A type of estimation, a method of constructing new data points within the range of a discrete set of known data points.

In the mathematical field of numerical analysis, interpolation is a type of estimation, a method of constructing new data points within the range of a discrete set of known data points.

In engineering and science, one often has a number of data points, obtained by sampling or experimentation, which represent the values of a function for a limited number of values of the independent variable. It is often required to interpolate, i.e., estimate the value of that function for an intermediate value of the independent variable.

A closely related problem is the approximation of a complicated function by a simple function. Suppose the formula for some given function is known, but too complicated to evaluate efficiently. A few data points from the original function can be interpolated to produce a simpler function which is still fairly close to the original. The resulting gain in simplicity may outweigh the loss from interpolation error.

data points

definition

function

independent variable

interpolation

mathematical field numerical analysis

method

new data points

type estimation

usage

definition

function

independent variable

interpolation

mathematical field numerical analysis

method

new data points

type estimation

usage

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