الباحثون

Zhi Chen

المنشورات 2

نسخة أولية وصول مفتوح

Timer-M1: A Multivariate Time Series Foundation Model via Learning Primitives

Haoran Zhang, Haixuan Liu, Xingjian Su وآخرون · 2026

We introduce Timer-M1, a pretrained multivariate time series foundation model that learns with primitives for zero-shot forecasting. Across domains, time series share elementary temporal and relational patterns, termed primitives, yet differ in how these primitives manifest and evolve across different contexts. Despite …

نسخة أولية وصول مفتوح

CARM: Cancellation-Aware Response Masking for LLM Reinforcement Learning

Yafei Zhang, Songshuo Lu, Sicong Liao وآخرون · 2026

Recent years have witnessed the rapid adoption of reinforcement learning (RL) in large language model (LLM) post-training, with substantial gains in mathematical reasoning and code generation. In practical systems, however, policy updates and differences between rollout and training engines can make sampled responses o …

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