Struct DefaultGlobalPivotFinder 

pub struct DefaultGlobalPivotFinder {
    pub nsearch: usize,
    pub max_nglobal_pivot: usize,
    pub tol_margin: f64,
}

Default global pivot finder using random search with local optimization.

Algorithm:

1. Generate nsearch random initial points.
2. For each point, sweep all dimensions and pick the index with the largest interpolation error at each position.
3. Keep points where the error exceeds abs_tol * tol_margin.
4. Return at most max_nglobal_pivot results.

Examples

use tensor4all_tensorci::DefaultGlobalPivotFinder;

// Default configuration
let finder = DefaultGlobalPivotFinder::default();
assert_eq!(finder.nsearch, 5);
assert_eq!(finder.max_nglobal_pivot, 5);
assert!((finder.tol_margin - 10.0).abs() < 1e-15);

// Custom configuration
let custom = DefaultGlobalPivotFinder::new(20, 10, 5.0);
assert_eq!(custom.nsearch, 20);
assert_eq!(custom.max_nglobal_pivot, 10);
assert!((custom.tol_margin - 5.0).abs() < 1e-15);

Fields

nsearch: usize

Number of random initial points to search from

max_nglobal_pivot: usize

Maximum number of pivots to add per iteration

tol_margin: f64

Search for pivots with error > abs_tol × tol_margin

Implementations

impl DefaultGlobalPivotFinder

pub fn new(nsearch: usize, max_nglobal_pivot: usize, tol_margin: f64) -> Self

Create a new DefaultGlobalPivotFinder with the given parameters.

Trait Implementations

impl Clone for DefaultGlobalPivotFinder

fn clone(&self) -> DefaultGlobalPivotFinder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DefaultGlobalPivotFinder

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

Formats the value using the given formatter.

impl Default for DefaultGlobalPivotFinder

fn default() -> Self

Returns the “default value” for a type.

impl GlobalPivotFinder for DefaultGlobalPivotFinder

fn find_global_pivots<T, F>( &self, input: &GlobalPivotSearchInput<T>, f: &F, abs_tol: f64, rng: &mut impl Rng, ) -> Vec<MultiIndex>

where T: Scalar + TTScalar, F: Fn(&MultiIndex) -> T,

Find multi-indices with high interpolation error.