We present a robot, InductoBeast, that greets a new office building by lear
ning the floorplan automatically, with minimal human intervention and a pri
ori knowledge. Our robot architecture is unique because it combines aspects
of both abductive and inductive mapping methods to solve this problem. We
present experimental results spanning three ofiice environments, mapped and
navigated during normal business hours. We hope these results help to esta
blish a performance benchmark against which robust and adaptive mapping rob
ots of the future may be measured.