pqgrams (cargo): This package implements a basic version of the PQ-Grams tree-edit-distance approximation algorithm, as generically as possible. It defines traits that you can define for your label-types and tree-types, to use custom types with the algorithm. It also defines a basic generic Tree type for string or integer leaf types that is easy to build with, and compatible with the algorithm.
Keywords: tree|distance|pq-grams|approximate|matching