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netweaver:nodes:union

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Description

The union node is used to aggregate values without the prejudice inflicted by using the AND node the liberality of the OR node. It performs a weighted average of its child-nodes.

Constraints

  • Minimum number of child-nodes: 0
  • Maximum number of child-nodes: no limit

Calculus

The union node calculates the weighted average of its child-nodes. Weight is a node property that has meaning in only some situations. By default its value is 1, but can be changed to any numeric value.

value={sum{i=1}{n}{{value_i}*{weight_i}}}/{sum{i=1}{n}{weight_i}}