kmath-core/space.kscience.kmath.expressions/AutoDiffProcessor

AutoDiffProcessor

fun interface AutoDiffProcessor<T, I, out A : Algebra<I>>

A factory that converts an expression in autodiff variables to a DifferentiableExpression

Parameters

T

type of the constants for the expression

I

type of the actual expression state

A

type of expression algebra

Functions

abstract fun differentiate(function: A.() -> I): DifferentiableExpression<T>

Extensions

chiSquaredExpression

@JvmName(name = "genericChiSquaredExpression")

fun <T : Comparable<T>, I : Any, A : ExtendedField<I>, ExpressionAlgebra<T, I>> AutoDiffProcessor<T, I, A>.chiSquaredExpression(x: Buffer<T>, y: Buffer<T>, yErr: Buffer<T>, model: A.(I) -> I): DifferentiableExpression<T>

Generate a chi squared expression from given x-y-sigma data and inline model. Provides automatic differentiation.

fun <I : Any, A : ExtendedField<I>, ExpressionAlgebra<Double, I>> AutoDiffProcessor<Double, I, A>.chiSquaredExpression(x: Buffer<Double>, y: Buffer<Double>, yErr: Buffer<Double>, model: A.(I) -> I): DifferentiableExpression<Double>

Sources