融合评分与评论的评分预测推荐模型

A HYBRID RATING PREDICTION AND RECOMMENDATION MODEL INCORPORATING RATING AND REVIEW

  • 摘要: 评分与评论信息已被广泛用于评分预测推荐模型的研究中。在提取评论文本特征时,以往方法未能充分考虑上下文语义信息,限制了评分预测效果。针对此问题,采用BERT预训练模型与GRU模型相结合的方法处理评论文本信息;由于用户兴趣随时间发生变化,在GRU模型中添加时间权值以准确提取用户动态兴趣特征;进行评分与评论的特征融合时,使用注意力机制来学习融合占比情况。实验结果表明,相比现有模型,该方法提高了评分预测的准确度。

     

    Abstract: Rating and review information is commonly used in the research of rating prediction recommendation models. However, previous methods for extracting text features from reviews have not fully taken into account contextual semantic information, which limits the effectiveness of rating prediction. To overcome this limitation, the GRU model with BERT pre-training was utilized to process review text information. In addition, time weighting was introduced to the GRU model to accurately capture the dynamic changes in user interests. Attention mechanisms were employed to learn the proportion of fusion between rating and review features. The experimental results demonstrate that this method significantly improves the accuracy of rating prediction compared with existing models.

     

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