Struct SvmParameter 

pub struct SvmParameter {

    pub svm_type: SvmType,
    pub kernel_type: KernelType,
    pub degree: i32,
    pub gamma: f64,
    pub coef0: f64,
    pub cache_size: f64,
    pub eps: f64,
    pub c: f64,
    pub weight: Vec<(i32, f64)>,
    pub nu: f64,
    pub p: f64,
    pub shrinking: bool,
    pub probability: bool,
}

SVM parameters controlling the formulation, kernel, and solver.

Default values match the original LIBSVM defaults.

Fields

svm_type: SvmType

SVM formulation type.

kernel_type: KernelType

Kernel function type.

degree: i32

Degree for polynomial kernel.

gamma: f64

γ parameter for RBF, polynomial, and sigmoid kernels. Set to 1/num_features when 0.

coef0: f64

Independent term in polynomial and sigmoid kernels.

cache_size: f64

Cache memory size in MB.

eps: f64

Stopping tolerance for the solver.

c: f64

Cost parameter C (for C-SVC, ε-SVR, ν-SVR).

weight: Vec<(i32, f64)>

Per-class weight overrides: (class_label, weight) pairs.

nu: f64

ν parameter (for ν-SVC, one-class SVM, ν-SVR).

p: f64

ε in the ε-insensitive loss function (ε-SVR).

shrinking: bool

Whether to use the shrinking heuristic.

probability: bool

Whether to train for probability estimates.

Implementations

impl SvmParameter

pub fn validate(&self) -> Result<(), SvmError>

Validate parameter values (independent of training data).

This checks the same constraints as the original LIBSVM’s svm_check_parameter, except for the ν-SVC feasibility check which requires the problem. Use check_parameter for the full check.

Trait Implementations

impl Clone for SvmParameter

fn clone(&self) -> SvmParameter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SvmParameter

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

Formats the value using the given formatter.

impl Default for SvmParameter

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for SvmParameter

fn eq(&self, other: &SvmParameter) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SvmParameter