An Efficient Algorithm for Determine the Length of the Longest Dead Path in an "LIFO" Branch-and-bound Exploration Schema

The length of the longest dead path (LLDP) is a widely used parameter in estimating the efficiency of branch-and-bound optimization algorithms that employ the LIFO exploration schema. Thanks to two original theorems, we are able to present a particularly attractive procedure for determining of the L...

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Bibliographic Details
Main Authors: Pallottino, Stefano, Toffoli, Tommaso
Published: 2023
Online Access:https://hdl.handle.net/1721.1/148976
Description
Summary:The length of the longest dead path (LLDP) is a widely used parameter in estimating the efficiency of branch-and-bound optimization algorithms that employ the LIFO exploration schema. Thanks to two original theorems, we are able to present a particularly attractive procedure for determining of the LLDP. In fact, this procedure requires a number of storage variables which is independent of problem size and very small; moreover, the procedure is self-contained in the sense that it can be externally attached to any LIFO branch-and-bound program without interfering with its algorithms and data structures.