Fig. 1

Illustration of the structure of a suffix and probabilistic suffix tree for the string CACAC. The ’-’ character is used to denote the end of the string. We illustrate implicit nodes (nodes with a single child, can be collapsed with a longer edge) as dashed circles. The dotted edges in the suffix tree illustrate the suffix links, which in the reverse direction are the edges of the probabilistic suffix tree. The full node label is included for clarity, and is not stored in each node in the tree