pub struct SquaredExp {
    pub ls: f64,
    pub ampl: f64,
}
Expand description

Squared exponential kernel

Equivalently a gaussian function.

k(x,y) = A exp(-||x-y||2 / 2l2)

Where A is the amplitude and l the length scale.

Fields

ls: f64

The length scale of the kernel.

ampl: f64

The amplitude of the kernel.

Implementations

Construct a new squared exponential kernel.

Examples
use rusty_machine::learning::toolkit::kernel;
use rusty_machine::learning::toolkit::kernel::Kernel;

// Construct a kernel with lengthscale 2 and amplitude 1.
let ker = kernel::SquaredExp::new(2f64, 1f64);

println!("{0}", ker.kernel(&[1.,2.,3.], &[3.,4.,5.]));

Trait Implementations

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more

Constructs the default Squared Exp kernel.

The defaults are:

  • ls = 1
  • ampl = 1
Returns the “default value” for a type. Read more

The squared exponential kernel function.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.