Formally, we define the probability n (t) i of finding the particle at node n i ∈ V at time t as the sum of all ways in which the particle could have reached n i from any other node at the previous time-step: where P (n i | n j ) is the conditional probability of moving to n i given that the particle is at n j .
we construct the transition distribution such that P (n i | n j ) > 0 whenever WordNet specifies a local link relationship of the form j → i.