Measures

phypanda provides three diversity measures, each available as a module-level singleton (pp.all_paths, pp.max_tree, pp.min_tree). All implement the DiversityMeasure protocol. Stubs that raise NotImplementedError exist for pp.tree, pp.network, and pp.average_tree.

Measure	Description	Fixed-set scoring	Budgeted optimization
All-paths PD (MAPPD)	All-paths diversity (MAPD) — edges on any root-to-leaf path	yes	yes (nsw_fpt_budget, esw_fpt)
Max-tree PD	Max PD over all displayed trees — upper bound on network PD	not yet	yes (nsw_fpt)
Min-tree PD	Min PD over all displayed trees — lower bound on network PD	yes	not yet
Tree PD (stub), Network PD (stub), Average-tree PD (stub)	Standard tree PD and other objectives (stubs)	not yet	not yet

• All-paths PD (MAPPD)
• Max-tree PD
• Min-tree PD
• Tree PD (stub)
• Network PD (stub)
• Average-tree PD (stub)