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 12 of 12 for “"spurious correlation"”.
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Environmental regulations and market competitiveness: some empirical evidence from electric utilities
… results show that while the sign of the correlation coefficients tend to validate those of the Porter hypothesis, the association between environmental and economic performance is either subject to a spurious correlation problem when they are significant or is insignificant even when the …
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Fire the caterer : a test of catering theory for corporate dividend payout policy
… analysis shows that the model is based on spurious correlation, and not true causation.
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Herding by South African Equity Unit Trusts: An analysis of the causes and extent of herding behaviour on the JSE Limited
… market, controlled for conditions that drive spurious correlation; namely, net fund flows and momentum/ share size trading strategies. Employing the Sias measure, the empirical results reveal strong evidence of equity unit trust herding at the individual share-level for the period December …
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Essays in applied microeconomics : signaling, marriage hazard rates, and ability sorting
… rates. I overcome problems of endogeneity and spurious correlation by using the oil boom and bust in Texas from 1970 to 1990 to instrument for average male earnings in Texas counties. I estimate that a 10% increase in male earnings results in a 15% increase in the hazard rate of never married …
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Dementia Risk in Elders with Anxiety and Insomnia
… between BZRAs and subsequent dementia may be a spurious correlation for which the prodromal onset is responsible. This study proposed to test the postulate that the anxiety and insomnia symptom cluster (A/I) is a predictor of dementia. A retrospective data analysis was conducted on the Aging, …
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Dementia Risk in Elders with Anxiety and Insomnia
… between BZRAs and subsequent dementia may be a spurious correlation for which the prodromal onset is responsible. This study proposed to test the postulate that the anxiety and insomnia symptom cluster (A/I) is a predictor of dementia. A retrospective data analysis was conducted on the Aging, …
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Econometric assessment of the impact of power sector reforms in Africa: A study of the generation, transmission and distribution sectors
… reduce as far as practicable, the likelihood of spurious correlation. The main conclusion from the generation sector study is that, the establishment of a regulatory agency is generally associated with favourable generation outcomes. These are likely to be achieved after a minimum period of 2 …
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Radiomics of Nsclc: Quantitative Ct Image Feature Characterization and Tumor Shrinkage Prediction
… the results. The optimal model gave a strong correlation between the observed and predicted shrinkages with .</p> <p>The second objective of this work was to identify sets of NSCLC CT image features that are reproducible, non-redundant, and informative across multiple machines. Feature sets …
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Action Recognition with Knowledge Transfer
… i) Current action recognition datasets have a spurious correlation between action types and background scene types. The models trained on these datasets are biased towards the scene instead of focusing on the actual action. This scene bias leads to poor generalization performance. ii) Directly …
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TOWARDS RELIABLE AI UNDER DISTRIBUTION SHIFTS: A DATA-CENTRIC PERSPECTIVE
Machine learning (ML) models often rely on spurious correlations in the training data, leading to performance degradation and unreliability when processing inputs under distribution shifts. This thesis systematically studies the robustness to distribution shifts for ML models from a data-centric …
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Analysing and Mitigating Classification Bias for Text-based Foundation Models
… particularly regarding their susceptibility to spurious correlations and implicit model bias. This thesis analyses the forms of bias and spurious correlations that are present when NLP foundation models are applied to text classification tasks. We analyse particular biases present in the …
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Stochastic Models of Limit Order Markets
… variance. Previous studies also found a positive correlation between volatility and trading volume, but in order-driven markets prices are determined by the limit order book activity, so the association between trading volume and volatility is unclear. We show how a spurious correlation between …