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 234 for “"Initialization"”.
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GIM: Guidance as Initialization Method
… (FCNs) and the introduction of guidance as an initialization method (GIM). Network initialization has been a meaningful and challenging topic in the field of machine learning (ML) for a long time. Many initialization methods exist, ranging from data-independent to data-dependent approaches. …
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On initialization of primitive equation models
Thesis. 1975. M.S.--Massachusetts Institute of Technology. Dept. of Meteorology.
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Towards a Digital Engineering Initialization Framework
… The proposed Digital Engineering Ecosystem Initialization Framework aims to provide a tailorable framework for establishing a digital engineering environment, particularly applicable to small to medium sized government engineering contracting organizations.
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Improving binary optimization algorithms using genuine uniform initialization
… This thesis investigates the critical aspect of initialization in population-based metaheuristic algorithms. This research studies Uniform Covering (UC) binary initialization method as the substitute for the Bit-string Uniform (BU) binary population initialization method for population …
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Time-domain based steady-state initialization for the EMTP
The existing steady-state initialization algorithm in the electromagnetic transients program EMTP is based on a frequency-domain admittance method. This yields a simple, efficient solution for linear, lumped element networks. However, the basic algorithm cannot be easily extended to handle …
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Approximation Methods for the Consistent Initialization of Differential-Algebraic Equations
The algebraic constraints in a system of differential-algebraic equations (DAEs) impose a consistency requirement on the initial values that can be difficult to satisfy. In this thesis the consistency requirement is characterized by a system of equations. An approximation method is introduced for …
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Fuzzy Membership Function Initial Values: Comparing Initialization Methods That Expedite Convergence
… provide the boundaries for the fuzzy data. The initialization of these membership function values should allow the data to converge to a stable membership value in the shortest time possible. The paper compares three initialization methods, Random, Midpoint and Random Proportional, to determine …
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Investigation of applying normal mode initialization method to planetary stationary wave disturbances
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1992.
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Implementation of a testing and initialization algorithm for the generalized tree structure
… the testing algorithm and in order to simplify initialization. The testing algorithm is modified so as to test this modified structure. In addition, after testing is complete, two means of reinitialization of the sequential trees are discussed.
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An Arithmetic-Based Deterministic Centroid Initialization Method for the k-Means Clustering Algorithm
… for initializing these centroids, and poor initialization can lead to increased numbers of required clustering iterations to reach convergence, and a greater overall runtime. This research proposes a simple, arithmetic-based deterministic centroid initialization method which is much faster …
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Quantum Information Processing with Color Center Qubits: Theory of Initialization and Robust Control
Quantum information technologies include secure quantum communications and ultra precise quantum sensing that are significantly more efficient than their classical counterparts. To enable such technologies, we need a scalable quantum platform in which qubits are con trollable. Color centers provide …
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Learning Legged Locomotion by Physics-based Initialization: Motion Imitation from Model-Based Optimal Control
The development of legged robots capable of navigating in and interacting with the world is quickly advancing as new methods and techniques for sensing, decisionmaking, and controls expand the capabilities of state-of-the-art systems. Model-based methods, empowered by greater computing capacity and …
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Modeling of Polar Cap Ionospheric Patches and Attendant Plasma Instabilities: Initialization from Data and Parametric Analysis
<p>There is a robust history of theoretical work on ionospheric plasma patches and their attendant plasma fluid irregularities, particularly within the polar cap region. Within this region though, plasma theory does not always yield tractable problems with succinct analytic solutions that are …
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Application of the Weather Research and Forecasting (WRF) Model to Simulate a Squall Line: Implications of Choosing Parameterization Scheme Combinations and Model Initialization Data Sets
… simulations to analyze the affect different initialization data sets have with regards to model output. Data sets used in these simulations were the Final Operational Analysis global data, North American Regional Reanalysis (3 and 6 hour) and the North American Mesoscale Model at 1, 3 and 6 …
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Nonnegative Matrix Factorization and Document Classification
… on a variety of inner dimensions to see how my initialization compares to random initialization across an assortment of inner dimensions. The document classification is accomplished by using Non-negative Matrix Factorization and a Support Vector Machine. Several of the well known algorithms call …
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The Lottery Ticket Hypothesis: On Sparse, Trainable Neural Networks
… They rely on a combination of structure and initialization: if either is modified (by reinitializing the network or shuffling which weights are pruned in each layer), accuracy drops. In small-scale settings, I show that these subnetworks exist from initialization; in large-scale settings, I …
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The Role of Preexisting Airmass Boundaries in the Maintenance and Rotation of Deep Convection in a High -Cape, Low -Shear Environment
… cloud model with a horizontally heterogeneous initialization that included the dominant preexisting airmass boundaries of the 27 May 1997 event. With a localized initialization and no preexisting boundaries, the simulated storm was short-lived and therefore consistent with the high-CAPE, …
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Control of spacecraft in proximity orbits
… to spacecraft dynamics modeling, orbit initialization procedures, and failsafe trajectory design that improve the feasibility and chances of success for future proximity operations. This includes the derivation of a new set of relative linearized orbital dynamics incorporating the …
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Approximate signal reconstruction from partial information
… when the observed image is used as the initialization vector. When a different initialization vector is used, the POCS reconstruction performs considerably better. Two initialization vectors are proposed; the observed signal plus white noise and the observed signal plus a constant. The …
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Wide-area egomotion from omnidirectional video and coarse 3D structure
… can be split into two distinct problems: an initialization phase and a maintenance phase. In the initialization phase, the system determines the camera pose with no other information than a search region provided by the user (building, floor, area, room). This step is computationally …
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