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 7 of 7 for “"Bias Analysis"”.
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Towards establishing the equivalence of the IsiXhosa and English versions of the Woodcok Munoz language survey : an item and construct bias analysis of the verbal analogies scale
… two sub aims. The first was to investigate item bias by identifying DIF items in the VA scale across the isiXhosa and English by conducting a logistic regression and Mantel-Haenszel procedure. Five items were identified by both techniques as DIF. The second sub aim was to evaluate construct …
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Evaluating multi-satellite chlorophyll-a datasets an ocean colour case study within the Southern Benguela
… but showed a slight consistent overestimation bias. Analysis of match-ups showed an underestimation of high chl-a concentrations and overestimation of lower chl-a concentrations by both global products. An application of the products within St.Helena bay during high biomass bloom events showed …
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New methods of online calibration for item bank replenishment
… response theory, because the scoring, equating, bias analysis of the test, and item selection in adaptive tests are all based on the item parameters. As a test is continuously administered, item calibration needs to be conducted for new items at intervals to replace overexposed, obsolete, or …
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The Effects Of Differential Item Functioning On Predictive Bias
… to investigate the relation between measurement bias at the item level (differential item functioning, dif) and predictive bias at the test score level. Dif was defined as a difference in the probability of getting a test item correct for examinees with the same ability but from different …
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Towards a culture-free model of the Big Five - a cross-cultural investigation of the Orpheus in four different language families
… and Leung's (1997) Theory of Equivalence and Bias. In contrast to extant research which has largely concentrated on the adaptation of ability measures the present research was operationalised through adapting and translating Orpheus, a work-based Big Five personality questionnaire, into …
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Quantitative and Qualitative Analysis of Text-to-Image models
… of text prompts. However, a comprehensive analysis that examines both their performance and possible biases is often missing from existing research. In this thesis, I undertake a thorough examination of several leading text-to-image models, namely Stable Diffusion, DALL-E Mini, Lafite, and …
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Assessing and Improving Data Quality in Linked Panel Surveys: With a Focus on Panel and Linkage Consent (Bias)
… linked panel surveys, focusing on panel consent (bias) and linkage consent (bias) (RQ1) and strategies for improvement (RQ2). It introduces a new conceptual framework for assessing and improving the data quality of linked panel surveys, focusing on panel and linkage consent, compatible with the …