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Dissertations / Theses on the topic 'Rating estimation'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Dang, Huong Dieu. "Rating History, Time and The Dynamic Estimation of Rating Migration Hazard." Thesis, The University of Sydney, 2010. http://hdl.handle.net/2123/6397.

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This thesis employs survival analysis framework (Allison, 1984) and the Cox’s hazard model (Cox, 1972) to estimate the probability that a credit rating survives in its current grade at a certain forecast horizon. The Cox’s hazard model resolves some significant drawbacks of the conventional estimation approaches. It allows a rigorous testing of non-Markovian behaviours and time heterogeneity in rating dynamics. It accounts for the changes in risk factors over time, and features the time structure of probability survival estimates. The thesis estimates three stratified Cox’s hazard models, inc

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2

Dang, Huong Dieu. "Rating History, Time and The Dynamic Estimation of Rating Migration Hazard." University of Sydney, 2010. http://hdl.handle.net/2123/6397.

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Doctor of Philosophy(PhD)<br>This thesis employs survival analysis framework (Allison, 1984) and the Cox’s hazard model (Cox, 1972) to estimate the probability that a credit rating survives in its current grade at a certain forecast horizon. The Cox’s hazard model resolves some significant drawbacks of the conventional estimation approaches. It allows a rigorous testing of non-Markovian behaviours and time heterogeneity in rating dynamics. It accounts for the changes in risk factors over time, and features the time structure of probability survival estimates. The thesis estimates three stratif

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3

Grün, Bettina, Paul Hofmarcher, Kurt Hornik, Christoph Leitner, and Stefan Pichler. "Deriving Consensus Ratings of the Big Three Rating Agencies." Incisive Financial Publishing, 2013. http://epub.wu.ac.at/4052/1/consensus_Rev3.pdf.

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This paper introduces a model framework for dynamic credit rating processes. Our framework aggregates ordinal rating information stemming from a variety of rating sources. The dynamic of the consensus rating captures systematic as well as idiosyncratic changes. In addition, our framework allows to validate the different rating sources by analyzing the mean/variance structure of the rating deviations. In an empirical study for the iTraxx Europe companies rated by the big three external rating agencies we use Bayesian techniques to estimate the consensus ratings for these companies. The advant

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4

Michiorri, Andrea. "Power system real-time thermal rating estimation." Thesis, Durham University, 2010. http://etheses.dur.ac.uk/469/.

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This Thesis describes the development and testing of a real-time rating estimation algorithm developed at Durham University within the framework of the partially Government-funded research and development project “Active network management based on component thermal properties”, involving Durham University, ScottishPower EnergyNetworks, AREVA-T&D, PB Power and Imass. The concept of real time ratings is based on the observation that power system component current carrying capacity is strongly influenced by variable environmental parameters such as air temperature or wind speed. On the contrary,

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Grün, Bettina, Paul Hofmarcher, Kurt Hornik, Christoph Leitner, and Stefan Pichler. "Deriving Consensus Ratings of the Big Three Rating Agencies." Institute for Statistics and Mathematics, WU Vienna University of Economics and Business, 2010. http://epub.wu.ac.at/728/1/document.pdf.

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This paper introduces a model framework for dynamic credit rating processes. Our framework aggregates ordinal rating information stemming from a variety of rating sources. The dynamic of the consensus rating captures systematic as well as idiosyncratic changes. In addition, our framework allows to validate the different rating sources by analyzing the mean/variance structure of the rating errors. In an empirical study for the iTraxx Europe companies rated by the big three external rating agencies we use Bayesian techniques to estimate the consensus ratings for these companies. The advantages a

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6

Milidonis, Andreas. "Estimation of stock price distress costs associated with downgrades using regime-switching models." restricted, 2006. http://etd.gsu.edu/theses/available/etd-12122006-110918/.

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Thesis (Ph. D.)--Georgia State University, 2006.<br>Title from title screen. Shaun Wang, committee chair; Sam Cox, Omesh Kini , Eric Ulm, committee members. Electronic text (135 p.) : digital, PDF file. Description based on contents viewed July 18, 2007. Includes bibliographical references (p. 87-94).

