Fully retroactive approximate range and nearest neighbor searching

  • Authors:
  • Michael T. Goodrich;Joseph A. Simons

  • Affiliations:
  • Department of Computer Science, University of California, Irvine;Department of Computer Science, University of California, Irvine

  • Venue:
  • ISAAC'11 Proceedings of the 22nd international conference on Algorithms and Computation
  • Year:
  • 2011

Quantified Score

Hi-index 0.00

Visualization

Abstract

We describe fully retroactive dynamic data structures for approximate range reporting and approximate nearest neighbor reporting. We show how to maintain, for any positive constant d, a set of n points in ℝd indexed by time such that we can perform insertions or deletions at any point in the timeline in O(logn) amortized time. We support, for any small constant ε0, (1+ε)-approximate range reporting queries at any point in the timeline in O(logn+k) time, where k is the output size. We also show how to answer (1+ε)-approximate nearest neighbor queries for any point in the past or present in O(logn) time.