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Jinbo Wang

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#artificial intelligence Preprint Sep 2026

How Does Local Landscape Geometry Evolve in Language Model Pre-Training?

The scale and expense of pre-training language models make efficient hyperparameter tuning essential, yet a principled guidance is still missing. In this work, we analyze language model pre-training dynamics from a local landscape geometry perspective. Our study reveals two distinct phases. In Phase I, sharpness of the...

Zhan-Peng Zhou, Yu-Han Sun, Bing-Rui Li et al. · 1 citation
#artificial intelligence Preprint Aug 2026

When Do Larger Batches Help Scale LLM Reinforcement Learning?

A larger-batch configuration reduces time-to-target only when its throughput gain exceeds its samples-to-target penalty, and a larger-batch configuration reduces time-to-target only when its throughput gain exceeds its samples-to-target penalty.

Zi-Niu Li, Jinbo Wang, Guan-Hua Huang et al. · 0 citations
Preprint Aug 2026

Complementary Quantum Correlations Are Universal for Qubits

Extracting total correlations from a quantum system usually requires reconstructing its state, whereas many experiments access only a few measurement settings. A possible shortcut is to add the mutual informations obtained from complementary measurements; in dimensions above two, however, this procedure can count the s...

Jinbo Wang, Qi-Hang Wang, Kun-Ren Chen · 2 citations

More Expressive Feedforward Layers: Part I. Token-Adaptive Mixing of Activations

This work proposes Mixture of Activations (MoA), a token-adaptive FFN design that mixes a dictionary of activation functions using lightweight input-dependent gates while sharing the same linear projections, suggesting that token-adaptive activation mixing is a simple and effective mechanism for improving FFN expressiv...

Mingze Wang, Jinbo Wang, Yikuan Xia et al. · 3 citations

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