At the center of all fuzzy modeling of ecological problems is located a rule-based system. The inputs for this system are taken from a GIS describing a landscape or from a dynamic simulation system. The outputs of the model evaluate environmental indicators. The rule set is easy to understand and should be a basis for discussing the model with other experts. Use of a fuzzy model should be accompanied by a strategy for its further development. This strategy should encompass visualization of system behavior, test on real data sets, sensitivity analysis, etc., including an adaptation using a training algorithm.
The following advices can be offered on the development of fuzzy models:
• start with simple models (no more than three inputs, otherwise use two models);
• use triangular- or trapezoidal-shaped membership functions;
• use FUZZY_AND Prod instead of FUZZY_AND Min;
• use crisp values as output type;
• use training procedures to enhance the model; and
• check the model using graphical analysis tools, rule statistics, sensitivity analyses.
See also: Agriculture Models; Agriculture Systems; Application of Ecological Informatics; Artificial Neural Networks; Biodiversity; Biological Integrity; Biomass; Computer Languages; Development Capacity; Ecological Network Analysis, Environ Analysis; Ecosystems; Empirical Models; Habitat; Habitat Selection and Habitat Suitability Preferences; Landscape Modeling; Multilayer Perceptron; Sensitivity and Uncertainty; Software; Spatial Distribution Models; Spatial Models and Geographic Information Systems; Systems Ecology.
: gl (p2 ■ p3 ■ ...;?l; ?2 ■ ...;bl; b2 ■ ...;t ) g 2(pl^ p3 ■ ...;?!■ ?2 ■ ...;bu ...;t )
Was this article helpful?
You Might Start Missing Your Termites After Kickin'em Out. After All, They Have Been Your Roommates For Quite A While. Enraged With How The Termites Have Eaten Up Your Antique Furniture? Can't Wait To Have Them Exterminated Completely From The Face Of The Earth? Fret Not. We Will Tell You How To Get Rid Of Them From Your House At Least. If Not From The Face The Earth.