Product click-through rate prediction model integrating self-attention mechanism

Tong Zhu, Shuqin Li, Chunquan Liang, B. Liu, Xiaopeng Li
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Abstract

In the commodity click-through rate prediction task, existing deep learning models implicitly construct combinatorial features and cannot know the optimal order of the combinatorial features that can be learned; at the same time, the intrinsic correlation between features is ignored, and invalid feature combinations will bring unnecessary noise to the model. To address these problems, a product click-through prediction model (ACDeepFM) incorporating a self-attentive mechanism is proposed, which first uses the self-attentive mechanism to mine the intrinsic connections among input features and adaptively models the weights of input features. Then a compressed interaction network is added to precisely mine the effect of different order combinations of features on the model prediction results. Then deep neural networks are added to fit complex interaction scenarios between users and items. Finally, the information extracted from the self-attentive mechanism module, the deep neural network module and the compressed interaction network module are fed into the subsequent multilayer perceptron layer to further learn meaningful combinatorial features. Experimental results on two publicly available datasets show that the proposed model achieves higher AUC values and lower Logloss values relative to FM, DNN, DeepFM and xDeepFM models, validating the effectiveness of the ACDeepFM model.
整合自关注机制的产品点击率预测模型
在商品点击率预测任务中,现有深度学习模型隐式构建组合特征,无法知道可学习的组合特征的最优顺序;同时,忽略了特征之间的内在相关性,无效的特征组合会给模型带来不必要的噪声。为了解决这些问题,提出了一种包含自关注机制的产品点击率预测模型(ACDeepFM),该模型首先利用自关注机制挖掘输入特征之间的内在联系,并自适应地对输入特征的权重进行建模。然后加入压缩交互网络,精确挖掘不同阶次特征组合对模型预测结果的影响。然后加入深度神经网络来适应用户和物品之间复杂的交互场景。最后,从自关注机制模块、深度神经网络模块和压缩交互网络模块中提取的信息被馈送到后续的多层感知器层,进一步学习有意义的组合特征。在两个公开数据集上的实验结果表明,相对于FM、DNN、DeepFM和xDeepFM模型,该模型获得了更高的AUC值和更低的Logloss值,验证了ACDeepFM模型的有效性。
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