FoGE: Fock Space inspired encoding for graph prompting

• URL: http://arxiv.org/abs/2507.02937v1
• Date: Thu, 26 Jun 2025 23:48:03 GMT
• Title: FoGE: Fock Space inspired encoding for graph prompting
• Authors: Sotirios Panagiotis Chytas, Rudrasis Chakraborty, Vikas Singh,
• Abstract summary: Large Language Models (LLM) are capable of understanding and answering questions about structured data such as graphs.<n>Existing proposals often use some description of the graph to create an augmented'' prompt fed to the LLM.<n>We show that the use of a parameter-free graph encoder based on Fock space representations is remarkably versatile in this problem setting.
• Score: 38.20996638137112
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recent results show that modern Large Language Models (LLM) are indeed capable of understanding and answering questions about structured data such as graphs. This new paradigm can lead to solutions that require less supervision while, at the same time, providing a model that can generalize and answer questions beyond the training labels. Existing proposals often use some description of the graph to create an ``augmented'' prompt fed to the LLM. For a chosen class of graphs, if a well-tailored graph encoder is deployed to play together with a pre-trained LLM, the model can answer graph-related questions well. Existing solutions to graph-based prompts range from graph serialization to graph transformers. In this work, we show that the use of a parameter-free graph encoder based on Fock space representations, a concept borrowed from mathematical physics, is remarkably versatile in this problem setting. The simple construction, inherited directly from the theory with a few small adjustments, can provide rich and informative graph encodings, for a wide range of different graphs. We investigate the use of this idea for prefix-tuned prompts leveraging the capabilities of a pre-trained, frozen LLM. The modifications lead to a model that can answer graph-related questions -- from simple graphs to proteins to hypergraphs -- effectively and with minimal, if any, adjustments to the architecture. Our work significantly simplifies existing solutions and generalizes well to multiple different graph-based structures effortlessly.

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