Repeated variable in TreeADD and its states

[Manuel Luque]

I don't know whether TreeADDs are defined to allow a variable to appear several times in a same path from the root to a leaf. In the attached network, the GUI has allowed to build a TreeADD as appearing in the image below, where some branches are not consistent in the state values of variable A.

[Francisco Javier Díez]

It does not make sense to have a node with only one outgoing branch, but currently OpenMarkov does not forbid it, in order to facilitate the edition of trees. It does make sense that a node appears more than once in a tree--see Figure 6 in http://www.cisiad.uned.es/techreports/ProbModelXML.pdf. However, the third A node in your figure, with states "high, medium, low", lying on the "high" branch of the second A node is clearly incorrect; OpenMarkov should never permit it.