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Frontier nodes are interior nodes with leaf-nodes as children, typically being searched in depth-first algorithms at depth of 1. Following the definition of Ernst A. Heinz [1] [2], this is where futility pruning might be applied.

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References

  1. ^ Ernst A. Heinz (1998). Extended futility pruning. ICCA Journal, Vol. 21, No. 2, ps
  2. ^ Re: simple node definitions question by Robert Hyatt, CCC, September 13, 2004

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