Link
A link in a Bbn defines a causal arrow from one chance node (discrete or continuous) to another.
In an influence diagram a link can
mean one of three things:
- It can be a causal arrow as in a pure
Bbn. This is the case, when the arrow goes from a chance node or
decision node to a chance node.
- It can define the utility function to depend on a chance node or
a decision node. This is the case if the arrow goes from a chance node
or decision node to a utility node.
- It can define the order of the decision nodes (See the Decision Node section for more about the
order of decision nodes). This is the case if the arrow goes from a
chance node or decision node to a decision node.
A link can be established in edit mode by
activating the link tool and dragging a line
from one node to another.
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