meaning of interpolation

1. The act of introducing or inserting anything, especially that which is spurious or foreign.
2. That which is introduced or inserted, especially something foreign or spurious.
3. The method or operation of finding from a few given terms of a series, as of numbers or observations, other intermediate terms in conformity with the law of the series.
4. interpolation algorithm> A mathematical procedure which estimates values of a function at positions between listed or given values. Interpolation works by fitting a "curve" i. e. a function to two or more given points and then applying this function to the required input. Example uses are calculating trigonometric functions from tables and audio waveform sythesis. The simplest form of interpolation is where a function, fx, is estimated by drawing a straight line "linear interpolation" between the nearest given points on either side of the required input value: fx ~ fx1 + fx2 - fx1x-x1/x2 - x1 There are many variations using more than two points or higher degree polynomial functions. The technique can also be extended to functions of more than one input.
5. the action of interjecting or interposing an action or remark that interrupts

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