Knowledge Synthesis Graph: An LLM-Based Approach for Modeling Student Collaborative Discourse

Fuente: arXiv
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Autori principali: Shui, Bo, Zhu, Xinran
Natura: Preprint
Pubblicazione: 2026
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author Shui, Bo
Zhu, Xinran
author_facet Shui, Bo
Zhu, Xinran
contents Asynchronous, text-based discourse-such as students' posts in discussion forums-is widely used to support collaborative learning. However, the distributed and evolving nature of such discourse often makes it difficult to see how ideas connect, develop, and build on one another over time. As a result, learners may struggle to recognize relationships among ideas-a process that is critical for idea advancement in productive collaborative discourse. To address this challenge, we explore how large language models (LLMs) can provide representational guidance by modeling student discourse as a Knowledge Synthesis Graph (KSG). The KSG identifies ideas from student discourse and visualizes their epistemic relationships, externalizing the current state of collaborative knowledge in a form that can support further inquiry and idea advancement. In this study, we present the design of the KSG and evaluate the LLM-based approach for constructing KSGs from authentic student discourse data. Through multi-round human-expert coding and prompt iteration, our results demonstrate the feasibility of using our approach to construct reliable KSGs across different models. This work provides a technical foundation for modeling collaborative discourse with LLMs and offers pedagogical implications for augmenting complex knowledge work in collaborative learning environments.
format Preprint
id arxiv_https___arxiv_org_abs_2602_06194
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Knowledge Synthesis Graph: An LLM-Based Approach for Modeling Student Collaborative Discourse
Shui, Bo
Zhu, Xinran
Human-Computer Interaction
Asynchronous, text-based discourse-such as students' posts in discussion forums-is widely used to support collaborative learning. However, the distributed and evolving nature of such discourse often makes it difficult to see how ideas connect, develop, and build on one another over time. As a result, learners may struggle to recognize relationships among ideas-a process that is critical for idea advancement in productive collaborative discourse. To address this challenge, we explore how large language models (LLMs) can provide representational guidance by modeling student discourse as a Knowledge Synthesis Graph (KSG). The KSG identifies ideas from student discourse and visualizes their epistemic relationships, externalizing the current state of collaborative knowledge in a form that can support further inquiry and idea advancement. In this study, we present the design of the KSG and evaluate the LLM-based approach for constructing KSGs from authentic student discourse data. Through multi-round human-expert coding and prompt iteration, our results demonstrate the feasibility of using our approach to construct reliable KSGs across different models. This work provides a technical foundation for modeling collaborative discourse with LLMs and offers pedagogical implications for augmenting complex knowledge work in collaborative learning environments.
title Knowledge Synthesis Graph: An LLM-Based Approach for Modeling Student Collaborative Discourse
topic Human-Computer Interaction
url https://arxiv.org/abs/2602.06194