When high risk is indicated but biota do not show high Hg levels, the system suggests frequent monitoring programs and remedial procedures to avoid future problems. Other sources can also be accounted for to adapt erroneous diagnostics. In HgEx , belief in these expressions with their respective DoBs are processed within the rules of the heuristic model using a series of Weighted Inference Equations for each fundamental concept. Process by which HgEx deals with inputs. One node can represent multiple output values.
Outputs are adjustable for other situations.
The knowledge accumulation process can be explained to and understood by Users. A User can input uncertainties and make multiple choices perstep or leave a step unknown. Belief in output can be calculated at any time using one simple equation. Linguistic Output of DoB HEF . The heuristic model also converts inferred facts into discrete values as in Figure 2.