mRAKL: Multilingual Retrieval-Augmented Knowledge Graph Construction for Low-Resourced Languages
Hellina Hailu Nigatu, Min Li, Maartje ter Hoeve, Saloni Potdar, Sarah Chasins · 2025
Knowledge Graphs represent real-world entities and the relationships between them.Multilingual Knowledge Graph Construction (mKGC) refers to the task of automatically constructing or predicting missing entities and links for knowledge graphs in a multilingual setting.In this work, we reformulate the mKGC task as a Question Answering (QA) task and introduce mRAKL: a Retrieval-Augmented Generation (RAG) based system to perform mKGC.We achieve this by using the head entity and linking relation in a question, and having our model predict the tail entity as an answer.Our experiments focus primarily on two low-resourced languages: Tigrinya and Amharic.We experiment with using higherresourced languages Arabic and English for cross-lingual transfer.With a BM25 retriever, we find that the RAG-based approach improves performance over a no-context setting.Further, our ablation studies show that with an idealized retrieval system, mRAKL improves accuracy by 4.92 and 8.79 percentage points for Tigrinya and Amharic, respectively.