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Dec 21, 2015
Policy ModelsPolicy Models
“A model should clarify the issues in the debate; it must be able to enforce a discipline of analysis and discourse among stakeholders; and it must provide an interesting form of “advice,” primarily in the form of what not to do…”
“A model should clarify the issues in the debate; it must be able to enforce a discipline of analysis and discourse among stakeholders; and it must provide an interesting form of “advice,” primarily in the form of what not to do…”
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Model Evaluation CriteriaModel Evaluation Criteria
Model ScaleModel Scale
Spatial - Resolution - Extent
Temporal - Time Step - Duration
Human - Agent - Domain (also time horizons)
Spatial - Resolution - Extent
Temporal - Time Step - Duration
Human - Agent - Domain (also time horizons)
*fine vs. broad scale
Temporal ComplexityTemporal Complexity
More time steps, longer duration Overlapping steps or scales for
different processes Lags and feedbacks
More time steps, longer duration Overlapping steps or scales for
different processes Lags and feedbacks
“…at least one level of actor needs to have an awareness of both short and long time horizons and be able to communicate with other actors operating at shorter time horizons.“
Spatial ComplexitySpatial Complexity
Spatially Representative - incorporate or represent data in two or more spatial dimensions
Spatially Interactive - explicitly defines spatial relationships
Spatially Representative - incorporate or represent data in two or more spatial dimensions
Spatially Interactive - explicitly defines spatial relationships
Human ComplexityHuman Complexity
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Discussion - ComplexityDiscussion - Complexity
Figures 5, 6, & 7
comparison of scale and complexity
raster vs. vector
human decision complexity
Figures 5, 6, & 7
comparison of scale and complexity
raster vs. vector
human decision complexity
Discussion - theoryDiscussion - theory
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Synchrony, Asynchrony & Scale Mismatch
Synchrony, Asynchrony & Scale Mismatch
Discussion - MethodsDiscussion - Methods
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Discussion - MethodsDiscussion - Methods
Systems approach Multidisciplinary balance Feedbacks Remote Sensing Data GIS data integration / prep Scale - multiscale ???
Systems approach Multidisciplinary balance Feedbacks Remote Sensing Data GIS data integration / prep Scale - multiscale ???
Authors’ PropositionAuthors’ Proposition
Need for accepted framework
Modular, open-source approach
Need for accepted framework
Modular, open-source approach
When is the modularity of a model a hindrance, and when does a modular design excel?
When is the modularity of a model a hindrance, and when does a modular design excel?
given advanced enough image processing and geocoding services, could the model application process be simplified (in some cases) by creating a “state snapshot”?
given advanced enough image processing and geocoding services, could the model application process be simplified (in some cases) by creating a “state snapshot”?
Is the authors’ discussion of scale and multi-scale approaches really pertinent? Couldn’t processes take place at ‘different scales’ in the same continuous Cartesian model space
Is the authors’ discussion of scale and multi-scale approaches really pertinent? Couldn’t processes take place at ‘different scales’ in the same continuous Cartesian model space