sustentam, a nosso ver, a hipótese de que as crises epilépticas (de um determinado número) de pacientes com epilepsia podem ser previstas. Relativamente às metodologias de análise espaço-temporais, expectamos que a abordagens metodológica apresentada aponte para novas direções no estudo de previsão de crises epiléticas.