This work targets a KG for Sophocles’ Antigone that supports two coupled uses: structured retrieval, through integrity and competency questions expressed in SPARQL over dramatic structure and interpretive annotations; and interactive exploration, through a lightweight read client that navigates lines across languages, shows scene context, and reports corpus statistics.
A production extraction layer that converts a live document stream into a validated knowledge graph aligned to a formal ontology, and improved search recall from roughly 70 to 95 percent with no false merges, and corrected seven classes of silent quality defect.
Vaibhav Dangaich, Kevin Lewis, Kundeshwar Pundalik· arXiv.org· 0 citations
A seven-stage graph-grounded pipeline that converts domain documents into a complete, auditable Web Ontology Language (OWL) Terminological Box (TBox) without any unconstrained generation step is presented, demonstrating that the pipeline produces stable, reusable domain representations from large document corpora.
Maruf Ahmed Mridul, A. Talukder, O. Seneviratne· 0 citations
This work presents an agentic text-to-SPARQL system that goes one step beyond static tool-using agents: a researcher agent that, after each round of inference on a validation set, proposes and tests changes to its own prompts, rules, and tool-orchestration code.
. Large Language Models (LLMs) are increasingly used to maintain persistent, domain-specific knowledge bases—a paradigm in which assertions must remain accurate as the field evolves. Existing staleness detection treats each assertion independently, missing a structural reality: when a foundational concept becomes outdated, every dependent concept inherits some degree of that staleness through ontology relationships. We present WikiMonitor-Onto, a lightweight propagation layer built on WikiMonitor that models staleness as a signal flowing through a domain ontology graph. We extract a concept graph of 642 nodes and 487 edges from 61 AI lecture documents, define three typed propagation relations ( is-a , depends-on , related-to ), and propagate staleness via weighted Breadth-First Search (BFS) with exponential hop decay. On a human-annotated gold standard of 62 concepts (25 indirect-stale, 37 fresh), the independent baseline detects zero indirect-stale concepts by construction, while WikiMonitor-Onto achieves precision 0.824 and recall 0.560 at the optimally tuned configuration ( λ = 0.30). Grid search reveals that is-a and depends-on carry equal optimal propagation weight (both 0.90). A sensitivity analysis confirms that propagation is robust to the choice of seed-value distribution, with F1 varying by only 0.10 (0.571–0.667) across four tested distributions. Propagation saturates at hop depth 1 under conservative thresholds, suggesting that one-hop propagation suffices for high-precision deployment.
Bailing Zhang· Journal of Advances in Artif...· 0 citations
A novel, interpretable metric for intrinsic KG quality assessment that measures how closely an automatically extracted graph approximates an"ideal"graph capturing the key noun phrases, predicate relations, and basic linguistic phenomena such as negation expressed in the source text is proposed.
Nipun Misra, Vikranth Udandarao, Aanchal Gupta et al.· 0 citations
A two-stage LLM-assisted workflow for French maintenance regulations is presented: ontology engineering from a SEMLEG-based core ontology, followed by construction of an ontology-grounded French legal knowledge graph.
Génesis Montenegro, M. Billami, Catherine Faron et al.· arXiv.org· 0 citations
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