4 papers
Vivace: Exact Temporal OLAP over Interval Histories via Independent Serverless Execution
Woohyeok Park, Taeyoon Kim, Hyunjoon Kim +1
Temporal online analytical processing (OLAP) analyzes past states of data whose values change over time. Such histories are naturally stored as interval histories, in which each ro…
Trajectory-Aware Clinical Risk Prediction via Severity-Grounded Knowledge Graphs and Retrieval-Augmented Generation
Kyunghoon Jeon, Youmin Ko, Woohwan Jung +1
While Electronic Health Records (EHRs) offer a wealth of clinical data, effectively augmenting a patient's records with heterogeneous external knowledge to predict the patient's cl…
Efficient Defective Clique Enumeration and Search with Worst-Case Optimal Search Space
Jihoon Jang, Yehyun Nam, Kunsoo Park +1
A -defective clique is a relaxation of the traditional clique definition, allowing up to missing edges. This relaxation is crucial in various real-world applications such as…
Subgraph-Aware Training of Language Models for Knowledge Graph Completion Using Structure-Aware Contrastive Learning
Youmin Ko, Hyemin Yang, Taeuk Kim +1
Fine-tuning pre-trained language models (PLMs) has recently shown a potential to improve knowledge graph completion (KGC). However, most PLM-based methods focus solely on encoding…