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 227 for “"Data Reduction"”.
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Data Reduction in Smart Grid
… electric grid has led to tremendous growth in data generated from the installed sensors. With this huge amount of data, the electric grid faces a big data problem. Therefore, it is necessary to implement a data reduction technique that would not only curtail the exponential data growth, but …
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An optimized data reduction technique in photogrammetry
… alternative to existing photogrammetric reduction schemes for non-metric photography. While DLT resolved the problems of non-metric photography not having camera calibration information or fiducial marks for transformation of measured comparator coordinates to image coordinates, it was …
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Signal Modeling and Data Reduction for Wireless Brain-Machine Interfaces
… designing computationally efficient and reliable data reduction techniques. The design and validation of such techniques requires the presence of well defined test data, where the true information content is known a priori. This thesis deals with both the modeling of the neural signal to provide …
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Model and Data Reduction for Control, Identification and Compressed Sensing
… arise in optimal control, filtering and model reduction. We present a projection based algorithm utilizing proper orthogonal decomposition, which is demonstrated to produce highly accurate solutions at low rank. The method is parallelizable, easy to implement for practitioners, and is a first …
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Feature extraction and data reduction for hyperspectral remote sensing Earth observation
… platforms has made possible acquiring large data sets, with high potential in analytical tasks but at the cost of advanced signal processing. In this thesis, effective/efficient feature extraction methods are proposed. Initially, contributions are introduced for efficient computation of the …
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Appletite : data reduction for the wireless platform : a restaurant recommendation system
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2001.
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Microwave data reduction technique for calculation of solid propellant burning rates
… method for reducing the microwave data is reviewed and an improved data reduction technique is introduced. The improved microwave modeling technique is analyzed using simulated data to determine the accuracy of the burning-rate calculations and the sensitivity of the burning-rate …
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An interactive data reduction system for real-time millimeter wave experiments
The nature of data acquisition in a realtime millimeter wave experiment is discussed. Goals for a data reduction system are presented and the available processing environment analyzed. Some currently popular software design methodologies are then reviewed and selectively applied to a complete …
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Data reduction and knot removal for non-uniform B-spline surfaces
… format can contain very large quantities of data. The computing power required by a CAD system for visualization and analysis is directly influenced by these large amounts of data. Accordingly, a method for reducing the amount of data in a geometric model while maintaining accuracy is needed …
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Data Reduction for Diverse Optical Observers through Fundamental Dynamic and Geometric Analysis
… While these techniques are often successful at data reduction for a particular mission, they rarely extend to sensors in different operating modes. Such specialized techniques therefore reduce the number of sensors able to contribute imagery. By approaching this problem with analysis of the …
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Contributions to Data Reduction and Statistical Model of Data with Complex Structures
… technology and information explosion, the data of interest often have complex structures, with the large size and dimensions in the form of continuous or discrete features. There is an emerging need for data reduction, efficient modeling, and model inference. For example, data can contain …
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Development of a data reduction method for a high frequency angle probe
A data reduction method has been developed and tested for a high frequency angle probe. The angle probe is designed for unsteady aerodynamic measurements in transonic cryogenic wind tunnels. The probe measures time-resolved total pressure, static pressure, angle of attack, and yaw angle from …
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Improved wind tunnel testing and data reduction methods using a magnetic suspension system
<p class="MsoNormal">Improved techniques and data reduction methods for aerodynamic force measurements are proposed and tested. The model levitation and force measurements are provided by the magnetic suspension and balance system of Southampton University. Quasi-static and dynamic forces and …
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Data Reduction Procedure for an Experimental Method of Measuring the Velocity-Coupled Response Function of Solid Propellants
… from experimentally measured pressure data. The proposed velocity-coupled response function measurement apparatus consists of an end-burner combustor where the propellant sample is oscillated in a direction normal to the flow in the presence of a standing acoustic wave within the …
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Improving the Performance of a Hybrid Classification Method Using a Parallel Algorithm and a Novel Data Reduction Technique
… guided spectral class rejection) and a novel data reduction technique that can be used in conjuction with pIGSCR (parallel IGSCR). The parallel algorithm is motivated by a demonstrated need for more computing power driven by the increasing size of remote sensing datasets due to higher …
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Investigations of biological interactions by hydrogen deuterium exchange Fourier transform ion cyclotron mass spectrometry: novel methods, automated analysis and data reduction
… by negative mode gas phase H/D exchange. Data presented describes the reactivity of these oligonucleotides and correlates reactivity to functional moieties of the model compound. The results of the study are subjected to center of mass analysis, a technique that uses the high mass …
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An exploratory study using the predicate-argument structure to develop methodology for measuring semantic similarity of radiology sentences
… of natural language processing with the goal of data reduction of unstructured free text. Pertinent to IE is an annotated corpus that frames how IE methods should create a logical expression necessary for processing meaning of text. Most annotation approaches seek to maximize meaning and …
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Visual exploration of multivariate data in breast cancer by dimensional reduction
… of computational techniques based on dimensional data reduction for the visual exploration of DCE-MRI and DNA microarray data in breast cancer. Algorithms for dimensional data reduction aim to compute low-dimensional projections of high-dimensional data while best preserving the data topology. In …
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A Selection Scheme for Non-Metric Close-Range Photogrammetric Systems
… photogrammetric project, various combinations of data acquisition and data reduction methods yield results that meet different levels of accuracy requirement. It is the responsibility of the photogrammetrist to seek out the best solution according to the goals and objectives of the project at …
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