# NetWeaver Help

### Site Tools

netweaver:nodes:xor

# Description

The XOR node is an exclusive OR. It is true only when only one child-node is true and the rest are false. The XOR uses a fuzzy algorithm to determine how true it is when there is missing data or levels of trueness. The return value is the “logical distance” between the two most true nodes. The minimum distance possible is 0, indicating that both nodes have the same value and therefore the XOR would be false. The maximum distance occurs when one node is fully true and others are fully false resulting in a value of true for the XOR node.

# Constraints

• Minimum number of child-nodes: 0
• Maximum number of child-nodes: no limit
• Valid input range: -1 to +1 (false to true)

# Calculus

The XOR node's value is calculated by offsetting the difference between its two most true child-nodes.

value = -1 + valuemax1 - valuemax2

where

• max1 = the most true child-node
• max2 = the second most true child-node

# Examples

Where A and B are child-nodes of the XOR node:

valueA valueB XOR value
true true false
undetermined undetermined false
false false false
true undetermined undetermined
undetermined true undetermined
undetermined false undetermined
false undetermined undetermined
true false true
false true true

Where A,B,C, and D are child-nodes of the XOR node:

valueA valueB valueC valueD XOR value
true true any value any value false
false false false false false
true undetermined false false undetermined
true false false false true
false true false false true
false false true false true
false false false true true