الباحثون

Zhengzhang Chen

المنشورات 3

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Which and When to Admit: Gradient Admission for Data-Centric Small Language Model Finetuning

Hongyu Cao, Yanchi Liu, Kunpeng Liu وآخرون · 2026

LoRA fine-tuning adapts small language models (SLMs) to heterogeneous instruction data within a low-rank update subspace, making it vulnerable to three structural problems: conflicting gradients that cancel, static data selection that cannot track evolving learning dynamics, and subspace saturation that causes later up …

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ST-Bench: A Spatial-Temporal Benchmark for Multi-Agent System Generation on Scientific Research Tasks

Qi Cheng, Rongchao Dong, Shengyu Chen وآخرون · 2026

The rapid progress of LLM-based multi-agent systems (MAS) has shown that they largely outperform single agents on coding, math, and QA tasks, where executable tests provide a binary success signal. Whether this advantage transfers to real scientific data analysis remains untested. We introduce ST-Bench, a benchmark des …

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WorkflowOps: Learning Agent Collaboration Priors for Multi-Agent Workflow Orchestration

Qi Cheng, Shengyu Chen, Wei Cheng وآخرون · 2026

Multi-agent systems are increasingly deployed for complex knowledge work, yet their orchestration layers remain largely memoryless: each new task is decomposed, assigned, and executed from scratch with no benefit from prior successful executions. We present WorkflowOps, a multi-agent workflow orchestration framework th …

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