235@2020@IJCAI

Total: 1

#1 A Logic of Directions [PDF] [Copy] [Kimi] [REL]

Authors: Heshan Du ; Natasha Alechina ; Anthony G. Cohn

We propose a logic of directions for points (LD) over 2D Euclidean space, which formalises primary direction relations east (E), west (W), and indeterminate east/west (Iew), north (N), south (S) and indeterminate north/south (Ins). We provide a sound and complete axiomatisation of it, and prove that its satisfiability problem is NP-complete.