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7

Lehmann, Christoph. "A Multi-Stage Heuristic of Breakpoint Estimation for Rating Classes." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-220079.

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We assume pairs of random variables (X_i, Y_i), whereby the real variable X_i measures the creditworthiness of individual i with i = 1, . . . , n. The Bernoulli variable Y_i represents the default indicator of individual i. Our main target is a division of the creditworthiness into a given number of groups with a homogeneous default risk, i.e. to estimate rating classes. The framework of change point analysis provides a nonparametric method to estimate the breakpoints between the rating classes under quite weak assumptions. Up to now, the theory of breakpoint estimation is developed under the

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8

Quartetti, Douglas A. "A Monte Carlo assessment of estimation in utility analysis." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/29371.

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9

Bockman, Victoria Cahill 1952. "BLOOD LOSS ESTIMATION BY MATERNITY NURSES." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275498.

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10

Alzubaidi, Hossein. "On rating of gravel roads." Doctoral thesis, KTH, Infrastructure and Planning, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3252.

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11

Aloquili, A. "Estimation of credit rating models : case study for MENA countries and their commercial banks." Thesis, Coventry University, 2014. http://curve.coventry.ac.uk/open/items/82213d64-6097-4482-a61a-c67d698f5e95/1.

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Credit Rating Agencies (CRAs) play a key role in financial markets by helping to reduce informative asymmetry between lenders and investors, on one side, and issuers on the other side, with regard to the creditworthiness of banks or countries. This crucial role has expanded alongside financial globalisation and received an additional boost from Basel II which integrates the ratings of CRAs into the rules for setting weights for credit risk. Ratings adjustment tends to be sticky, lagging behind markets, and often overreact when they do change. This overreaction may have aggravated the recent fi

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12

Jones, Laurence. "The credit rating industry under new regulatory regimes : the case of financial institutions." Thesis, Bangor University, 2019. https://research.bangor.ac.uk/portal/en/theses/the-credit-rating-industry-under-new-regulatory-regimes(86afd105-d094-431e-b345-1e9db149cb46).html.

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The dominant role of credit ratings, along with the failure of important FIs, exacerbated the 2008 crisis and caused further damage to European economies, which highlighted the need for effective regulation to prevent a reoccurrence. This thesis investigates the effect of EU and US recent regulatory reforms of the rating industry on the quality of credit ratings of financial institutions (FIs), as well as the impact of the new EU financial regulatory initiatives on the performance of FIs. The first empirical Chapter focuses on the EU reforms of credit rating agencies (CRAs) and provides eviden

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13

Tillich, Daniel, and Christoph Lehmann. "Estimation in discontinuous Bernoulli mixture models applicable in credit rating systems with dependent data." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-222582.

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Objective: We consider the following problem from credit risk modeling: Our sample (Xi; Yi), 1 < i < n, consists of pairs of variables. The first variable Xi measures the creditworthiness of individual i. The second variable Yi is the default indicator of individual i. It has two states: Yi = 1 indicates a default, Yi = 0 a non-default. A default occurs, if individual i cannot meet its contractual credit obligations, i. e. it cannot pay back its outstandings regularly. In afirst step, our objective is to estimate the threshold between good and bad creditworthiness in the sense of dividing th

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14

Darienzo, Matteo. "Detection and estimation of stage-discharge rating shifts for retrospective and real-time streamflow quantification." Thesis, Université Grenoble Alpes, 2021. http://www.theses.fr/2021GRALU006.

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Les séries temporelles de débit des rivières sont établies à l'aide de "courbes de tarage", qui sont des modèles avec les hauteurs d’eau en entrée et les débits en sortie. Malheureusement, de nombreuses stations hydrométriques ont une relation hauteur-débit instable, notamment à cause de l’évolution du lit de la rivière lors des crues. Ces "détarages" posent problème à la fois pour l'établissement des séries hydrologiques de long-terme (analyse rétrospective) et pour la fourniture de données en temps réel, par exemple pour la prévision des inondations, avec des incertitudes quantifiées et fiab

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15

Kim, Yeonsu. "Probabilistic Estimation of River Discharge Considering Channel Characteristics Uncertainty with Particle Filters." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/180482.

