Applying Hierarchical Bayesian Neural Network in Failure Time Prediction

Table 2

Covariance matrix of the distribution of heterogeneity.

Estimated parameter	Posterior Mean	Posterior STD
𝑉𝛽	0.0430.0160.0230.0210.0230.0010.0090.0440.0290.0500.0240.0200.0230.0180.0060.041	0.00430.00240.00440.00060.00510.00220.00440.00510.00300.00090.00400.00300.00390.00030.00010.0033
𝑉𝜛𝑚=1	0.0620.0220.0440.0740.0530.0160.0330.0460.063	0.0090.0130.0380.0550.0390.0680.0510.0060.018
𝑉𝜛𝑚=2	0.1440.0510.0200.0260.0030.0240.0810.0430.099	0.0330.0210.0280.0060.0110.0570.0660.0120.069
𝑉𝜛𝑚=3	0.0750.0050.0330.0360.0760.0010.0200.0450.073	0.0710.0160.0340.0290.0010.0570.0620.0020.078