Struct ClosestString 

pub struct ClosestString { /* private fields */ }

The Closest String problem.

Given a finite alphabet Sigma = {0, ..., q - 1} and n input strings s_1, ..., s_n in Sigma^m (all of common length m), find a center string c in Sigma^m minimizing

max_{1 <= i <= n} d_H(c, s_i),

where d_H is the Hamming distance. Every center in the discrete cube is syntactically feasible; the objective is its worst-case Hamming distance to the input strings.

Implementations

impl ClosestString

pub fn new(alphabet_size: usize, strings: Vec<Vec<usize>>) -> Self

Create a new ClosestString instance.

Panics

Panics if:

• strings is empty (the problem requires at least one input string),
• input strings do not all have the same length,
• alphabet_size == 0 while any input string is non-empty,
• any symbol in any input string is >= alphabet_size.

pub fn alphabet_size(&self) -> usize

Returns the alphabet size q.

pub fn strings(&self) -> &[Vec<usize>]

Returns the input strings.

pub fn num_strings(&self) -> usize

Returns the number of input strings n.

pub fn string_length(&self) -> usize

Returns the common string length m.

pub fn total_length(&self) -> usize

Returns the total input length num_strings * string_length.

Trait Implementations

impl Clone for ClosestString

fn clone(&self) -> ClosestString

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ClosestString

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ClosestString

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Problem for ClosestString

const NAME: &'static str = "ClosestString"

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

type Value = Min<i64>

The evaluation value type.

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

Returns variant attributes derived from type parameters.

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

Configuration space dimensions. Each entry is the cardinality of that variable.

fn evaluate(&self, config: &[usize]) -> Min<i64>

Evaluate the problem on a configuration.

fn num_variables(&self) -> usize

Number of variables (derived from dims).

fn problem_type() -> ProblemType

Look up this problem’s catalog entry.

impl ReduceTo<ILP<i32>> for ClosestString

type Result = ReductionClosestStringToILP

The reduction result type.

fn reduce_to(&self) -> Self::Result

Reduce this problem to the target problem type.

impl Serialize for ClosestString

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl DeclaredVariant for ClosestString