论文标题
减少维度符合图形节点嵌入的消息传递
Dimensionality Reduction Meets Message Passing for Graph Node Embeddings
论文作者
论文摘要
图神经网络(GNN)已成为各种应用的流行方法,从社交网络分析到建模分子的化学特性。尽管GNN在公共数据集上经常表现出杰出的性能,但由于过度平滑和过度趋势,他们可能难以学习数据中的长期依赖性。为了减轻这一挑战,我们提出了PCAPASS,该方法结合了主成分分析(PCA)和消息传递,以以无监督的方式生成节点嵌入,并利用梯度提高决策树来分类任务。我们从经验上表明,与节点分类基准的流行GNN相比,这种方法提供了竞争性能,同时从较长距离社区收集信息。我们的研究表明,将尺寸降低与消息传递和跳过连接相关的是一种有前途的机制,用于汇总图形结构化数据中的远程依赖性。
Graph Neural Networks (GNNs) have become a popular approach for various applications, ranging from social network analysis to modeling chemical properties of molecules. While GNNs often show remarkable performance on public datasets, they can struggle to learn long-range dependencies in the data due to over-smoothing and over-squashing tendencies. To alleviate this challenge, we propose PCAPass, a method which combines Principal Component Analysis (PCA) and message passing for generating node embeddings in an unsupervised manner and leverages gradient boosted decision trees for classification tasks. We show empirically that this approach provides competitive performance compared to popular GNNs on node classification benchmarks, while gathering information from longer distance neighborhoods. Our research demonstrates that applying dimensionality reduction with message passing and skip connections is a promising mechanism for aggregating long-range dependencies in graph structured data.