KG4QG: combining knowledge graph with large language models for multi-hop question generation

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dc.contributor.authorMahamud, Al Hasib
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorChali, Yllias
dc.date.accessioned2025-07-15T19:28:03Z
dc.date.available2025-07-15T19:28:03Z
dc.date.issued2025
dc.degree.levelMasters
dc.description.abstractQuestion generation is a task of Natural Language Processing where the goal is to generate fluent, grammatically correct, and error-free questions based on a given input context and optionally an answer. Multi-hop question generation is a more complex task compared to traditional single-hop question generation, as it requires reasoning over multiple information from multiple input contexts in generating multi-hop questions. In our work, we have addressed the challenge of building a multi-hop question generation system by combining the knowledge graphs with Large Language Models (LLMs). We have designed a framework KG4QG(Knowledge Graph for Question Generation), where knowledge graphs are generated from the input contexts. For the knowledge graph embedding, we use a Graph Attention Network, and for input texts embedding, we leverage a Sentence Transformer. Finally, we apply the BART and T5 models as Large Language Models to generate multi-hop questions from our proposed model. Using the HotpotQA dataset to evaluate the performance of our KG4QG framework, our proposed methodology shows enhanced performance over the previous methodologies
dc.embargoNo
dc.identifier.urihttps://hdl.handle.net/10133/7066
dc.language.isoen
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer Science
dc.publisher.departmentDepartment of Mathematics and Computer Science
dc.publisher.facultyArts and Science
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)
dc.subjectQuestion generation
dc.subjectLarge Language Models
dc.subjectGraph Attention Network
dc.subjectMulti-hop question
dc.subjectKnowledge graph
dc.subject.lcshDissertations, Academic
dc.subject.lcshNatural language processing (Computer science)
dc.titleKG4QG: combining knowledge graph with large language models for multi-hop question generation
dc.typeThesis
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