A novel methodology to estimate a measurement of the inherent difficulty of an indoor localization radio map

This paper presents a novel methodology to obtain a measure of the difficulty of a scenario to obtain accurate localization results when testing an indoor positioning method. The variables used to measure indoor localization methods' accuracy are strongly dependent on the radio map used to test them. This makes it hard to compare different methods' performance. The proposed RMID indicator can be used to obtain a difficulty measure from a fingerprinting data set. This indicator will show if the precision obtained with a positioning method, using that data set, can be considered a reliable measurement of the method performance, by estimating the inherent difficulty of the radio map on which the accuracy has been reported.