Path-planning is a well-known studied problem in Artificial Intelligence. Given two points in a map;
path-planning algorithms search for a path that joins those two points;
avoiding obstacles. It is a challenging problem with important practical applications in a wide range of applications: autonomous mobile robotics;
logistics or video games;
just to mention some of them. Given its importance;
it has attracted much research;
resulting in a large number of algorithms;
some classical;
such as A∗;
other more specialized;
such as swarms. However;
despite all the literature dedicated to this problem;
the statistics used to analyze experimental results in most cases are naïve. In this paper;
we position in favor of the need of incorporating stronger statistical methods in path-planning empirical research and promote a debate in the research community. To this end;
we analyze some 2D-grid classical path-planning algorithms in discrete domains (i.e. A∗ and A∗ with post-processing) and more recent algorithms in continuous domains (i.e. Theta∗ and S-Theta∗). Given the differences of these algorithms;
we study them under different criteria: Run-time;
number of heading changes;
number of expanded vertices and path-length. © The British Computer Society 2014. All rights reserved;