A weighted sum is a mathematical operation that involves multiplying each element of a set by a corresponding weight and then summing these products to produce a single value. This concept is fundamental in various fields, including machine learning and natural language processing, where different inputs contribute differently to an output, allowing models to prioritize certain inputs over others. In the context of attention mechanisms and Transformers, weighted sums help determine which parts of the input data are more relevant for making predictions or generating responses.
congrats on reading the definition of weighted sum. now let's actually learn it.