Direct Construction of Minimal Acyclic Subsequential Transducers

This paper presents an algorithm for direct building of minimal acyclic subsequential transducer, which represents a finite relation given as a sorted list of words with their outputs. The algorithm constructs the minimal transducer directly without constructing intermediate tree-like or pseudo-minimal transducers. In NLP applications our algorithm provides significantly better efficiency than the other algorithms building minimal transducer for large-scale natural language dictionaries. Some experimental comparisons are presented at the end of the paper