This report explores the limits of traditional models and highlights policy questions that may motivate switching to advanced models. The findings may help agencies discover the most suitable approach for every modeling task. Second, common obstacles encountered when moving toward advanced models are listed and analyzed. By addressing the obstacles many advanced modeling projects have encountered, those agencies that decide to move toward advanced models may be able to circumvent some difficulties faced by other agencies. Topics addressed included institutional issues, funding, project organization, and the technical implementation. The literature reviewed supports some findings with a theoretical background. Ultimately, stimulating the discussion about advanced models in general is an underlying purpose of this report. (Author/publisher)
Abstract