| Vol-4079 urn:nbn:de:0074-4079-x Copyright © 2025 for the individual papers by the papers' authors. Copyright © 2025 for the volume as a collection by its editors. This volume and its papers are published under the Creative Commons License Attribution 4.0 International (CC BY 4.0).

# RAGE-KG 2025
Retrieval-Augmented Generation Enabled by Knowledge Graphs 2025

### Proceedings of the Second International Workshop on Retrieval-Augmented Generation Enabled by Knowledge Graphs (RAGE-KG 2025)
co-located with the 24th International Semantic Web Conference (ISWC 2025)

### Nara, Japan, November 2-6, 2025.

Edited by

### Daniil Dobriy1
Sanju Tiwari2,3
Jennifer D'Souza3
Nandana Mihindukulasooriya4
Francesco Osborne5

1 Vienna University of Economics and Business, Vienna, Austria
2 Sharda University, Delhi-NCR, India
3 TIB, Leibniz Information Centre for Science and Technology, Germany
4 IBM Research, New York, USA
5 KMi, The Open University, Milton Keynes, United Kingdom

## Table of Contents

- Preface
  Summary: There were 21 papers submitted for peer-review to the workshop. Out of these, 15 papers were accepted for inclusion in the proceedings.

- HubLink: A Novel Question Answering Retrieval Approach over Knowledge Graphs (regular paper) 1-18
  Angelika Kaplan, Jan Keim, Marco Schneider, Ralf Reussner
- Learning to Refine: An Agentic RL Approach for Iterative SPARQL Query Construction (regular paper) 19-32
  Floris Vossebeld, Shenghui Wang
- RETROFIT-CQ Revisited: Leveraging Ontology Triples and Context in Few-Shot LLM Prompting (regular paper) 33-44
  Meiqing Li, Reham Alharbi, Jacopo de Berardinis, Valentina Tamma, Terry R. Payne
- HyP-KGRAG: Hypothetical Path-Based Knowledge Graph Retrieval Augmented Generation with DeepSeek (regular paper) 45-55
  Zhaotai Liu, Harald Sack, Genet Asefa Gesese
- RecipeRAG: A Knowledge Graph-Driven Approach to Personalized Recipe Retrieval and Generation (regular paper) 56-68
  Julie Loesch, Emin Durmuş, Remzi Celebi
- Benchmarking KG-based RAG Systems: A Case Study of Legal Documents (regular paper) 69-82
  Jaycent G. Ongris, Fariz Darari, Berty C. L. Tobing, Douglas R. Faisal, On Lee
- Beyond the Metrics: An Investigation into the Reliability of Evaluation Metrics for Domain Specific Graph-based Question Answering (regular paper) 83-96
  Lia Draetta, Marco Antonio Stranisci, Flaviana Corallo, Pier Felice Balestrucci, Michael Oliverio, Rossana Damiano, Alessandro Mazzei
- Parallel and Multi-Stage Knowledge Graph Retrieval for Behaviorally Aligned Financial Asset Recommendations (regular paper) 97-106
  Fernando Spadea, Oshani Seneviratne
- From Speech to Semantics: Enabling Conversational Access to Scholarly Knowledge Graph (regular paper) 107-119
  Umair Ahmed, Andrea Polini, Nicolas Ferranti
- Beyond Statistical Parroting: Hard-Coding Truth into LLMs via Ontologies (regular paper) 120-131
  Hamed Babaei Giglou, Simon Burbach, Francesco Compagno, Muhammad Ismail, Gunjan Singh, Sebastian Rudolph
- AgCyRAG: an Agentic Knowledge Graph based RAG Framework for Automated Security Analysis (regular paper) 132-144
  Kabul Kurniawan, Rayhan Firdaus Ardian, Elmar Kiesling, Andreas Ekelhart
- Chunk-Link: Context-aware Chunk Completion (short paper) 145-152
  Kenichirou Narita, Satoshi Munakata
- User Interface and Agent Interface for Online Generation of Knowledge Graph’s Competency Questions and Question-Query Training Sets (short paper) 153-159
  Yousouf Taghzouti, Franck Michel, Tao Jiang, Louis-Felix Nothias, Fabien Gandon
- Boosting Knowledge Graph Question Answering with Open Source Lightweight Large Language Models and RAG Techniques (short paper) 160-168
  Mario Caruso, Giorgia Lodi, Carlo Macis, Simone Persiani, Valentina Presutti
- Towards Harmonised Rail Safety Knowledge: LLM Techniques for EU Accident Report Processing (short paper) 169-174
  Shahrom Sohi, Dragomir Balan, Amin Anjomshoaa, Axel Polleres

## Acknowledgement

This workshop was funded in whole or in part by the Austrian Science Fund (FWF) 10.55776/COE12 and the COST Action CA23147 GOBLIN - Global Network on Large-Scale, Cross-domain and Multilingual Open Knowledge Graphs, supported by COST (European Cooperation in Science and Technology, https://www.cost.eu).

2025-10-27: submitted by Daniil Dobriy, metadata incl. bibliographic data published under Creative Commons CC0
2025-10-27: published on CEUR Workshop Proceedings (CEUR-WS.org, ISSN 1613-0073) |valid HTML5|