LangTopo: Aligning Language Descriptions of Graphs with Tokenized Topological Modeling
- URL: http://arxiv.org/abs/2406.13250v1
- Date: Wed, 19 Jun 2024 06:20:22 GMT
- Title: LangTopo: Aligning Language Descriptions of Graphs with Tokenized Topological Modeling
- Authors: Zhong Guan, Hongke Zhao, Likang Wu, Ming He, Jianpin Fan,
- Abstract summary: We introduce LangTopo, which aligns graph structure modeling with natural language understanding at the token level.
We demonstrate the effectiveness of our proposed method on multiple datasets.
- Score: 10.907949155931474
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Recently, large language models (LLMs) have been widely researched in the field of graph machine learning due to their outstanding abilities in language comprehension and learning. However, the significant gap between natural language tasks and topological structure modeling poses a nonnegligible challenge. Specifically, since natural language descriptions are not sufficient for LLMs to understand and process graph-structured data, fine-tuned LLMs perform even worse than some traditional GNN models on graph tasks, lacking inherent modeling capabilities for graph structures. Existing research overly emphasizes LLMs' understanding of semantic information captured by external models, while inadequately exploring graph topological structure modeling, thereby overlooking the genuine capabilities that LLMs lack. Consequently, in this paper, we introduce a new framework, LangTopo, which aligns graph structure modeling with natural language understanding at the token level. LangTopo quantifies the graph structure modeling capabilities of GNNs and LLMs by constructing a codebook for the graph modality and performs consistency maximization. This process aligns the text description of LLM with the topological modeling of GNN, allowing LLM to learn the ability of GNN to capture graph structures, enabling LLM to handle graph-structured data independently. We demonstrate the effectiveness of our proposed method on multiple datasets.
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