Figure 2
HuPSON hierarchy plugged into BFO. HuPSON class hierarchy depicting classes biomedical computer simulation, algorithm, equation, model and related classes inside the BFO hierarchy, displayed with OBO Graph View [18] inside Protégé; blue arrows diplaying “i”: subclass relations; light blue; has_part_simstep; light green: mathematically_describes; green: has_part_equation; yellow: uses; orange: is_mathematically_described_by; brown: application_generates; light violet: is_performed_on; violet: is_param_used_in (bottom)/solves_equation (top).