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Sungjae Lee

POSTECH

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#artificial intelligence Preprint Oct 2026

Dynamic Expert Pruning for Multi-Agent Systems

Across diverse tasks and roles, model scales, and MoE architectures, DEP achieves better overall accuracy than static pruning and merging baselines, and generalizes to workflows unseen in training without retraining.

Jabin Koo, Soheil Abbasloo, Sungjae Lee et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Confidence-Gated Transductive Test Generation for Code Reranking

Confidence-Gated Transductive Test Generation (CoTT), which first uses an efficient inductive procedure and invokes transductive generation only when inductive confidence is low, improves output reliability while allocating extra computation only when needed.

Sungjae Lee, Youngsik Yoon, Seockbean Song et al. · 0 citations
Book Open access Jul 2026

HAT-MPI: Hierarchical Auto Tuning of MPI Inter-Node Communication on InfiniBand Clusters

This work presents HAT-MPI, an ML-based framework that identifies the UCX Eager-Rendezvous protocol threshold and the optimal collective algorithm on InfiniBand HPC clusters and introduces two complementary techniques that improve the conventional data collection and evaluation workflow, namely LLM-assisted HPC hardwar...

Sungjae Lee, Sam Tilford, Dhabaleswar K. Panda · 0 citations
Book Open access Aug 2026

Toward WAN-Aware LLM Training Across Heterogeneous, Geo-Distributed Sites

Preliminary results from a geo-distributed LLM training prototype that treats networking constraints as first-order design concerns are presented, motivating adaptive networking support for synchronization, compression, placement, telemetry, and recovery in geo-distributed LLM training.

Zi-Yue Luo, Jiaxuan Cai, Cedric Le Denmat et al. · 0 citations

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