Dr Yoo’s work focuses on the statistical modeling of uncertainty in spatial scale problems, and uncertainty propagation in geographical analysis. Her study of spatial stochastic simulation and development of supporting source code during her doctoral studies provide her with the means to identify and conceptualize uncertainty problems. She has conducted uncertainty assessment and modelling in various fields, including landscape ecology, remote sensing, and public health/urban planning. In addition, a number of her on-going research projects involve uncertainty/error modelling as one of their major research aims.