Sequential Sampling and Estimation of Approximately Bandlimited Graph Signals

. 2021 Feb 19;21(4):1460. doi: 10.3390/s21041460

Algorithm 2 Sequential sampling and estimation of approximately bandlimited graph signals.

1:
Choose the first sampling node $s_{1}$ arbitrarily.
2:
for $t = 1, 2, \dots$ do
3:
Sample the vertex $s_{t}$ and obtain an observation $y_{t}$ .
4:
Update hyperparameters $α_{t}^{'}, γ_{t}^{'}, β_{t}^{'}$ and signal posterior $μ_{t}, C_{t}$ by EM as in Algorithm 1.
5:
Select the next node to sample $s_{t + 1}$ by US as in Equation (25).
6:
end for