Struct Selection 

pub struct Selection {
    pub hits: Vec<u64>,
    pub effective_lambda: Vec<f64>,
    pub sample_size: u64,
    pub eps_sum: f64,
    pub corrected_unit: Option<usize>,
    pub adjusted_crossings: usize,
    pub max_adjustment: f64,
}

The outcome of a pmr selection.

Fields

hits: Vec<u64>

Realised hits per unit, in list order. Always the floor or the ceiling of the unit’s effective expected hits, and summing exactly to the sample size.

effective_lambda: Vec<f64>

The expected hits the selection actually used, after the floating-point drift was assigned. These are the denominators of the sampling weights.

sample_size: u64

The integer sample size the expected hits summed to.

eps_sum: f64

The floating-point drift between the sum of expected hits and the sample size, before it was assigned.

corrected_unit: Option<usize>

The unit (list position) that absorbed the drift, if any was needed.

adjusted_crossings: usize

How many crossings sat within [TAU] of an integer boundary and were settled by borrowing from the units that follow.

max_adjustment: f64

The largest absolute difference between a unit’s effective and nominal expected hits.

Trait Implementations

impl Clone for Selection

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Selection

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

Formats the value using the given formatter.