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20242026
most citedLearnerVoice: A Dataset of Non-Native English Learners' Spontaneous Speech

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cs.LG2026

WHALE: A Simple Recipe for Joint Harness-Weight Optimization

Haechan Kim, Yoonho Lee, Gisang Lee +2

Agent performance depends jointly on the model parameters and the executable harness code that manages context and control flow. Optimizing either component in isolation can leave…

cs.CL2026

Pruning and Distilling Mixture-of-Experts into Dense Language Models

Junhyuck Kim, Jihun Yun, Haechan Kim +3

Mixture-of-Experts (MoE) is now the dominant architecture for frontier language models, yet it requires all expert parameters to be loaded in memory, making it less preferable for…

cs.CL2026

KVoiceBench, KOpenAudioBench, and KMMAU: Agent-Driven Korean Speech Benchmarks for Evaluating SpeechLMs

Haechan Kim, Seungjun Chung, Inkyu Park +2

Speech language models (SpeechLMs) have achieved substantial progress by extending large language models (LLMs) to the speech modality. However, SpeechLM evaluation remains heavily…

cs.CL2026

Raon-Speech Technical Report

Beomsoo Kim, Changho Choi, Dohyun Kim +23

We present Raon-Speech, a top-performing 9B-parameter speech language model (SpeechLM) for English and Korean speech understanding, answering, and generation, and Raon-SpeechChat,…

cs.LG2026

Discounted Beta-Bernoulli Reward Estimation for Sample-Efficient Reinforcement Learning with Verifiable Rewards

Haechan Kim, Soohyun Ryu, Gyouk Chu +2

Reinforcement learning with verifiable rewards (RLVR) has emerged as an effective post-training paradigm for improving the reasoning capabilities of large language models. However,…