learned that "conditional pattern base" in FP-growth algorithm refers to the set of prefix paths of a node, but it is puzzling why the name "conditional pattern base" is chosen. What does "conditional model base" mean?
learned that "conditional pattern base" in FP-growth algorithm refers to the set of prefix paths of a node, but it is puzzling why the name "conditional pattern base" is chosen. What does "conditional model base" mean?
1. A conditional pattern base is a collection of paths that end with the item of the element you are looking for. In short, a prefix path is everything between the element you are looking for and the root node of the tree.
for example: i3 appears three times in the FP tree, and its ancestral paths are {I2Magi I1VRO 2}, {I2RO 2} and {I1RO 2}, respectively. The set of these three ancestral paths is the conditional pattern base of frequent item i3.
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