Interactive Visual Pattern Search on Graph Data via Graph Representation Learning

• URL: http://arxiv.org/abs/2202.09459v1
• Date: Fri, 18 Feb 2022 22:30:28 GMT
• Title: Interactive Visual Pattern Search on Graph Data via Graph Representation Learning
• Authors: Huan Song, Zeng Dai, Panpan Xu, Liu Ren
• Abstract summary: We propose a visual analytics system GraphQ to support human-in-the-loop, example-based, subgraph pattern search. To support fast, interactive queries, we use graph neural networks (GNNs) to encode a graph as fixed-length latent vector representation. We also propose a novel GNN for node-alignment called NeuroAlign to facilitate easy validation and interpretation of the query results.
• Score: 20.795511688640296
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Graphs are a ubiquitous data structure to model processes and relations in a wide range of domains. Examples include control-flow graphs in programs and semantic scene graphs in images. Identifying subgraph patterns in graphs is an important approach to understanding their structural properties. We propose a visual analytics system GraphQ to support human-in-the-loop, example-based, subgraph pattern search in a database containing many individual graphs. To support fast, interactive queries, we use graph neural networks (GNNs) to encode a graph as fixed-length latent vector representation, and perform subgraph matching in the latent space. Due to the complexity of the problem, it is still difficult to obtain accurate one-to-one node correspondences in the matching results that are crucial for visualization and interpretation. We, therefore, propose a novel GNN for node-alignment called NeuroAlign, to facilitate easy validation and interpretation of the query results. GraphQ provides a visual query interface with a query editor and a multi-scale visualization of the results, as well as a user feedback mechanism for refining the results with additional constraints. We demonstrate GraphQ through two example usage scenarios: analyzing reusable subroutines in program workflows and semantic scene graph search in images. Quantitative experiments show that NeuroAlign achieves 19-29% improvement in node-alignment accuracy compared to baseline GNN and provides up to 100x speedup compared to combinatorial algorithms. Our qualitative study with domain experts confirms the effectiveness for both usage scenarios.

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