Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 143 for “"Kriging"”.
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Proper orthogonal decomposition & kriging strategies for design
… and<br/>updated in regions of interest.<br/><br/>Kriging is a particularly popular method of constructing a surrogate model due to its ability to accurately represent complicated responses whilst providing an error estimate of the predictor. However, it can be prohibitively expensive to construct …
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Investigating 'optimal' kriging variance estimation :analytic and bootstrap estimators
Kriging is a widely used group of techniques for predicting unobserved responses at specified locations using a set of observations obtained from known locations. Kriging predictors are best linear unbiased predictors (BLUPs) and the precision of predictions obtained from them are assessed by the …
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Network Kriging - Predicting the Attributes of Nodes in a Network
… use the geostatistical prediction method called Kriging that is modified to preform in a network; which we call Network Kriging.This thesis gives the background knowledge necessary to understand the techniques, shows the results of Network Kriging and compares results to those using the K-Nearest …
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A kriging-enhanced aeroelastic stability prediction tool for radial turbomachinery using piston theory
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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Vibration and Buckling Analysis of Unitized Structure Using Meshfree Method and Kriging Model
… to generate the sample points and combination of Kriging (a surrogate model) and Genetic Algorithms is used for design of curvilinearly stiffened plate. The meshfree and kriging results and CPU time were compared with those obtained using EBF3PanelOpt.
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Height change detection in Antarcita using satellite altimetry data and Kriging / Kalman filtering techniques
… change in Antarctica. The first technique, block kriging, uses all available data to build a statistical model of the elevation field. Results of height rate of changes dh/dt ill Antarctica for the years 1995-2001 produced using block kriging and cross-over analysis are compared. In the Amery Ice …
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Design and optimization of a high thermal flux research reactor via Kriging-based algorithm
… the search for the optimum geometry was sought. Kriging has been chosen to predict the values of eigenvalue and thermal flux at untested geometric parameters. Because kriging treats all measurements as the sum of a global deterministic function and a stochastic departure from that function, …
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The effect of locational uncertainty in geostatistics
… variogram, and optimal spatial prediction (aka, kriging). We show that the basic methodology of kriging adjusted for locational error is the same as kriging without locational error;We also develop a hierarchical Bayesian model to incorporate locational uncertainty into spatial data analysis. We …
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Modeling forest stand structure using geostatistics, geographic information systems, and remote sensing
… methods of interpolation (ordinary kriging, universal kriging with first-degree trend surface, universal kriging with second-degree trend surface, cokriging, and disjunctive kriging) with three traditional estimation methods (polygonal mapping, inverse distance weighting, and inverse …
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Practical algorithms for image compression and surface estimation
… for surface estimation that incorporates kriging and parametric cubic splines. Two of the image compression algorithms are innovative extensions of the Run Length Encoding image compression algorithm and the third is an image compression technique based on kriging. In general the modified …
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Accelerated optimisation methods for low-carbon building design
… of the performance of optimisation using Kriging surrogate models on low-carbon building design problems. Their performance is compared with established genetic algorithms operating without a surrogate on a range of different types of building-design problems. The advantages and …
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Worlds Collide through Gaussian Processes: Statistics, Geoscience and Mathematical Programming
… use a subtly different technique known as kriging. I shall highlight key similarities and differences between GPs and kriging through the use of large scale gold mining data. Most importantly GPs are largely hands-off, automatically learning from the data whereas kriging requires an expert …
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Optimizing peak gust and maximum sustained wind speed estimates from mid-latitude wave cyclones
… on an anisotropic (directionally-dependent) kriging interpolation methodology. Overall, wind speed magnitudes and high intensity locations were identified accurately for each storm. Directional trends and wind swaths were also consistently located in appropriate locations based on known storm …
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Multi-fidelity strategies for lean burn combustor design
… Surrogate modeling design strategies, including Kriging models, are currently being used to balance the challenges of accuracy and computational resource to accelerate the combustor design process. However, its feasibility still largely relies on the total number of design variables, objective …
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Topics in interpolation and smoothing of spatial data
… error, is defined and incorporated into the kriging equations. A number of measures have been proposed for kriging in the presence of trend, ranging from explicit modelling of a deterministic trend function to 'moving window' kriging, which assumes local stationarity as an approximation. The …
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A statistical investigation of ozone exposure assessment by direct and indirect measurement
… uses a spatial temporal statistical method, kriging, in conjunction with subject activity logs to estimate personal exposure to ozone. The personal ozone exposure to human subjects was monitored using Harvard passive samplers during August and September of 1997. Each subject logged their …
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