Figure 1 shows the sensitivity set graph for the Asia network where
"Has lung cancer" is the hypothesis variable and "Dyspnoea=yes" is
observed.
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Figure 1: Sensitivity set graph with respect to "Has
lung cancer".
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In the network nodes are colored in three different ways: only white
nodes, only yellow nodes, and nodes with three colors (shades of blue,
red, and green).
- White specifies a node that is not in the sensitivity set of the
hypothesis node or a node with a conditional probability table with
almost no impact on the probability of the hypothesis.
-
Yellow specifies a node for which the computation of sensitivity
values failed, e.g., a node with a conditional probability table which
contains only extreme parameters (i.e., values zero and one).
- For nodes with three colors blue specifies the maximum sensitivity
value, red specifies the minimum sensitivity value, and green
specifies the average sensitivity value across all parameters of the
CPT of the node. The relative values of the maximum, minimum, and
average sensitivity values across all nodes are indicated by the
intensities of the colors.