6 papers
Grounding Spatial Relations in a Compact World Model: Instruction Leakage and a Goal-Free Dynamics Fix
Yufeng Wang, Lu Wei, Haibin Ling
Compact world models that condition on a language goal promise to ground relations such as ``put the red block left of the blue block'' using a sparse set of explicit \emph{referen…
Conservative Discrete Structure Stabilizes Autoregressive Rollouts in a 1D Drift Diffusion Poisson Benchmark
Yufeng Wang, Lu Wei, Haibin Ling
Learned plasma transport surrogates can match short horizon states while failing over long rollouts because charge accounting, density admissibility, and Poisson compatible field r…
Retrieval as a Decision: Training-Free Adaptive Gating for Efficient RAG
Yufeng Wang, Lu wei, Haibin Ling
Retrieval-Augmented Generation (RAG) improves factuality but retrieving for every query often hurts quality while inflating tokens and latency. We propose Training-free Adaptive Re…
How well can off-the-shelf LLMs elucidate molecular structures from mass spectra using chain-of-thought reasoning?
Yufeng Wang, Lu Wei, Lin Liu +2
Mass spectrometry (MS) is a powerful analytical technique for identifying small molecules, yet determining complete molecular structures directly from tandem mass spectra (MS/MS) r…
XDIP: A Curated X-ray Absorption Spectrum Dataset for Iron-Containing Proteins
Yufeng Wang, Peiyao Wang, Lu Wei +6
Earth-abundant iron is an essential metal in regulating the structure and function of proteins. This study presents the development of a comprehensive X-ray Absorption Spectroscopy…
Variational Transformer Ansatz for the Density Operator of Steady States in Dissipative Quantum Many-Body Systems
Lu Wei, Zhian Jia, Yufeng Wang +2
The transformer architecture, known for capturing long-range dependencies and intricate patterns, has extended beyond natural language processing. Recently, it has attracted signif…