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Showing 1 to 20 of 148 for “"Maximum Entropy"”.
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Maximum Entropy Method in Superspace Crystallography
… several aspects of the combination of the Maximum Entropy Method (MEM) for the reconstructions of the electron density with the superspace approach to the description of structures of aperiodic crystals. It is shown that the MEM in superspace provides a parameter-free reconstruction of the …
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An Analysis of DNF Maximum Entropy
This study focuses on the entropy of functions computed by monotone DNF formulas. Entropy, which is a measure of uncertainty, information, and choice, has been long studied in the field of mathematics and computer science. We will be considering spectral entropy and focus on the conjecture that for …
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Chinese word segmentation with a maximum entropy approach
In this thesis, we present a maximum entropy approach to Chinese word segmentation. Besides using features derived from gold-standard word-segmented training data, we also used an external dictionary and additional training corpora of different segmentation standards to further improve segmentation …
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Maximum entropy principle approach for water distribution network optimization
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Multiple channel maximum entropy spectral estimator and its application.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Maximum entropy on-policy reinforcement learning with monotonic policy improvement
This Thesis was approved for publication on 2023-07-21 at 16:57.
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Local maximum entropy approximation-based modelling of the canine heart
Local Maximum Entropy (LME) method is an approximation technique which has been known to have good approximation characteristics. This is due to its non-negative shape functions and the weak Kronecker delta property which allow the solutions to be continuous and smooth as compared to the Moving …
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Multichannel maximum entropy method of spectral analysis applied to offshore structures
The multichannel Maximum Entropy Method (MEM) of spectral analysis is developed and applied in the dynamic analysis of offshore structures. Two different algorithms are implemented and compared with the conventional Blackman-Tukey method. These are (1) a direct on the data or Burg method and (2) a …
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Modulation of Incommensurately Modulated Structures Studied by the Maximum Entropy Method
… modulated crystals are studied by the Maximum Entropy Method (MEM). This was done exemplarily on the compounds Rubidium tetrachlorozincate and Chromium pyrophosphate. To do so, the MEM derived (3+1)-dimensional superspace electron density was analysed to receive information on atomic …
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STRUCTURAL RELIABILITY ANALYSIS BASED ON MAXIMUM ENTROPY DISTRIBUTION WITH FRACTIONAL MOMENTS
… univariate density estimation method based on maximum entropy theory is proposed in this thesis to perform structural reliability analysis. The bias and variance error are smaller than the methods compared, and the model is flexible and applicable to many applications. Multivariate analysis is …
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Maximum Entropy Modeling of Indiana Bat (Myotis Sodalis) Maternity Roost Habitat
<p>Since 1967, the Indiana bat (Myotis sodalis) has been on the U.S. Endangered Species list due to disruption of hibernating bats in caves, summer habitat degradation, and more recently, the onset of White-nose Syndrome. The purpose of this study is to evaluate landscape variables associated with …
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Essays on Maximum Entropy Principle With Applications to Econometrics and Finance
… and portfolio selection problems using the maximum entropy (ME) principle. Since an entropy measure turns out to be a distance measure between two distributions, it can be used to estimate unknown density function. Entropy can be also interpreted as a measure of the degree of diversification …
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Non-maximum entropy polymer elasticity, viscoelasticity and the lattice Boltzmann method
Various models of viscoelasticity exist based on continuum mechanics. In this work a statistical mechanical approach is taken to derive a new isotropic, hyperelastic, viscoelastic, incompressible constitutive equation for polymers. The result has been achieved by generating a novel physics for the …
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Convex relaxation methods for graphical models : Lagrangian and maximum entropy approaches
… most probable configuration-also known as the maximum a posteriori (MAP) estimate-of all variables in a graphical model, conditioned on (possibly noisy) measurements of some variables. This general problem is intractable, so we consider a Lagrangian relaxation (LR) approach to obtain a …
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Accurate charge densities of amino acids and peptides by the Maximum Entropy Method
… and peptides have been reconstructed by the Maximum Entropy Method (MEM) to study chemical bonds. The MEM model-independently determines the most probable electron density, which simultaneously maximizes the information entropy and fits the X-ray diffraction data. The quality of the MEM …
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Maximum-entropy principle approach to the multiple travelling salesman problem and related problems
… an investigation into the applications of the maximum-entropy principle as a heuristic for the multiple travelling salesman problem. This is a computationally complex problem which requires special treatment by conventional optimization techniques. Specific focus is given to developing a …
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Maximum entropy quadratic model to characterize chemical non-equilibrium in re-entry flows
… exhibits significant curvature. By invoking the maximum entropy principle subject to a series of constraints, the logarithm of distribution function is reconstructed using quadratic functions in the internal energy space of the molecular species. The results of the numerical simulations for an …
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The application of Bayesian statistics and maximum entropy to Ion beam analysis techniques
… formalism, together with the concepts of maximum information entropy and multiresolution pixons, to various inverse problems in ion beam analysis; The results of this method of deconvoluting Rutherford Backscattering Spectrometry (RBS) and Proton Induced X-ray Emission (PIXE) spectra are …
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A mean-field method for driven diffusive systems based on maximum entropy principle
… nonequilibrium system. The application of maximum entropy principle to the system, which is in contact with a heat reservoir, leads to a minimization principle for the generalized Helmholtz free energy. At every level of approximation the latter is expressed in terms of the corresponding …
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