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Chong-kwon Kim

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Train Dirty, Recover Reliably: A Controlled Study of Data-Efficient Recovery Tuning for Tool Agents

This paper studies a focused question: whether a small amount of targeted supervision can improve a tool agent’s choice of immediate recovery actions under controlled failures, and introduces Mini Recovery Tuning, a deterministic benchmark and training protocol for evaluating this question.

Yu-Min Lee, Chong-kwon Kim, Y. Choi · 0 citations
#machine learning Preprint Jan 2026

Persistent Tri-State Message Passing

Permuting complete weight vectors between samples quantifies the same role-state dependence while preserving their empirical distribution in Persistent Tri-State Message Passing, which combines persistent additive, subtractive, and inactive roles with weights computed from each sample's endpoint states.

Y. Choi, Ji-Ho Choi, Chong-kwon Kim · 0 citations

STAR: Structure-Aware Adaptive Retrieval for RAG

STAR is presented, a structure-aware adaptive retrieval framework for RAG that treats this mismatch as a problem of diagnosing evidence sufficiency and benefits from a control signal that preserves structurally distinct insufficiency patterns rather than collapsing them into a single scalar confidence estimate.

Yeowon Jeon, Chong-kwon Kim, Y. Choi · 0 citations
#natural language process... Preprint Sep 2026

When Retrieval Helps: Selective Retrieval for Single-Turn Mental-Health QA

Following psychotherapy-grounded RAG systems such as coTherapist, a compact and controllable guideline corpus comprising coping-strategy, psychoeducational, and safety resources is constructed and operationalized using three draft-conditioned utility dimensions: psychoeducational need, coping need, and response specifi...

Hyunseok Oh, Chong-kwon Kim, Y. Choi · 0 citations
Aug 2026

Uncertainty-Aware Adaptive Edge Blocking in Heterophilic Graph Neural Networks

This work provides theoretical guarantees for the selective blocking rule by deriving the signed-versus-blocked decision boundary, separating signed-matrix effects from nonnegative block-operator spectral arguments, and showing when adaptive blocking preserves class-dependent components.

Ji-Ho Choi, Yu-Min Lee, Chanran Kim et al. · 0 citations

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