IWKNN: An Effective Bluetooth Positioning Method Based on Isomap and WKNN

Table 3

The positioning error of original and Isomap enhanced methods.

Method	Max error (m)	Mean error (m)	Min error (m)	Std error (m)	≤2 m (%)
WKNN	7.000	1.505	0.0008	0.772	73.99%
IWKNN	5.046	1.481	0.0005	0.758	75.58%
WKNN	6.558	1.508	0.001	0.732	74.49%
IWKNN	7.110	1.463	0.002	0.710	76.05%
WKNN	6.803	1.541	0.014	0.712	76.12%
IWKNN	6.162	1.478	0.036	0.693	78.96%
WKNN	6.045	1.581	0.002	0.707	71.45%
IWKNN	5.216	1.512	0.011	0.680	77.08%
WKNN	5.774	1.631	0.023	0.703	69.18%
IWKNN	5.273	1.558	0.041	0.674	74.27%
WKNN	5.135	1.689	0.023	0.721	65.50%
IWKNN	5.138	1.604	0.066	0.683	70.77%
WKNN	5.447	1.749	0.019	0.739	61.51%
IWKNN	4.994	1.660	0.032	0.703	67.14%
EWKNN	7.000	1.502	0.002	0.756	74.26%
IEWKNN	5.046	1.477	0.0005	0.743	76.04%