The expected number of runs in a word

  title={The expected number of runs in a word},
  author={Simon J. Puglisi and Jamie Simpson},
  journal={Australasian J. Combinatorics},
A word is a sequence of symbols taken from a (usually finite) alphabet. A run of period p in a word x is a factor x[m..n] such that n−m ≥ p and x[i] = x[i+p] for all i satisfying m ≤ i < i+p ≤ n, and such that this does not hold if m is replaced by a smaller integer or n by a larger one. The number of runs in words has been a subject of interest in recent years, particularly because of connections with data compression. In this paper we investigate the expected number of runs per unit length in… CONTINUE READING

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