Tootfinder

Compressing Suffix Trees by Path Decompositions
Ruben Becker, Davide Cenzato, Travis Gagie, Sung-Hwan Kim, Ragnar Groot Koerkamp, Giovanni Manzini, Nicola Prezza
https://arxiv.org/abs/2506.14734

Compressing Suffix Trees by Path Decompositions
In classic suffix trees, path compression works by replacing unary suffix trie paths with pairs of pointers to $T$, which must be available in the form of some random access oracle at query time. In this paper, we revisit path compression and show that a more careful choice of pointers leads to a new elegant, simple, and remarkably efficient way to compress the suffix tree. We begin by observing that an alternative way to path-compress the suffix trie of $T$ is to decompose it into a set of (di…