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16

Tillich, Daniel. "Generalized Modeling and Estimation of Rating Classes and Default Probabilities Considering Dependencies in Cross and Longitudinal Section." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-222601.

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Our sample (Xit; Yit) consists of pairs of variables. The real variable Xit measures the creditworthiness of individual i in period t. The Bernoulli variable Yit is the default indicator of individual i in period t. The objective is to estimate a credit rating system, i.e. to particularly divide the range of the creditworthiness into several rating classes, each with a homogeneous default risk. The field of change point analysis provides a way to estimate the breakpoints between the rating classes. As yet, the literature only considers models without dependencies or with dependence only in cro

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17

Tillich, Daniel. "Bruchpunktschätzung bei der Ratingklassenbildung." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-130581.

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Ratingsysteme sind ein zentraler Bestandteil der Kreditrisikomodellierung. Neben der Bonitätsbeurteilung auf der Ebene der Kreditnehmer und der Risikoquantifizierung auf der Ebene der Ratingklassen spielt dabei die Bildung der Ratingklassen eine wesentliche Rolle. Die Literatur zur Ratingklassenbildung setzt auf modellfreie, in gewisser Weise willkürliche Optimierungsverfahren. Ein Ziel der vorliegenden Arbeit ist es, stattdessen ein parametrisches statistisches Modell zur Bildung der Ratingklassen einzuführen. Ein geeignetes Modell ist im Bereich der Bruchpunktschätzung zu finden. Dieses Mode

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18

Hassanijalilian, Oveis. "Soybean Leaf Chlorophyll Estimation and Iron Deficiency Field Rating Determination at Plot and Field Scales Through Image Processing and Machine Learning." Diss., North Dakota State University, 2020. https://hdl.handle.net/10365/31871.

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Iron deficiency chlorosis (IDC) is the most common reason for chlorosis in soybean (Glycine max (L.) Merrill) and causes an average yield loss of 120 million dollars per year across 1.8 million ha in the North Central US alone. As the most effective way to avoid IDC is the use of tolerant cultivars, they are visually rated for IDC by experts; however, this method is subjective and not feasible for a larger scale. An alternate more objective image processing method can be implemented in various platforms and fields. This approach relies on a color vegetation index (CVI) that can quantify chloro

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19

Westerberg, Ida. "Observational Uncertainties in Water-Resources Modelling in Central America : Methods for Uncertainty Estimation and Model Evaluation." Doctoral thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-152074.

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Knowledge about spatial and temporal variability of hydrological processes is central for sustainable water-resources management, and such knowledge is created from observational data. Hydrologic models are necessary for prediction for time periods and areas lacking data, but are affected by observational uncertainties. Methods for estimating and accounting for such uncertainties in water-resources modelling are of high importance, especially in regions such as Central America. Observational uncertainties were addressed in three ways in this thesis; quality control, quantitative estimation and

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20

Guerrero, José-Luis. "Robust Water Balance Modeling with Uncertain Discharge and Precipitation Data : Computational Geometry as a New Tool." Doctoral thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-190686.

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Models are important tools for understanding the hydrological processes that govern water transport in the landscape and for prediction at times and places where no observations are available. The degree of trust placed on models, however, should not exceed the quality of the data they are fed with. The overall aim of this thesis was to tune the modeling process to account for the uncertainty in the data, by identifying robust parameter values using methods from computational geometry. The methods were developed and tested on data from the Choluteca River basin in Honduras. Quality control of

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21

Holmin, Jessica Marie. "Aging and Weight-Ratio Estimation." TopSCHOLAR®, 2012. http://digitalcommons.wku.edu/theses/1143.

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Many researchers have explored the way younger people perceive weight ratios using a variety of methodologies; however, very few researchers have used a more direct ratio estimation procedure, in which participants estimate an actual ratio between two or more weights. Of the few researchers who have used a direct method, the participants who were recruited were invariably younger adults. To date, there has been no research performed to examine how older adults perceive weight-ratios, using direct estimation or any other technique. Past research has provided evidence that older adults have more

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22

Edvinsson, Simon. "Estimation of the local Hurst function of multifractional Brownian motion : A second difference increment ratio estimator." Thesis, Umeå universitet, Institutionen för matematik och matematisk statistik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105770.

