kind of a score function for how to assign the score between two embeddings it could be a simpler product in contrast pre-recording they make use of the bilinear dot product which is which which is also been used in the past in past work so that's a little more expressive than just using a regular dot product and it doesn't require you to normalize the vectors so so that way you can think of the W matrix in the bilinear product is learning some kind of Association matrix that figures out some property that helps you to