Global ETD Search
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Showing 1 to 6 of 6 for “"Double bootstrap"”.
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Essays on data transformation and regression analysis
… escore desenvolvidos no Capítulo 2 usando o fast double bootstrap. Seu desempenho foi avaliado via simulações de Monte Carlo. O resultado principal é que o teste fast double bootstrap é superior ao teste bootstrap clássico. No Capítulo 4 propusemos sete estimadores não-paramétricos para estimar os …
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Structural analysis and auditing of SNOMED hierarchies using abstraction networks
… to assess the hypotheses. With the use of the double bootstrap and Fisher's exact test (two-tailed), the aforementioned hypotheses are confirmed. Auditing on various complex concept groups based on the taxonomies is shown to yield a statistically significant higher proportion of errors.
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Variational approximation for importance sampling and statistical inference on social influence
… network with different degrees of influence. A double bootstrap strategy is used to resolve the uncertainty from by estimating nuisance parameters in hypothesis testing. Theoretical justification of the proposed method is provided to show that the hypothesis testing is powerful for larger …
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Risk management in crop farming
… model, various probit models, DEA method with double bootstrap and system of simultaneous equations based on crop insurance data collected by Research Institute of Agricultural Economics (AKI), on utilised area data from the Integrated Administration and on FADN data. The main results of the …
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Statistical analysis of networks with community structure and bootstrap methods for big data
… The second part of this dissertation concerns bootstrap methods for big data. Statistical analysis of networks with community structure: Networks are ubiquitous in today's world --- network data appears from varied fields such as scientific studies, sociology, technology, social media and the …
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Semiparametric Methods for Two Problems in Causal Inference using Machine Learning
… fashion. Our test is calibrated using a novel double bootstrap. We demonstrate an algorithm to perform this procedure in a computationally efficient manner. Simulations confirm that we are able to improve power in high-dimensional settings with low-dimensional structure, whilst maintaining the …