Linear encoding scheme for weighted finite automata

  • Authors:
  • Mathieu Giraud;Dominique Lavenier

  • Affiliations:
  • IRISA / CNRS / Université de Rennes 1, Rennes, France;IRISA / CNRS / Université de Rennes 1, Rennes, France

  • Venue:
  • CIAA'04 Proceedings of the 9th international conference on Implementation and Application of Automata
  • Year:
  • 2004

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Abstract

In this paper, we show that the linear encoding scheme efficiently implements weighted finite automata (WFA). WFA with t transitions can be hardwired with $\mathcal{O}$(t) cells. They solve pattern matching problems in a pipelined way, parsing one character every clock cycle. With the massive parallelism of reconfigurable processors like FPGAs, a significant speed-up is obtained against software solutions.