arXiv AI By Mario Alviano, Lorenzo Grillo, Nicola Leone, Fabrizio Lo Scudo

Logic-Guided Data Extraction with Answer Set Programming and Large Language Models

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arXiv:2607. 19365v1 Announce Type: new Abstract: When Large Language Models (LLMs) are used for semantic data extraction from unstructured text, producing candidate relational facts from natural language, they may remain unreliable for tasks requiring complex combinatorial reasoning and global consistency.

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arXiv AI
Aug 26

Constrained Entity Selection under Partial Knowledge for LLM-Based Knowledge Graph QA

The paper introduces Constrained Entity Selection under Partial Knowledge (CES-PK), a framework for improving large language model (LLM) based knowledge graph question answering (KGQA) by filtering candidate answers with lightweight symbolic constraints instead of full semantic parsing. CES-PK uses a three-valued constraint semantics—satisfied, violated, unknown—to handle incomplete knowledge graphs and avoid incorrect rejections under open‑world assumptions. Experiments on the Hetionet biomedical knowledge graph show that applying type, relation, and exclusion constraints increases precision while preserving recall, and that satisfied constraints can be used to rank remaining candidates.

By Emanuel Kitzelmann