Path-equivalent removals of ε-transitions in a genomic weighted finite automaton

Abstract

Weighted finite automata (WFA) are used with accelerating hardware to scan large genomic banks. Hardwiring such automata raise surface area and clock frequency constraints, requiring efficient ε-transitions-removal techniques. In this paper, we present new bounds on the number of new transitions for several ε-transitions-removal problems. We study the case of acyclic WFA. We introduce a new problem, the partial removal of ε-transitions while accepting short chains of ε-transitions. © Springer-Verlag Berlin Heidelberg 2006.