This package contains the implementation of zigzag, an algorithm for the Smallest grammar problem

The zigzag algorithm and the Minimal Grammar Parsing are described (among other things) in the following publications:

• Choosing Word Occurrences for the Smallest Grammar Problem. Rafael Carrascosa, François Coste, Matthias Gallé, Gabriel G. Infante López. LATA 2010.
• The Smallest Grammar Problem as Constituents Choice and Minimal Grammar Parsing. Rafael Carrascosa, François Coste, Matthias Gallé, Gabriel G. Infante López. Algorithms vol 4.
• Searching for smallest grammars on large sequences and application to DNA. Rafael Carrascosa, François Coste, Matthias Gallé, Gabriel G. Infante López. J. Discrete Algorithms vol 11.

A small disclaimer: I used this code to get my degree (was written fast) and I didn't knew much python at the time... so it might be a little messy.