Struct SequencingWithReleaseTimesAndDeadlines 

pub struct SequencingWithReleaseTimesAndDeadlines { /* private fields */ }

Sequencing with Release Times and Deadlines.

Given a set of n tasks, each with a processing time l(t), release time r(t), and deadline d(t), determine whether there exists a one-processor schedule where each task starts no earlier than its release time and finishes by its deadline, with no two tasks overlapping.

Representation

Uses a permutation encoding (Lehmer code), where config[i] selects which remaining task to schedule next from the pool of unscheduled tasks. dims() = [n, n-1, ..., 2, 1]. Tasks are scheduled left-to-right: each task starts at max(release_time, current_time). The schedule is feasible iff every task finishes by its deadline.

Example

use problemreductions::models::misc::SequencingWithReleaseTimesAndDeadlines;
use problemreductions::{Problem, BruteForce};

let problem = SequencingWithReleaseTimesAndDeadlines::new(
    vec![1, 2, 1],
    vec![0, 0, 2],
    vec![3, 3, 4],
);
let solver = BruteForce::new();
let solution = solver.solve(&problem).unwrap();
assert!(solution.is_some());

Implementations

impl SequencingWithReleaseTimesAndDeadlines

pub fn new( lengths: Vec<i64>, release_times: Vec<i64>, deadlines: Vec<i64>, ) -> Self

Create a new instance.

Panics

Panics if the three vectors have different lengths.

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

Returns the processing times.

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

Returns the release times.

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

Returns the deadlines.

pub fn num_tasks(&self) -> usize

Returns the number of tasks.

pub fn time_horizon(&self) -> i64

Returns the time horizon (maximum deadline).

pub fn time_horizon_bits(&self) -> u64

Magnitude bits of the maximum deadline, with at least one bit.

Trait Implementations

impl BruteForceProblem for SequencingWithReleaseTimesAndDeadlines

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 SequencingWithReleaseTimesAndDeadlines

fn clone(&self) -> SequencingWithReleaseTimesAndDeadlines

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SequencingWithReleaseTimesAndDeadlines

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

Formats the value using the given formatter.

impl DeclaredVariant for SequencingWithReleaseTimesAndDeadlines

impl<'de> Deserialize<'de> for SequencingWithReleaseTimesAndDeadlines

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Problem for SequencingWithReleaseTimesAndDeadlines

const NAME: &'static str = "SequencingWithReleaseTimesAndDeadlines"

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

type Solution = Vec<usize>

Mathematical witness type for this problem.

type Value = Or

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<Or, EvaluationError>

Evaluate the problem on a solution.

fn problem_type() -> ProblemType

Look up this problem’s catalog entry.

impl ReduceTo<ILP<i64, i64, Bounded>> for SequencingWithReleaseTimesAndDeadlines

type Result = ReductionSWRTDToBoundedILP

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<ILP> for SequencingWithReleaseTimesAndDeadlines

type Result = ReductionSWRTDToILP

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<SequencingWithReleaseTimesAndDeadlines> for ThreePartition

type Result = ReductionThreePartitionToSRTD

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 SequencingWithReleaseTimesAndDeadlines

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

where __S: Serializer,

Serialize this value into the given Serde serializer.