Finding Hidden Independent Sets in Interval Graphs

We design efficient competitive algorithms for discovering hidden information using few queries. Specifically, consider a game in a given set of intervals (and their implied interval graph G) in which our goal is to discover an (unknown) independent set X by making the fewest queries of the form “Is point p covered by an interval in X?” Our interest in this problem stems from two applications: experimental gene discovery with PCR technology and the game of Battleship (in a 1-dimensional setting). We provide adaptive algorithms for both the verification scenario (given an independent set, is it X?) and the discovery scenario (find X without any information). Under some assumptions, these algorithms use an asymptotically optimal number of queries in every instance.

• Type: Conference
• Year: 2003
• Where: COCOON
• Authors: Therese C. Biedl, Brona Brejová, Erik D. Demaine, Angèle M. Hamel, Alejandro López-Ortiz, Tomás Vinar
• Keywords: COCOON 2003, Efficient Competitive Algorithms, Independent Set, Interval Graph G