Anytime column search

  • Authors:
  • Satya Gautam Vadlamudi;Piyush Gaurav;Sandip Aine;Partha Pratim Chakrabarti

  • Affiliations:
  • Indian Institute of Technology Kharagpur, Kharagpur, WB, India;Indian Institute of Technology Kharagpur, Kharagpur, WB, India;Carnegie Mellon University, Pittsburgh, PA;Indian Institute of Technology Kharagpur, Kharagpur, WB, India

  • Venue:
  • AI'12 Proceedings of the 25th Australasian joint conference on Advances in Artificial Intelligence
  • Year:
  • 2012

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Abstract

Anytime heuristic search algorithms are widely applied where best-first search algorithms such as A* require large or often unacceptable amounts of time and memory. Anytime algorithms produce a solution quickly and iteratively improve the solution quality. In this paper, we propose novel anytime heuristic search algorithms with a common underlying strategy called Column Search. The proposed algorithms are complete and guarantee to produce an optimal solution. Experimental results on sliding-tile puzzle problem, traveling salesman problem, and robotic arm trajectory planning problem show the efficacy of proposed methods compared to state-of-the-art anytime heuristic search algorithms.