fig2

Figure 2. The performance of three SR methods, namely E2E, DSO, and uDSR, on six datasets. (A) R², (B) $$ \frac{1}{1+exp(-Z_{score}(NED))} $$. For both of the indicators, a larger value indicates a superior performance. SR: Symbolic regression; E2E: end-to-end symbolic regression; DSO: deep symbolic optimization; uDSR: unified deep symbolic regression; R²: coefficient of determination; NED: normalized edit distance.