Weighting

Data Collection, Weighting, and Modeling Techniques to Estimate Unbiased Population Parameters

Empirical research studies across multiple fields employ data from large surveys for their analysis. In doing so, studies must address such sampling-related issues as non-response, missing data, unequal sampling, and other survey biases. The voluntary nature of most surveys means that, in many empirical applications, data are not randomly selected from the population. Instead, researchers […]

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From Cross-Sectional to Longitudinal: The Impact of Sampling Strategies on Measuring Mobility Choices

The transportation profession has long relied on surveys as a main source of data. These surveys are used across a broad range of applications, including but not limited to, travel demand forecasting, travel behavior analysis, policy evaluation, environmental impact assessment, accessibility analysis, and economic evaluation. Despite the increasing accessibility of passive data collection methods, such

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