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Directed Acyclic Word Graph (DAWG) allows to store huge strings set in compacted form

Project Description

pyDAWG implements DAWG structure. Testing if word is present in a set has complexity O(n), where n is length of tested string.

Algorithm used to build DAWG is incremental, memory overhead during graph construction is small.

Module supports also minimal perfect hashing — it is possible to get unique number for any word from a set, or find which word has assigned given number. This makes possible to use DAWG as a dictionary.

The module has been written in C. There is also a pure python version providing most of C version functionality.

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