Label Description
Continue Continue the search by taking another step in the
same direction and repeat the process.
Backtrack The initial direction chosen is predicted to have
been incorrect and there is unlikely to be a peak
in that direction. Return the lens to the position
The recorded tuples are then used
by a second decision tree Tβ with one of the three labels at each leaf :
“continue” or “backtrack”, “success”. Each label represents a possible
state transition: