the more abstract a node, the bigger its conceptual importance.
- activation (A):
translate the fact that the node is activated or not (!)
- decay rate (DR):
Influences the quickness of deactivation of the node. By
default, depends on the number of incoming links and on the node
- agents (Ag):
agents that the node can launch in the coderack when its activation is
greater than an activation threshold. They generally have to identify or
to locate an instanciation of this node in the Blackboard. In the ECTOR case,
they'll have to select the appropriate answer to the user's input.
Each instanciation creation in the Blackboard implies the activation of its
father node (its activation is then maximal).
This instanciation also allows the diminution of the father's decay rate (divided
by the number of instanciations in the Blackboard -- plus one).