Example: marketing
Product-based Neural Networks for User Response Prediction
where yis the ground truth (1 for click, 0 for non-click), and y^ is the predicted CTR of our model as in Eq. (1). B. Inner Product-based Neural Network In this section, we demonstrate the Inner Product-based Neural Network (IPNN). In IPNN, we firstly define the pair-wise feature interaction as vector inner product : g(f i;f j) = hf i;f ji.
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