Definition. Convergence stopping rule [ftip-00F2]

Fix tolerance \(\epsilon >0\), score range \(R>0\), patience \(P\geq 1\), and maximum depth \(D\). A linear recursive run stops when no emitted layer improves the mean score by more than \(\epsilon R\) for \(P\) consecutive layers, or when the driver emits empty code, or when depth \(D\) is reached.