Overall ROI Lambda
Description
Overall ROI Lambda parameter defines the strength of the regularization loss on the average roi. It controls the loss which minimizes deviation in overall ROIs.
Tuning metrics
A combination metric defined as follows is used to find the suitable range for overall ROI lambda. The greater metric values are preferred.
\[ Combined\ Metric = (Non\ Negative\ R^2 * 1000) * (5 - ROI\ Variation)\]
Result
Following plots show the regions with high metric values -
Following plot shows plateau regions with suitable values for Overall ROI lambda based on combined metric.
Based on the above plot, suitable region for the parameter is [0.005,0.5].