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.
Results
Showing 1 to 20 of 29 for “"Reweighting"”.
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Toward accurate free energy calculations in biomolecular simulation: advances in Markov model reweighting and expanded ensemble method
The rational design of stable, preorganized peptides/ligands demands precise atomistic insights into their folded and unfolded conformational ensembles, which are often challenging to obtain from simulations alone due to timescale limitations and force field inaccuracies. This dissertation advances …
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Monte Carlo Methods: Application to Hydrogen Gas and Hard Spheres
… of the nuclear coordinates. Unlike the standard reweighting method, it remains stable as the energy difference increases.
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Measuring Wages and Inequality in South Africa Using Two Nationally Representative Data Series
… to account for item non-response using a bracket reweighting technique and the effects thereof. Secondly, I consider how estimates of the wage distribution differ between NIDS and PALMS when using the most comparable estimation methods available. Finally, I discuss what the data reveal about the …
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Measurement of the W boson mass with the ALEPH detector
… the invariant mass spectrum by a Monte Carlo reweighting method. Since the statistical and systematical uncertainties are at the same level, the latter are investigated in great detail. The presented W boson mass is then included in a preliminary world average which is used to extract a upper …
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Enhancing General Language Models for Biomedical Test Retrieval via Diversified Prior Knowledge
… to the query. The third, Diversity-based Score Reweighting, re-ranks these filtered documents by combining similarity and diversity scores, yielding more accurate results. Experimental tests on public biomedical IR datasets confirm that DPK-GLM significantly improves retrieval performance.
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Analysing and Mitigating Classification Bias for Text-based Foundation Models
… of these systems. However, by considering reweighting debiasing schemes, we demonstrate that both zero-resource and our proposed unsupervised reweighting debiasing yield more robust performance and reduce the sensitivity to the choice of label words. Further, we illustrate that when …
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P-VALUE BASED VARIABLE SELECTION FOR GENERALIZED LINEAR MODELS
… as homoskedastic linear regressions. After reweighting, the methods of Sarkar and Tang (2022) can be more directly applied to the generalized setting. We develop mathematical theory to prove that our contributions control the false discovery rate, and empirical evaluations demonstrate their …
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Efficient Monte Carlo Sampling of Lattice Field Theories
… are unreliable. To overcome this limitation, a reweighting method is developed and shown to be efficient and reliable for the models investigated. As a study of the probability distributions of the correlators in a simple model, the probability distributions of the two-point functions are …
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EFFECTS OF VESTIBULAR TRAINING ON POSTURAL CONTROL OF HEALTHY ADULTS
… method by positively influencing sensory reweighting mechanisms and vestibular reflexes. Our pilot study (n=33) has demonstrated significant postural stability improvement in the center of pressure (COP) medio-lateral standard deviation sway (ML Std) and multiscale entropy (MSE) sway …
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Atom-Based Computer Simulation Studies of Gas-to-Liquid Nucleation in Atmospherically Relevant Systems: Clarifying Discrepancies and Elucidating Mechanisms
… Monte Carlo, umbrella sampling, and histogram reweighting), to investigate the homogeneous vapor-to-liquid nucleation of various nucleating systems. We found out that these systems could nucleate through a variety of unique non-ideal mechanisms. Alongside existing experimental investigations, …
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Approaches to informing policy and planning in residential aged care: new knowledge from existing data
… are employed, using ratio estimation and survey reweighting when needed to adjust for study design. Analytical methods include logistic regression, generalised linear regression, point-process renewal methods, and proportional hazards models. Findings In recent decades, reports of the percentage …
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Small-x QCD Calculations with a Biased Ensemble
… in the MV model as well as JIMWLK, using reweighting techniques, which will allow me to calculate QCD observables with "biased ensembles". This technique will enable me to study rare functional configurations of the gluon distributions, that might have been selected for in, for example, …
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Monte Carlo methods: application to hydrogen gas and hard spheres
… of the nuclear coordinates. Unlike the standard reweighting method, it remains stable as the energy difference increases.
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Adaptation and learning in postural control
… withstand postural perturbations include sensory reweighting (i.e. change of the relative importance of the individual sensory systems), and modifications and building of internal models (automatic postural programs). Children (7-9 years of age) had a more efficient consolidation of experiences …
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Heavy Tails and Anomalous Diffusion in Human Online Dynamics
… the scaling characteristics and probability reweighting in risk attitude of online gamblers, which may help to interpret behaviors in economic systems. This work was supported by the US National Science Foundation through grants DMR-1205309 and DMR-1606814.
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Near-Optimal Learning in Sequential Games
… (Certified policy) A non-uniform and step-wise reweighting of historical policies to produce approximate Nash equilibrium policies (Chapter 4), 3. (Balanced exploration) Achieing optimal exploration of a game tree based on the size of the subtrees (Chapter 6), 4. (Log-partition function …
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Motion blur removal from photographs
… technique called iterative distribution reweighting (IDR) improves the visual realism of reconstructed images. Subject motion can also cause blur. Removing subject motion blur is especially challenging because the blur is often spatially variant. In this dissertation, we address a …
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Thermodynamic and hydrodynamic behaviour of interacting Fermi gases
… due to a sign problem. I will show how to apply reweighting techniques to generalise the algorithm to the imbalanced case, and present results for the critical temperature and other thermodynamic observables at the critical point, namely the chemical potential, the energy per particle and the …
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The Age-Related Effects of Visual Input on Multi-Sensory Weighting Process During Locomotion and Unexpected Slip Perturbations
… the results in this study suggest that the reweighting process increases proprioceptive gain while visual input is unavailable. These findings support the implication of future research in order to understand the potential hazards which could occur while walking and slipping with temporary …
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