@article{ART003340052},
author={Jung Hyeji},
title={The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality},
journal={Journal of Korean Society of Archives and Records Management},
issn={1598-1487},
year={2026},
volume={26},
number={2},
pages={47-70},
doi={10.14404/JKSARM.2026.26.2.047}
TY - JOUR
AU - Jung Hyeji
TI - The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality
JO - Journal of Korean Society of Archives and Records Management
PY - 2026
VL - 26
IS - 2
PB - Korean Society of Archives and Records Management
SP - 47
EP - 70
SN - 1598-1487
AB - This study investigates the efficacy of ontology-based search reranking that incorporates the producer’s cognitive dispositions and value systems within a Personal Knowledge Management System (PKMS). Grounded in the archival principle of provenance, the study hypothesizes that integrating a producer’s cognitive patterns and value systems can enhance the relevance of search results in personal records. To test this, POR (ver. 1.0–2.1.0), a system that reranks Gemini File Search RAG results using seven ontology scoring factors—hub boost, identity lens matching, cross-domain intersection, thinking pattern boost, graph proximity, value alignment, and authorship—was developed. The system was assessed on 3,702 markdown-based PKM notes, constructing a knowledge graph with 5,717 nodes and 13,544 edges, including 1,810 auto-linked HUB_CONNECTION edges. All 10 hub notes ranked within the top 15 by PageRank, supporting the validity of the hub selection methodology. In a live A/B comparison with 10 queries across 5 types, ontology-based reranking changed an average of 4.4 out of 10 positions, with a mean Kendall’s tau of 0.621 (SD = 0.252). Hub-related queries showed the largest reranking (tau = 0.300), while general queries preserved existing rankings (tau = 0.786). Identity lens matching (57 activations) and cross-domain intersection (29 activations) were the most frequently activated factors. These results demonstrate that personal ontology modeling provides contextual relevance beyond what embedding-based semantic similarity alone can achieve, with effectiveness varying by query type.
KW - RAG ontology;RiC-O;Knowledge graph;Search reranking;Personal Knowledge Management (PKM);Retrieval-augmented generation
DO - 10.14404/JKSARM.2026.26.2.047
ER -
Jung Hyeji. (2026). The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality. Journal of Korean Society of Archives and Records Management, 26(2), 47-70.
Jung Hyeji. 2026, "The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality", Journal of Korean Society of Archives and Records Management, vol.26, no.2 pp.47-70. Available from: doi:10.14404/JKSARM.2026.26.2.047
Jung Hyeji "The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality" Journal of Korean Society of Archives and Records Management 26.2 pp.47-70 (2026) : 47.
Jung Hyeji. The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality. 2026; 26(2), 47-70. Available from: doi:10.14404/JKSARM.2026.26.2.047
Jung Hyeji. "The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality" Journal of Korean Society of Archives and Records Management 26, no.2 (2026) : 47-70.doi: 10.14404/JKSARM.2026.26.2.047
Jung Hyeji. The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality. Journal of Korean Society of Archives and Records Management, 26(2), 47-70. doi: 10.14404/JKSARM.2026.26.2.047
Jung Hyeji. The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality. Journal of Korean Society of Archives and Records Management. 2026; 26(2) 47-70. doi: 10.14404/JKSARM.2026.26.2.047
Jung Hyeji. The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality. 2026; 26(2), 47-70. Available from: doi:10.14404/JKSARM.2026.26.2.047
Jung Hyeji. "The Effect of Personal Ontology-Based Knowledge Graph Reranking on PKMS Search Quality" Journal of Korean Society of Archives and Records Management 26, no.2 (2026) : 47-70.doi: 10.14404/JKSARM.2026.26.2.047
