Scale-invariant random spatial networks. (English) Zbl 1305.90104

Aldous, David

Electron. J. Probab. 19, Paper No. 15, 41 p. (2014).

Summary: Real-world road networks have an approximate scale-invariance property; can one devise mathematical models of random networks whose distributions are exactly invariant under Euclidean scaling? This requires working in the continuum plane. We introduce an axiomatization of a class of processes we call “scale-invariant random spatial networks”, whose primitives are routes between each pair of points in the plane. We prove that one concrete model, based on minimum-time routes in a binary hierarchy of roads with different speed limits, satisfies the axioms, and note informally that two other constructions (based on Poisson line processes and on dynamic proximity graphs) are expected also to satisfy the axioms. We initiate study of structure theory and summary statistics for general processes in this class.

MSC:

90B20	Traffic problems in operations research
60D05	Geometric probability and stochastic geometry

Keywords:

Poisson process; scale invariance; spatial network