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Conference Open access 2026

Structural Node Importance Beyond Classical Centrality: A Comparative Study of Entropy-Based k-Hop Measures

This paper investigates whether entropy-based k-hop metrics capture aspects of structural node importance that are not emphasized by classical centrality measures. We compare degree and eigenvector centrality with two entropy-based measures, Entropy-Weighted Redundancy (EWR) and Normalized Entropy Density (NED), on thr...

Zsolt Valiskó, T. Balla, Csaba Biró · 0 citations
Conference Open access 2026

Practical Prediction of Query Execution Time in PostgreSQL Using Lightweight Machine Learning Models

Accurate prediction of query execution time is important for workload scheduling, admission control, and service-level management in modern database systems. In PostgreSQL, the optimizer selects execution plans using internal cost estimates that reflect relative expected work rather than actual wall-clock runtime. This...

T. Balla · 0 citations

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