Fast Construction of the Radio Map Based on the Improved Low-Rank Matrix Completion and Recovery Method for an Indoor Positioning System

Table 1

Completion errors of different algorithms.

Algorithm	Err (dBm)
Low-rank completion	9.83
Improved low-rank completion	6.52
Spline interpolation ()	25.48
Spline interpolation ()	11.69
Spline interpolation (0.0)	50.13