Location of Repository

Generating Strings at Random from a Context Free Grammar

By Bruce McKenzie


Given a context free grammar #CFG# G and an integer n #= 0 we present an algorithm for generating strings derivable from the grammar of length n such that all strings of length n are equally likely. The algorithm requires a pre-processing stage which calculates the number of strings of length k#= n derivable from each postfix # where A ! ## is a production from the grammar. This step requires O#n 2 # time and O#n 2 # space. The subsequent string generation step uses these counts to generate a string in O#n# time and O#n# space

Topics: Key words, Analysis of algorithms, Context-free languages, Uniform random
Year: 1997
OAI identifier: oai:CiteSeerX.psu:
Provided by: CiteSeerX
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://citeseerx.ist.psu.edu/v... (external link)
  • http://www.cosc.canterbury.ac.... (external link)
  • Suggested articles

    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.