For open-loop experiments described in Figure 5, the LED intensity was updated based on a predefined temporal function.
Katakis et al. [7] proposed that distance of recent vector in the pool is less than a predefined threshold, the classifier will update correspondingly by instances of the lately window, or a new model is saved.
During time instant t+1, each sensor j within the subset (mathcal {S}_{rho _{ell },t}) will keep updating their location until the cost function in (19) is not reduced more than a predefined threshold ε within two consecutive updating steps κ,κ+1.
Each time the state of a node is updated, the logical function determining its state is selected according to a predefined probability.
The iteration stops when (varepsilon ) lower than a predefined threshold or after a certain number of update times.
This schedule can be updated by the request of a reporting node when its queue size approaches a predefined threshold.
When compared with the linear, one-step DOT as presented here, non-linear DOT reconstruction has the added benefit of iteratively updating the recovered chromophore concentrations simultaneously with a minimization function until the solution finally converges to a predefined threshold.
If the dot product of the displacement and the normalized acceleration, ( l = r · a/|a| ), is above a predefined threshold ( lmin ), the direction of the acceleration for the next Δt interval will be updated to the direction of the displacement; otherwise, a is updated with a randomly chosen direction.
If the distance to the nearest cluster is below a predefined threshold, the current ligature is added to the respective cluster and the cluster mean is updated.
When the depth of a node has changed or the traffic loading variation reaches a predefined threshold, and the elapsed time also exceeds an LIT after the last successful update message, the node will also send a new one.
