Struct Transition 

pub struct Transition {
    pub source_id: i32,
    pub target_id: i32,
    pub probability: f64,
    pub annual_discount_rate_override: Option<f64>,
}

A single transition in the policy graph, representing a directed edge from one stage to another with an associated probability and optional discount rate override.

Transitions define the stage traversal order for both the forward and backward passes. In finite horizon mode, transitions form a linear chain. In cyclic mode, at least one transition creates a back-edge (source_id >= target_id).

Source: stages.json policy_graph.transitions[]. See Input Scenarios §1.2.

Fields

source_id: i32

Source stage ID. Must exist in the stage set.

target_id: i32

Target stage ID. Must exist in the stage set.

probability: f64

Transition probability. Outgoing probabilities from each source must sum to 1.0 (within tolerance).

annual_discount_rate_override: Option<f64>

Per-transition annual discount rate override. When None, the global annual_discount_rate from the PolicyGraph is used. When Some(r), this rate is converted to a per-transition factor using the source stage duration: d = 1 / (1 + r)^dt. See Discount Rate §3.

Trait Implementations

impl Clone for Transition

fn clone(&self) -> Transition

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Transition

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Transition

fn eq(&self, other: &Transition) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Transition

impl StructuralPartialEq for Transition