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Author

Pang Wei Koh

4 papers indexed here

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#artificial intelligence Preprint Oct 2026

FrugalEvo: Towards Cost-Aware LLM-Guided Program Evolution

LLM-guided evolutionary methods, such as AlphaEvolve, have emerged as powerful approaches for challenging computational optimization problems, such as circle packing. However, prior work typically optimizes performance gain over a fixed number of iterations. We argue that practical optimization should maximize gain per...

Hui Chen, Xuan Qi, J. Zhao et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Gacha Decoding: Eliciting Diverse Generations Through Instruction Following

We introduce Gacha Decoding, an inference-time method for eliciting diverse language model generations that scales with model capability. Across open-ended domains (in-the-wild chat, creative writing, planning for image generation, and protein design), Gacha Decoding significantly outperforms existing generation divers...

Scott Geng, Yu-Fei Zhang, J. Lee et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Context Language Models

Context Language Models are introduced, language models that natively manage their own context and can be steered with natural-language instructions evolved through a standard skill-optimization loop, improving held-out accuracy by up to 35.9 points on a context-management task while reducing compute.

Ru-Lin Shao, Shannon Zejiang Shen, J. Yin et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Efficient Test-Time Adaptation through Human-AI Interaction

This work proposes test-time adaptation through human-agent interaction (TAHI), which integrates these signals into agent context and weights, and crystallizes each user's training and evaluation criteria via an evolving rubric module.

Zora Zhiruo Wang, Apurva Gandhi, Rulin Shao et al. · 0 citations

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