Title: Ground-Truth Subgraphs for Better Training and Evaluation of Knowledge Graph Augmented LLMs
Primary area: datasets and benchmarks
Keywords: knowledge graphs, augmented LLMs, GraphRAG, RAG, benchmarks, synthetic datasets

Abstract: Retrieval of information from graph-structured knowledge bases represents a promising direction for improving the factuality of LLMs. While various solutions have been proposed, a comparison of methods is difficult due to the lack of challenging QA datasets with ground-truth targets for graph retrieval.
We present SynthKGQA, a framework for generating high-quality synthetic Knowledge Graph Question Answering datasets from any Knowledge Graph, providing the full set of ground-truth facts in the KG to reason over each question. We show how, in addition to enabling more informative benchmarking of KG retrievers, the data produced with SynthKGQA also allows us to train better models.
We apply SynthKGQA to Wikidata to generate GTSQA, a new dataset designed to test zero-shot generalization abilities of KG retrievers  with respect to unseen graph structures and relation types, and benchmark popular solutions for KG-augmented LLMs on it.

TL;DR: A new framework for generating high-quality, complex Knowledge Graph Question Answering synthetic datasets with ground-truth subgraphs, enabling better training and benchmarking of GraphRAG solutions