activity
20192026
most citedCityFlow: A Multi-Agent Reinforcement Learning Environment for Large Scale City Traffic Scenario

243 citations · 268 across the 14 of their papers we have counts for

collaborators

15 papers

cs.LG2026

Router Drift Control: Mitigating Off-Policy Degradation in Mixture-of-Experts Reinforcement Learning

Liangyao Jin, Zhixin Wang, Liming Liu +8

Reinforcement learning (RL) can become off-policy due to training-inference mismatch, mini-batch updates, and asynchronous training. The resulting mismatch is especially harmful in…

cs.DC2026

FalconGEMM: Surpassing Hardware Peaks with Lower-Complexity Matrix Multiplication

Honglin Zhu, Jiaping Cao, Jiang Shao +10

Peak breaking Matrix Multiplication is a promising technique to improve the performance of DL, especially in LLM training and inference. We present FalconGEMM, a cross-platform fra…

cs.DC2026

PlexRL: Cluster-Level Orchestration of Serviceized LLM Execution for RLVR

Yiqi Zhang, Fangzheng Jiao, Tian Tang +13

Reinforcement learning with verifiable rewards (RLVR) has recently unlocked strong reasoning capabilities in large language models (LLMs), triggering rapid exploration of new algor…

cs.AI2026

daVinci-LLM:Towards the Science of Pretraining

Yiwei Qin, Yixiu Liu, Tiantian Mi +12

The foundational pretraining phase determines a model's capability ceiling, as post-training struggles to overcome capability foundations established during pretraining, yet it rem…

cs.AI2026

Data Darwinism Part I: Unlocking the Value of Scientific Data for Pre-training

Yiwei Qin, Zhen Huang, Tiantian Mi +5

Data quality determines foundation model performance, yet systematic processing frameworks are lacking. We introduce Data Darwinism, a ten-level taxonomy (L0-L9) that conceptualize…

cs.CL2025

Nex-N1: Agentic Models Trained via a Unified Ecosystem for Large-Scale Environment Construction

AGI Team, Yuxuan Cai, Lu Chen +62

The evolution of Large Language Models (LLMs) from passive responders to autonomous agents necessitates a fundamental shift in learning paradigms -- from static imitation to incent…

cs.LG2025

ReSpec: Towards Optimizing Speculative Decoding in Reinforcement Learning Systems

Qiaoling Chen, Zijun Liu, Peng Sun +6

Adapting large language models (LLMs) via reinforcement learning (RL) is often bottlenecked by the generation stage, which can consume over 75\% of the training time. Speculative d…

cs.DC2025

Expert-as-a-Service: Towards Efficient, Scalable, and Robust Large-scale MoE Serving

Ziming Liu, Boyu Tian, Guoteng Wang +15

Mixture-of-Experts (MoE) models challenge serving infrastructures with dynamic, sparse expert utilization, causing instability on conventional systems designed for dense architectu…

cs.DC2025

DistFlow: A Fully Distributed RL Framework for Scalable and Efficient LLM Post-Training

Zhixin Wang, Jiaming Xu, Tianyi Zhou +10

Effectively scaling Reinforcement Learning (RL) is crucial for enhancing the reasoning and alignment of Large Language Models. The massive data and complex execution flows inherent…

cs.LG2024

WebLLM: A High-Performance In-Browser LLM Inference Engine

Charlie F. Ruan, Yucheng Qin, Akaash R. Parthasarathy +11

Advancements in large language models (LLMs) have unlocked remarkable capabilities. While deploying these models typically requires server-grade GPUs and cloud-based inference, the…

cs.SE2024

Productively Deploying Emerging Models on Emerging Platforms: A Top-Down Approach for Testing and Debugging

Siyuan Feng, Jiawei Liu, Ruihang Lai +4

While existing machine learning (ML) frameworks focus on established platforms, like running CUDA on server-grade GPUs, there have been growing demands to enable emerging AI applic…

cs.LG2023★ 12 cited

Relax: Composable Abstractions for End-to-End Dynamic Machine Learning

Ruihang Lai, Junru Shao, Siyuan Feng +16

Dynamic shape computations have become critical in modern machine learning workloads, especially in emerging large language models. The success of these models has driven the deman…

cs.LG2022★ 3 cited

TensorIR: An Abstraction for Automatic Tensorized Program Optimization

Siyuan Feng, Bohan Hou, Hongyi Jin +8

Deploying deep learning models on various devices has become an important topic. The wave of hardware specialization brings a diverse set of acceleration primitives for multi-dimen…

cs.LG2022★ 10 cited

Tensor Program Optimization with Probabilistic Programs

Junru Shao, Xiyou Zhou, Siyuan Feng +7

Automatic optimization for tensor programs becomes increasingly important as we deploy deep learning in various environments, and efficient optimization relies on a rich search spa…

cs.MA2019★ 243 cited

CityFlow: A Multi-Agent Reinforcement Learning Environment for Large Scale City Traffic Scenario

Huichu Zhang, Siyuan Feng, Chang Liu +7

Traffic signal control is an emerging application scenario for reinforcement learning. Besides being as an important problem that affects people's daily life in commuting, traffic…