Method for calculating the variance

G - Physics – 06 – F

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G06F 17/18 (2006.01)

Patent

CA 2333681

This applicaton describes a method and device for measuring a variation value, where a value representative or a variation between a quantity Q and a reference quantity Qref is determined by calculating error samples x i and then determining the value R representative of the variation from (6) where each value of w j is recursively determined from the previous value w j-1. Through this recursive determination, a nested loop is avoided, whereby the amount of necessary calculation is greatly reduced.

La présente invention concerne un procédé et un dispositif de mesure d'une valeur de variation, une valeur représentative d'une variation entre une quantité Q et une quantité de référence Qref étant déterminée par calcul d'échantillons d'erreur xi puis détermination de la valeur R représentative de la variation à partir de la formule (6) dans laquelle chaque valeur de wj-1 est déterminée de manière récursive à partir de la valeur antérieure wj-1. Grâce à cette détermination récursive, on évite une boucle emboîtée, ce qui permet de réduire considérablement la quantité de calcul nécessaire.

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