linear combination

noun Mathematics, (of mathematical quantities)
a sum of products of each quantity times a constant: The expression aX + bY + cZ is a linear combination of X, Y, and Z, where a, b, and c are constants.

Origin:
1955–60

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Not all knowledge can be represented by a linear combination of features.
In addition, the predicted category of the query image is used for linear combination of similarity.
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