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weight function
A weight function is a mathematical device used when performing a sum, integral, or average to give some elements more "weight" or influence on the result than other elements in the same set. The result of this application of a weight function is a weighted sum or weighted average. Weight functions occur frequently in statistics and analysis, and are closely related to the concept of a measure. Weight functions can be employed in both discrete and continuous settings. They can be used to construct systems of calculus called "weighted calculus"〔Jane Grossman, Michael Grossman, Robert Katz. (First Systems of Weighted Differential and Integral Calculus'' ), ISBN 0-9771170-1-4, 1980.〕 and "meta-calculus".〔Jane Grossman.(''Meta-Calculus: Differential and Integral'' ), ISBN 0-9771170-2-2, 1981.〕
== Discrete weights ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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