AIExplainer
Machine Learning Deep Learning Intermediate 1 min read

What is a weighted sum?

The sum of all the relevant input values multiplied by their corresponding weights.

The sum of all the relevant input values multiplied by their corresponding weights. For example, suppose the relevant inputs consist of the following:

A weighted sum is the input argument to an activation function.

Practitioners refer to weighted sum when building, training, or evaluating machine learning systems. It appears in research papers, product documentation, and technical discussions about AI capabilities and limitations.