Figure 2

The result of a direct comparison of two decision trees is displayed. The resulting tree has a more complex structure than the input trees. When decision trees “A” and “B” are compared, the parameters can be followed from the left to the right to reach specific recommendations for every combination from each party. In the second combination of parameters seen from the top of the graph, party A would recommend an “Operation” whereas party B would recommend “Radiotherapy”. In the bottom row, both parties would recommend “Radiotherapy”.