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In this thesis, a specific type of stochastic processes displaying time-dependent regularity is studied. Specifically, multifractional Brownian motion processes are examined. Due to their properties, these processes have gained interest in various fields of research. An important aspect when modeling using such processes are accurate estimates of the time-varying pointwise regularity. This thesis proposes a moving window ratio estimator using the distributional properties of the second difference increments of a discretized multifractional Brownian motion. The estimator captures the behaviour

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23

Rivard, Tony. "Reactivity ratio estimation: Two case studies." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6388.

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Two separate case studies on polymerization kinetics were performed. These studies focused on the determination of reactivity ratios: important copolymerization kinetic parameters. They are used to predict multicomponent polymer composition directly and have an indirect influence on the prediction of polymerization rate and final properties. In some cases, these parameters can be very difficult to obtain using standard techniques. These standard methods involve low conversion experiments and measurement of the final polymer composition. The goal of the first study was to determine the reactivi

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Máková, Barbora. "Hedge Ratio Estimation in Inventory Management." Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-198395.

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Companies dependent on commodities for their production have to deal with volatile commodity prices and should employ measures for risk reduction as unfavourable spot price development may cause significant losses. A useful tool for diminishing the risk is hedging on futures market; however, this approach faces a crucial question of optimal hedge ratio determination (ratio between spot and futures units). Our thesis examines nine different ways of optimal hedge ratio estimation (naive, Sharpe, mean extended Gini coefficient, generalized semivariance, value at risk, and minimum variance through

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25

Banerjee, Moulinath. "Likelihood ratio inference in regular and non-regular problems /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/8938.

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26

Jimenez, Laura. "Estimating the Reliability of Concept Map Ratings Using a Scoring Rubric Based on Three Attributes." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2284.

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Concept maps provide a way to assess how well students have developed an organized understanding of how the concepts taught in a unit are interrelated and fit together. However, concept maps are challenging to score because of the idiosyncratic ways in which students organize their knowledge (McClure, Sonak, & Suen, 1999). The construct a map or C-mapping" task has been shown to capture students' organized understanding. This "C-mapping" task involves giving students a list of concepts and asking them to produce a map showing how these concepts are interrelated. The purpose of this study was

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27

Gunnvald, Rickard. "Estimating Probability of Default Using Rating Migrations in Discrete and Continuous Time." Thesis, KTH, Matematisk statistik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-150428.

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During the financial crisis that began in 2008, even whole countries and very large companies defaulted or were on the verge of defaulting. The turmoil made risk managers and regulators more vigilant in scrutinising their risk assessment. The probability of default (PD) is an essential parameter in measuring counterparty credit risk, which in turn has impact on pricing of loans and derivatives. The last decade, a method using Markov chains to estimate rating migrations, migration matrices and PD has evolved to become an industry standard. In this thesis, a holistic approach to implementing thi

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Baktash, Seddigheh. "Ratio-Independent Arterial Stiffness-Based Blood Pressure Estimation." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30971.

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Blood pressure is one of the crucial vital signs that still lacks measurement accuracy in clinical environments. It is reported by physicians that automated non-invasive blood pressure measurement devices, which are usually based on the oscillometric method, do not provide accurate estimation of blood pressure. This problem has been addressed in this work by incorporating arterial stiffness in blood pressure measurement. Pulse transit time is first used to estimate arterial stiffness parameters. Afterwards, these parameters are fixed into a model of the oscillometric envelope which can then be

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29

Wang, Bingxia. "Estimation of Standardized Mortality Ratio in Epidemiological Studies." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/WangB2002.pdf.

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30

Kettermann, Anna. "Estimation of Standardized Mortality Ratio in Geographic Epidemiology." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/KettermanA2004.pdf.

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31

Oshungade, I. O. "Nonresponse and ratio estimation problems in sample surveys." Thesis, University of Essex, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380376.

