use crate::error::{KernelError, Result};
use crate::types::Kernel;
use super::types::ChiSquaredKernel;
impl Kernel for ChiSquaredKernel {
fn compute(&self, x: &[f64], y: &[f64]) -> Result<f64> {
if x.len() != y.len() {
return Err(KernelError::DimensionMismatch {
expected: vec![x.len()],
got: vec![y.len()],
context: "chi-squared kernel".to_string(),
});
}
let chi_sq_dist = Self::chi_squared_distance(x, y);
let result = (-self.gamma * chi_sq_dist).exp();
Ok(result)
}
fn name(&self) -> &str {
"ChiSquared"
}
}