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 55 for “"hypothesis test"”.
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Properties and applications of a martingale hypothesis test
… thesis, I explore the properties of a martingale hypothesis test, and present three applications of the test that address empirical questions in asset-pricing finance. The martingale test exploits the lack of correlation between forecast error and the current information set. The test is designed …
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Randomness Tests for Binary Sequences
… specifically analyzing the concept of hypothesis test, a statistical inference model representing a basic tool for the statistical characterization of random processes. In the hypothesis testing framework, a central idea is the p-value, a numerical measure assigned to each sample …
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A controlled sensing approach to graph classification
… classification problem as a composite sequential hypothesis test with control. In contrast to prior work, posing the problem as a composite sequential hypothesis test with control provides provable performance guarantees through the controlled sensing framework and allows the classification …
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Design and theoretical analysis of advanced power based positioning in RF system
… indoor/outdoor transition scenario, we propose hypothesis test based fusion method to integrate multi-modal localization sensors. In the first paper, a ubiquitous tracking using motion and location sensor (UTMLS) is proposed. As a fallback approach, power-based schemes are cost-effective when …
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Contributions to the theory of generalized inverses, the linear model and outliers
… the variance-covariance structure is σ².I. Hypothesis-test statistics for non-estimable functions are shown to give no further information than underlying estimable functions. For an arbitrary variance-covariance structure the "sweep-out" method is generalized. The John and Draper model for …
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Bandwidth Selection Concerns for Jump Point Discontinuity Preservation in the Regression Setting Using M-smoothers and the Extension to hypothesis Testing
… this dissertation is to provide a nonparametric hypothesis test, based on Chu et al.'s (1998) M-smoother, to test for a break in the continuity of an underlying regression mean function. Our proposed hypothesis test is nonparametric in the sense that the mean function away from the jump point(s) …
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Statistical modeling and analysis of audio-visual association in speech
… in which this problem is put in the form of a hypothesis test and focus on the subtask of discriminating between associated and non-associated audio-visual observations. Various methods for modeling our audio-visual observations and ways of carrying out this test are studied and their relative …
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The determinants of the Choice between Green and Conventional Buildings in the Gauteng Office market
… significance of certain factors such as rental, hypothesis tests were conducted with logistic regressions and verified by interviews. Three hypothesis were tested two of which looked at the rentals and operational cost for each type of building , these revealed that the medians as well as …
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Effect size estimation and robust classification for irregularly sampled functional data
… on functional data, perform functional ANOVA hypothesis test, and conduct power analysis. We develop an approach to quantify the effect size on functional data, perform functional ANOVA hypothesis test, and conduct power analysis. We introduce the functional signal-to-noise ratio ($fSNR$), …
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Enabling process improvements through systems thinking
… of realization. There is no right way or latest and greatest process that can guarantee success, therefore the approach, and not necessarily the process, is critical. Since every process improvement project is different, using the systems thinking approach decreases the risk of failure as …
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Methods for Systematic Exploratory Analysis of Gene Expression Data with Applications to Cancer Genomics
… samples. This work first introduces the XL-mHG test, a sensitive and specific hypothesis test for detecting gene set enrichment, and discusses its algorithmic and statistical properties. It further introduces GO-PCA, a method for exploratory analysis of gene expression data using prior …
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A statistical perspective on machine learning: three essays on improvement, application and interpretation of predictive algorithms
… of black-box algorithms by means of statistical hypothesis testing.
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An online learning algorithm for technical trading
… strategies that can survive historical back-testing as well as form an overall aggregated portfolio trading strategy from the set of underlying trading strategies implemented on daily and intraday Johannesburg Stock Exchange data. The resulting population time-series are investigated using …
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Exploring scatterer anisotrophy in synthetic aperture radar via sub-aperture analysis
… the sub-aperture scattering model, we develop a hypothesis test to characterize anisotropy. We start with an isolated scatterer model which produces a test with an intuitive interpretation. We then address the problem of robustness to interfering scatterers by extending the model to account for …
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A validation software package for discrete simulation models
… used in McNichol's statistical software. Hypothesis tests comparing real and model responses are conducted using TESTHYPO. The potential cost of using an invalid model, in conjunction with the determination of the alpha level of significance, is analyzed in COSTRISK. A non-parametric …
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Positional accuracy of the Wide Area Augmentation System
… in x, y and z were computed and statistically tested with a hypothesis test. There was no statistical difference found between WAAS and autonomous position fixes when using two different consumer-grade units. A statistical difference was evident in a third unit type tested. Analysis of data …
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Impacts of great western development on agricultural production in the west of China
… function for great western development and a hypothesis test using the Monte-Carlo method. By maximum likelihood estimation with respect to the stochastic frontier production function, the measurement of the efficiency improvement is produced for the west and the east of China before and after …
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Statistical Methods for Extracting and Comparing Patterns in Multimodal Neuroimaging Studies
… focus on two main areas: feature extraction and hypothesis testing. Our first method is motivated by the need to mitigate the influence of nuisance variables (e.g., confounders) in observational studies of Alzheimer's disease. Specifically, it can be challenging to distinguish patterns in brain …
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Diagnosis, epidemiology and immunologic consequences of copper deficiency in calves
… copper concentration of 0.45 microgram/gram as a test endpoint, serum copper concentration had sensitivity of 0.53 and specificity of 0.89 for detection of low liver copper concentration. A number of management factors were significantly associated with either serum copper concentration or copper …
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Spatio-temporal fMRI signal analysis using information theory
… of mutual information is equivalent to a hypothesis test when the underlying densities are unknown. Furthermore we incorporate local spatial priors using the well-known Ising model thereby dropping the implicit assumption that neighboring voxel time-series are independent. As a consequence …
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