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32

Меренкова, Ольга Віталіївна, Ольга Витальевна Меренкова та Olga Vitaliivna Merenkova. "Розвиток інвестування банками інноваційних технологій обслуговування клієнтів". Thesis, Українська академія банківської справи Національного банку України, 2009. http://essuir.sumdu.edu.ua/handle/123456789/51610.

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Such moments were developed in the work as the probabilistic approach and approach on the basis of fuzzy logic methods for discrete and interval estimation of financial result from investment projects realization concerning the introduction of innovative technologies of serving clients; such projects risk level interval-integrative estimation realization mechanism on the basis of baeyes’s analysis; the procedure of accounting the client-oriented innovations by a bank at determination of its rating position on the investment market. It was grounded, that in case of bank venture fi-nancing princ

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FROST, WILLIAM EDWARD. "DEVELOPMENT OF RESOURCE VALUE RATINGS AND ESTIMATION OF CARRYING CAPACITY OF SOUTHERN ARIZONA RANGELANDS." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/188146.

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The objective of this research was development and testing of a method for estimating cattle carrying capacities. A series of studies were conducted in developing this method. Range site and vegetation production data were grouped by topographic position and multiple linear regression equations were calculated for predicting vegetation production as a site deviated from the average case of a given range site. Overstory-understory relationships from the literature were adapted into overstory canopy cover classes for predicting understory production and tested on a variety of range sites. Use of

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Braga, Ígor Assis. "Stochastic density ratio estimation and its application to feature selection." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-07042015-142545/.

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The estimation of the ratio of two probability densities is an important statistical tool in supervised machine learning. In this work, we introduce new methods of density ratio estimation based on the solution of a multidimensional integral equation involving cumulative distribution functions. The resulting methods use the novel V -matrix, a concept that does not appear in previous density ratio estimation methods. Experiments demonstrate the good potential of this new approach against previous methods. Mutual Information - MI - estimation is a key component in feature selection and essential

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DeYoung, Clara. "Biomass Estimation Using the Component Ratio Method for White Oak." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/50421.

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With higher demands on biomass, the ability to accurately estimate the amount in a stand is more important now than ever before. Existing models currently in use by the Forest Inventory and Analysis (FIA) program of the United States Department of Agriculture (USDA) Forest Service include the Component Ratio Method (CRM). However, testing of the CRM models is needed to validate and calibrate them. The objective of this research was to test and develop a system of equations capable of producing consistent volume and biomass estimates for standing trees of commercially important hardwood species

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36

Pauluzzi, David Renato. "Signal-to-noise ratio and signal-to-impairment ratio estimation in AWGN and wireless channels." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq22377.pdf.

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Chen, Te-Ching. "Estimating common odds ratio with missing data." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2725.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2005.<br>Thesis research directed by: Mathematical Statistics. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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Hassana, Ramesh Rakesh Kashyap. "Transform Domain Acquisition of Spread Spectrum Signals in a Low Signal to Noise Ratio Environment." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1289579500.

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Sisman, Fatma Nurten. "Estimation Of Dynamic Soil Properties And Soil Amplification Ratios With Alternative Techniques." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615501/index.pdf.

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Earthquakes are among the most destructive natural disasters affecting urban populations. Structural damage caused by the earthquakes varies depending not only on the seismic source and propagation properties but also on the soil properties. The amplitude and frequency content of seismic shear waves reaching the earth&rsquo<br>s surface is dependent on local soil conditions. It is well known that the soft sediments on top of hard bedrock can greatly amplify the ground motion and cause severe structural damage. When the fundamental period of the soil is close to the fundamental period of a stru

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Burmeister, Brian. "Cue estimation for vowel perception prediction in low signal-to-noise ratios." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-05132009-151828/.

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Colatat, Mahyulee Chang. "Estimating performance mean and variability with distributional rating scales a field study towards enhanced performance measurement /." Bowling Green, Ohio : Bowling Green State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1206385486.

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Colatat, Mahyulee C. "Estimating Performance Mean and Variability With Distributional Rating Scales: A Field Study Towards Improved Performance Measurement." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1206385486.

