Search results
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Title
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A partial posterior p value test for multilevel mediation
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Author
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Cox, Kyle, Kelcey, Benjamin
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Date Created
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2023
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Subjects--Topical
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Statistics, Mathematics
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Description
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A variety of inferential tests are available for single and multilevel mediation but most come with notable limitations that balance tradeoffs between power and Type I error. We extend the partial posterior p value method (p3 method) to test multi...
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Title
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Analysis of failure time data with missing and informative auxiliary covariates.
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Author
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Ghosh, Lipika
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Date Created
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2011
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Subjects--Topical
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Statistics, Mathematics, Biometry
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Description
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In this dissertation we use Cox's regression model to failure time data with continuous informative auxiliary variables in the presence of a validation subsample. The work is motivated by a common problem of missing or mismeasured covariates in su...
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Title
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Best probability density function for random sampled data
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Author
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Jacobs, Donald J.
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Date Created
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2009
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Subjects--Topical
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Statistics, Probabilities
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Description
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The maximum entropy method is a theoretically sound approach to construct an analytical form for the probability density function (pdf) given a sample of random events. In practice, numerical methods employed to determine the appropriate Lagrange ...
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Title
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CUSTOMER ATTRITION MODELING AND FORECASTING
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Author
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Xu, Zehan
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Date Created
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2019
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Subjects--Topical
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Statistics
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Description
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Customer relationship management has shown its critical role in the success of a company in today’s increasingly competitive service industry. While modern machine learning techniques are widely adopted due to their advantages in working with exte...
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Title
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Changes in Lysozyme flexibility upon mutation are frequent, large and long-ranged
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Author
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Jacobs, Donald J., Verma, Deeptak, Livesay, Dennis R.
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Date Created
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2012
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Subjects--Topical
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Bioinformatics, Statistics
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Description
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We investigate changes in human c-type lysozyme flexibility upon mutation via a Distance Constraint Model, which gives a statistical mechanical treatment of network rigidity. Specifically, two dynamical metrics are tracked. Changes in flexibility ...
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Title
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Clean Power Plan, Dirty Politics: An Examination of State Reactions to Climate Regulation
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Author
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Withrow, Matthew
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Date Created
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2017
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Subjects--Topical
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Statistics, Power resources
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Description
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While carbon emissions are widely believed to be contributing to climate change, the U.S. has done little to limit the massive amounts of carbon being introduced into the atmosphere by electricity producing power plants. The Clean Power Plan (CPP)...
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Title
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Dynamic Modeling of Incomplete Event History Data
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Author
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Heng, Fei
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Date Created
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2019
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Subjects--Topical
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Statistics
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Description
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Event history analysis has important applications in many fields, such as medicine, engineering, econometrics, actuarial science, and social studies. We usually encounter missing data problems in the modeling of event history data. One typical pro...
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Title
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Evolution and dynamics of transcriptional regulation in bacteria
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Author
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Li, Shan
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Date Created
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2013
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Subjects--Topical
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Computer science, Statistics, Bioinformatics
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Description
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Although transcription is one of the most important biological functions of cells, our understanding of its regulation is still limited. In this dissertation, we have studied the transcriptional regulation in prokaryotes in three aspects. First, w...
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Title
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Generalized semiparametric varying-coefficient models for longitudinal data
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Author
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Qi, Li
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Date Created
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2015
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Subjects--Topical
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Mathematics, Statistics, Biometry
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Description
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In this dissertation, we investigate the generalized semiparametric varying-coefficient models for longitudinal data that can flexibly model three types of covariate effects: time-constant effects, time-varying effects, and covariate-varying effec...
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Title
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Goodness-of-Fit Tests Under Permutations
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Author
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Chen, Chen
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Date Created
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2019
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Subjects--Topical
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Statistics, Mathematics, Information science
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Description
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Several new goodness-of-fit tests are proposed on countable alphabets, where certain fundamental statistical concepts associated with random variables, such as cumulative distribution functions, characteristic functions and moments, may not exist....
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Title
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Heterogeneous crowd-sourced data analytics
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Author
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Thill, Jean-Claude
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Date Created
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2017
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Subjects--Topical
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Data mining, Statistics
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Description
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Advances in computing, communication, storage, and sensing technologies have reshaped the lives of people by changing the way they live, work, interact with their environments, and even socialize. Modern information systems collect valuable inform...
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Title
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High throughput nonparametric probability density estimation
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Author
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Jacobs, Donald J., Farmer, Jenny
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Date Created
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2018
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Subjects--Topical
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Statistics, Probabilities
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Description
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In high throughput applications, such as those found in bioinformatics and finance, it is important to determine accurate probability distribution functions despite only minimal information about data characteristics, and without using human subje...