基于多重降噪自编码器模型的top-N 推荐算法  

Top-N recommendation algorithm based on multiple denoising auto-encoder

作　　者：方义秋[1] 俞晨曦 葛君伟[1] Fang Yiqiu;Yu Chenxi;Ge Junwei(College of Computer Science&Technology,Chongqing University of Posts&Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学计算机科学与技术学院,重庆400065

出　　处：《计算机应用研究》2020年第12期3582-3585,共4页Application Research of Computers

基　　金：重庆市基础与前沿研究计划资助项目(cstc2015jcyjA30001)。

摘　　要：针对传统降噪自编码器(DAE)中加噪操作的随机性影响预测精度的问题,以及数据矩阵忽视用户具体评分信息的问题,提出了一种结合用户评分的多重降噪自编码器(MDAE)。首先,在输入矩阵中引入具体评分信息,增加输入矩阵信息量;其次,为了在获得鲁棒性数据的前提下减轻加噪操作对预测精度的影响,构建了MDAE模型,将经过不同层次降噪得到的预测矩阵结合非降噪预测矩阵得出最终的预测结果;最后,将模型与其他模型在不同数据集上作实验对比。实验结果表明,结合用户具体评分的MDAE模型可以获得更优质的推荐结果。Focused on the problems that the randomness of the noise-adding operation in the traditional denoising auto-encoder(DAE)affects the prediction accuracy,and the data matrix ignores the user rating information,this paper proposed a multiple denoising auto-encoder combined with the user rating.Firstly,the method introduced the user rating information into the input matrix to increase the information quantity of the input matrix.Secondly,in order to reduce the corruption data effection on the prediction accuracy under the premise of obtaining robust data,it constructed the MDAE model.The prediction matrix with noisy data combined with the non-noise prediction matrix to obtain the final prediction result.Finally,the experiments compared the model with other models on different data sets.The experimental results show that the MDAE model combines with user rating information can get a better recommendation effect.

关 键 词：预测精度 用户评分 加噪操作 多重降噪自编码器 

分 类 号：TP183[自动化与计算机技术—控制理论与控制工程]