An Indoor Positioning Algorithm for Wearable Device Using Deep Learning Regression Prediction Model in IoT Applications

Table 3

Comparison of positioning accuracy of activation functions of different hidden layers.

The activation function	Relu	Sigmoid	Tanh
Mean positioning error (m)	0.2716	0.2158	0.1796
The error is less than 0.25 m registration point (%)	35	56	76