So this is just a specification of all the possible inputs ?
Yep. And , all the possible outputs , too. So , we have , um , for example , the , uh , Go - there decision node
OK.
which has two elements , going - there and its posterior probability , and not - going - there and its posterior probability , because the output is always gonna be all the decision nodes and all the  the  a all the posterior probabilities for all the values.