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DE, PAOLA ROSITA. "Median estimation using auxiliary variables." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/36075.

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In the present study the estimation of the median has been taken into consideration using different methods of analysis. First of all the estimation of the median without auxiliary information is analyzed. Then the method of Kuk and Mak proposed in 1989 is exposed: this way of estimating the median is based on the knowledge of the population median of auxiliary variable X. Another method, which considers the median of the auxiliary variable is the ratio estimator. Then two methods based on the regression estimator are analyzed : the first one considers the regression based on the median

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De, Zoysa Merrenna Manula. "Neural network estimation of air-fuel ratio in internal combustion engines." Thesis, University of Brighton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399048.

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This thesis presents an investigation into a novel method of estimating the air-fuel ratio of a gasoline-fuelled spark-ignition internal combustion engine. The measurement of the air-fuel ratio is important for controlling an engine to reduce exhaust emissions. In production vehicles, the air-fuel ratio is measured using an exhaust gas analyser and the exhaust emissions are reduced by using electronically controlled three-way catalytic converters, which are expensive and subject to operationallimitations such as, requiring the engine to operate with a stoichiometric air-fuel ratio. A micro-pro

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Paříková, Adéla. "Hedge Ratio Estimation: Comparison of Constant OLS, ARCH and GARCH Approaches." Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-206944.

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Volatile prices of commodities relate to financial risk faced by individuals or economic subjects exposed to them. One way to minimize the impact of change in market price is to use its hedging by futures contracts. The optimal hedge ratio estimation (ratio between units of spot and futures contracts) is the focus of this study. Its objective is to compare hedge ratios based on minimum variance methodology using three methods - OLS, ARCH and GARCH, by measuring their hedging effectiveness using variance and value at risk reduction. The results differ across commodities, however several conclus

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Muindi, Pius Matheka. "Interval Estimation for the Ratio of Percentiles from Two Independent Populations." Digital Commons @ East Tennessee State University, 2008. https://dc.etsu.edu/etd/1969.

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Percentiles are used everyday in descriptive statistics and data analysis. In real life, many quantities are normally distributed and normal percentiles are often used to describe those quantities. In life sciences, distributions like exponential, uniform, Weibull and many others are used to model rates, claims, pensions etc. The need to compare two or more independent populations can arise in data analysis. The ratio of percentiles is just one of the many ways of comparing populations. This thesis constructs a large sample confidence interval for the ratio of percentiles whose underlying dist

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Alsarhan, Ala'a Mohammad. "Alternative Methods of Estimating the Degree of Uncertainty in Student Ratings of Teaching." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6939.

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This study used simulated results to evaluate four alternative methods of computing confidence intervals for class means in the context of student evaluations of teaching in a university setting. Because of the skewed and bounded nature of the ratings, the goal was to identify a procedure for constructing confidence intervals that would be asymmetric and not dependent upon normal curve theory. The four methods included (a) a logit transformation, (b) a resampling procedure, (c) a nonparametric, bias corrected accelerated Bootstrapping procedure, and (d) a Bayesian bootstrap procedure. The meth

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Sokolovskyi, D. N., and A. V. Kutsak. "The estimation of levels of radiation exposure to people due to food ration." Thesis, Sumy state university, 2017. http://essuir.sumdu.edu.ua/handle/123456789/54505.

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Brancamp, Tami Urbani. "Correspondence between nasalance scores and nasality ratings with equal appearing intervals and direct magnitude estimation scaling methods." abstract and full text PDF (free order & download UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3307133.

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Ladak, Al-Karim Madatally. "Resampling-based variance estimators in ratio estimation with application to weigh scaling." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29195.

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Weigh scaling is a method of estimating the total volume of timber harvested from a given region. The implementation of statistical sampling techniques in weigh scaling is described, along with related issues. A review of ratio estimators, along with variance estimators of the classical ratio estimator is conducted. The estimation of the variance of the estimated total volume is considered using jackknife- and bootstrap-based variance estimators. Weighted versions of the jackknife and bootstrap variance estimators are derived using influence functions and Fisher Information matrices. Empirical

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