Struct SequencingToMinimizeWeightedCompletionTime 

pub struct SequencingToMinimizeWeightedCompletionTime { /* private fields */ }

Sequencing to Minimize Weighted Completion Time problem.

Given tasks with nonnegative processing times l(t), weights w(t), and precedence constraints, find a single-machine schedule that respects the precedences and minimizes sum_t w(t) * C(t), where C(t) is the completion time of task t.

Configurations use Lehmer code with dims() = [n, n-1, ..., 1].

Implementations

impl SequencingToMinimizeWeightedCompletionTime

pub fn new( lengths: Vec<i64>, weights: Vec<i64>, precedences: Vec<(usize, usize)>, ) -> Self

Create a new sequencing instance.

Panics

Panics if lengths.len() != weights.len() or if any precedence endpoint is out of range.

pub fn num_tasks(&self) -> usize

Returns the number of tasks.

pub fn lengths(&self) -> &[i64]

Returns the processing times.

pub fn weights(&self) -> &[i64]

Returns the task weights.

pub fn precedences(&self) -> &[(usize, usize)]

Returns the precedence constraints.

pub fn num_precedences(&self) -> usize

Returns the number of precedence constraints.

Trait Implementations

impl BruteForceProblem for SequencingToMinimizeWeightedCompletionTime

fn dimensions(&self) -> Vec<usize>

Cardinality of each coordinate in the brute-force search space.

fn num_variables(&self) -> usize

Number of coordinates in the brute-force search space.

impl Clone for SequencingToMinimizeWeightedCompletionTime

fn clone(&self) -> SequencingToMinimizeWeightedCompletionTime

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SequencingToMinimizeWeightedCompletionTime

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

Formats the value using the given formatter.

impl DeclaredVariant for SequencingToMinimizeWeightedCompletionTime

impl<'de> Deserialize<'de> for SequencingToMinimizeWeightedCompletionTime

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Problem for SequencingToMinimizeWeightedCompletionTime

const NAME: &'static str = "SequencingToMinimizeWeightedCompletionTime"

Base name of this problem type (e.g., “MaximumIndependentSet”).

type Solution = Vec<usize>

Mathematical witness type for this problem.

type Value = Min<i64>

The evaluation value type.

fn parameter_names() -> &'static [&'static str]

Canonical parameter names for this problem model.

fn parameters(&self) -> ProblemParameters

Measure the complete canonical parameters of this concrete instance.

fn variant() -> Vec<(&'static str, &'static str)>

Returns variant attributes derived from type parameters.

fn evaluate(&self, config: &Self::Solution) -> Result<Min<i64>, EvaluationError>

Evaluate the problem on a solution.

fn problem_type() -> ProblemType

Look up this problem’s catalog entry.

impl ReduceTo<ILP<i64>> for SequencingToMinimizeWeightedCompletionTime

type Result = ReductionSTMWCTToILP

The reduction result type.

fn reduce_to(&self) -> Result<Self::Result, ReductionError>

Reduce this problem to the target problem type.

fn target_construction(error: ConstructionError) -> ReductionError

where Self: Sized,

Attach this reduction edge to a target-construction failure.

fn exact_i64( value: usize, operation: impl Into<String>, ) -> Result<i64, ReductionError>

where Self: Sized,

Convert a structural count used by the target’s exact integer algebra.

impl ReduceTo<SequencingToMinimizeWeightedCompletionTime> for OptimalLinearArrangement<SimpleGraph>

type Result = ReductionOLAToSequencingToMinimizeWeightedCompletionTime

The reduction result type.

fn reduce_to(&self) -> Result<Self::Result, ReductionError>

Reduce this problem to the target problem type.

fn target_construction(error: ConstructionError) -> ReductionError

where Self: Sized,

Attach this reduction edge to a target-construction failure.

fn exact_i64( value: usize, operation: impl Into<String>, ) -> Result<i64, ReductionError>

where Self: Sized,

Convert a structural count used by the target’s exact integer algebra.

impl Serialize for SequencingToMinimizeWeightedCompletionTime

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.