What Determines Difficulty of Transport Puzzles?

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Authors

PELÁNEK Radek JARUŠEK Petr

Year of publication 2011
Type Article in Proceedings
Conference Twenty-Fourth International Florida Artificial Intelligence Research Society Conference
MU Faculty or unit

Faculty of Informatics

Citation
Field Informatics
Keywords computational model; human problem solving; transport puzzles; Sokoban; state spaces; difficulty; evaluation
Description What determines difficulty of solving a problem? Although this question has been studied before, we found examples which show large differences in problem difficulty which are not explained by concepts identified in previous research. This differences are caused mainly by the structure of a problems' state spaces and cannot be easily captured by static metrics like size of the state space or the length of a solution. To address these unexplained differences, we propose a computational model of human problem solving behaviour. We provide evaluation of the model over large scale dataset (hundreds of hours of problem solving, more than 100 problem instances) for three transport puzzles (Sokoban, Rush hour, and Replacement puzzle).
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