most citedOvertrained Language Models Are Harder to Fine-Tune

2 citations · 2 across the 4 of their papers we have counts for

collaborators

6 papers

cs.LG2026

The Best Optimizer Depends on Batch Size

Xingyu Dang, Kaiyue Wen, Sadhika Malladi

A plethora of new adaptive optimizers are designed to efficiently estimate and use minibatch gradient statistics to shape parameter updates, but they are typically benchmarked at a…

cs.LG2026

Priced Guidance: Can Language Models Generate Future Research Ideas?

Kaiyue Wen, Tengyu Ma, Percy Liang

We evaluate language models' capability to generate novel research ideas through the lens of compression. We aim to lower-bound the potentially tiny probability that a language mod…

cs.CL2026

Puro-2B: Poor Lab's Qwen2-1.5B Trained on RTX 5090 within $5090

Kairong Luo, Jiarui Cui, Yaorui Yin +8

Language model pretraining has become almost synonymous with prohibitive cost, placing it out of reach for much of the academic and open-source communities. Although strong open-so…

cs.LG2026

Fantastic Pretraining Optimizers and Where to Find Them II: Hyperball Optimization

Kaiyue Wen, Xingyu Dang, Kaifeng Lyu +2

Matrix based optimizers such as Muon can substantially speed up language model pretraining, but their gains over AdamW are observed to shrink as model size and data scale grow when…

cs.LG2025

Weight Ensembling Improves Reasoning in Language Models

Xingyu Dang, Christina Baek, Kaiyue Wen +2

We investigate a failure mode that arises during the training of reasoning models, where the diversity of generations begins to collapse, leading to suboptimal test-time scaling. N…

cs.CL2025★ 2 cited

Overtrained Language Models Are Harder to Fine-Tune

Jacob Mitchell Springer, Sachin Goyal, Kaiyue Wen +5

Large language models are pre-trained on ever-growing token budgets under the assumption that better pre-training performance translates to improved downstream models. In this work…