This organizer groups the Method > Bidirectional Diffusion subsection: the adaptive per-query depth controller that sets ancestor depth $d_\uparrow$ and descendant depth $d_\downarrow$ from the top dense seed's hierarchy level $\ell(v^\star)$ and the top-vs-fifth contrast $\Delta = s_1 - s_5$, the deterministic upward and downward BFS traversals from the dense seeds, the hop-penalized path scores with additive penalties $\delta$ and $\delta_{\text{child}}$, the max-aggregation final node score $S(v)$, and the main-experiment hyperparameter settings.