Author

Hyunsung Kim

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Preprint Aug 2026

ELASTIC: Trajectory-Based Synchronization of Event and Tracking Data in Soccer

Combining event and tracking data is fundamental to modern soccer analytics, yet the two sources are rarely well aligned: event timestamps recorded by human annotators often miss the true moment of the action, distorting the spatiotemporal context that downstream models rely on. Existing synchronization methods depend...

Hyunsung Kim, Hoyoung Choi, Kunhee Lee et al. · 0 citations

#artificial intelligence Preprint Sep 2026

DefaultGNN: A Dual-Perspective GNN Framework for Predicting Corporate Default from Buyer-Seller Transaction Networks

This work conducts a large-scale empirical study using real-world electronic tax-invoice data spanning six years that links transaction histories with default events, revealing that transaction-driven risk is both role-dependent (buyer or seller) and scale-dependent.

Junghoon Kim, Hyunsung Kim, Seungyoon Choi et al. · 0 citations