On the Consecutive-Retrieval Problem

  • Authors:
  • R. Swaminathan;Donald K. Wagner

  • Affiliations:
  • -;-

  • Venue:
  • SIAM Journal on Computing
  • Year:
  • 1994

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Abstract

A $\{0,1\}$-matrix $M$ has the consecutive-retrieval property if there exists a tree $T$ such that the vertices of $T$ are indexed on the rows of $M$ and the columns of $M$ are the incidence vectors of the vertex sets of paths of $T$. If such a $T$ exists, then $T$ is a realization for $M$. In this paper, an $O(r^2c)$ algorithm is presented to determine whether a given standard, $r \times c$ matrix has the consecutive-retrieval property and, if so, to construct a realization.