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Dong-Ha Lee

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#artificial intelligence Preprint May 2026

Hindsight Compacts but Does Not Repair: Rethinking On-Policy Self-Distillation in Reasoning Models

It is hypothesized that in long traces, hindsight reveals which steps were unnecessary more readily than which steps would have repaired the solution, and that changing the divergence, enriching or reinjecting the privileged context, and training longer only move OPSD along the same accuracy-length tradeoff.

Jaehoon Kim, Dong-Ha Lee · 4 citations
#diffusion models Open access Sep 2026

Decoupling the Retention-Energy Trade-Off Through Structural Reorganization of Synaptic Polyelectrolytes for Nonvolatile Neuromorphic Devices.

Electrolyte-gated synaptic transistors (EGSTs) are promising ion-mediated artificial synapses, but their performance is constrained by a retention-energy trade-off. Enhancing long-term memory (LTM) retention often requires enhanced ion accessibility, which can induce excessive ion accumulation and increase energy consu...

Donghwa Lee, Jinbo Kim, Myeongjin An et al. · 0 citations

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