Corpus ID: 208857534

Pinning Down the Strong Wilber 1 Bound for Binary Search Trees

  title={Pinning Down the Strong Wilber 1 Bound for Binary Search Trees},
  author={Parinya Chalermsook and Julia Chuzhoy and Thatchaphol Saranurak},
  • Parinya Chalermsook, Julia Chuzhoy, Thatchaphol Saranurak
  • Published 2019
  • Mathematics, Computer Science
  • ArXiv
  • The famous dynamic optimality conjecture of Sleator and Tarjan from 1985 conjectures the existence of an $O(1)$-competitive algorithm for binary search trees (BST's). Even the simpler problem of (offline) approximation of the optimal cost of a BST for a given input, that we denote by $OPT$, is still widely open, with the best current algorithm achieving an $O(\log\log n)$-approximation. A major challenge in designing such algorithms is to obtain a tight lower bound on $OPT$ that is algorithm… CONTINUE READING


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