activity
20232026
most citedOpenChat: Advancing Open-source Language Models with Mixed-Quality Data

27 citations · 30 across the 10 of their papers we have counts for

collaborators

10 papers

cs.MA2026

Praxist: From Experimental Artifacts to Solution Lineages

Jin Li, Ahmed Murtadha, Zhiyu Wang +14

Autonomous R&D agents now write, run, and improve executable artifacts under automated evaluation-but largely as laboratory instruments: shown on curated benchmarks, with gains tha…

cs.LG2026

Riemannian Attention Mechanisms for Transformers: A Theoretical Framework and Architecture Design

Sen Song

All Transformer-based large language models compute attention via the Euclidean inner product, an architectural choice that Dong et al. (2021) proved causes representational rank t…

eess.SP2026

EEG-JEPA: Structured Latent Prediction for EEG Foundation Models

Jinhao Li, Zhiyuan Ma, Xueqiao Han +8

Electroencephalography (EEG) foundation models aim to learn reusable representations from large-scale unlabeled recordings. A common pretraining strategy is masked waveform reconst…

cs.LG2026

Rethinking EEG-Based Disease Diagnosis: Decoupling Instance Representation Learning from Subject-Level Supervision

Zhiyuan Ma, Zeyuan Li, Zhiyi Lu +7

EEG-based disease diagnosis requires one prediction per subject, yet common pipelines segment recordings into short instances, inherit the subject label for every instance, and tra…

cs.CL2026

Why Attend to Everything? Focus is the Key

Hengshuai Yao, Xing Chen, Ahmed Murtadha +8

Standard attention scales quadratically with sequence length. Efficient attention methods reduce this O(n^2) cost, but when retrofitted into pretrained models, they often degrade p…

q-bio.NC2026

Training-Driven Representational Geometry Modularization Predicts Brain Alignment in Language Models

Yixuan Liu, Zhiyuan Ma, Likai Tang +5

How large language models (LLMs) align with the neural representation and computation of human language is a central question in cognitive science. Using representational geometry…

cs.LG2026

Signal-Adaptive Trust Regions for Gradient-Free Optimization of Recurrent Spiking Neural Networks

Jinhao Li, Yuhao Sun, Zhiyuan Ma +5

Recurrent spiking neural networks (RSNNs) are a promising substrate for energy-efficient control policies, but training them for high-dimensional, long-horizon reinforcement learni…

cs.AI2025★ 3 cited

Hierarchical Reasoning Model

Guan Wang, Jin Li, Yuhao Sun +6

Reasoning, the process of devising and executing complex goal-oriented action sequences, remains a critical challenge in AI. Current large language models (LLMs) primarily employ C…

q-bio.NC2025

Capturing Aperiodic Temporal Dynamics of EEG Signals through Stochastic Fluctuation Modeling

Yuhao Sun, Zhiyuan Ma, Xinke Shen +3

Electrophysiological brain signals, such as electroencephalography (EEG), exhibit both periodic and aperiodic components, with the latter often modeled as 1/f noise and considered…

cs.CL2023★ 27 cited

OpenChat: Advancing Open-source Language Models with Mixed-Quality Data

Guan Wang, Sijie Cheng, Xianyuan Zhan +3

Nowadays, open-source large language models like LLaMA have emerged. Recent developments have incorporated supervised fine-tuning (SFT) and reinforcement learning fine-tuning (RLFT…