93 citations · 390 across the 47 of their papers we have counts for
16 papers · 1 filter
Mobile defects as mediated states for charge-carrier trapping in metal halide perovskites quantum dots
Xiao-Yi Liu, Wei-Ping Li, Yu Cui +4
The migration motion of defects in metal halide perovskites quantum dots (MHPQDs) results in charge-carrier trapping become more complicated. We study two-step trapping mediated by…
HyperBO+: Pre-training a universal prior for Bayesian optimization with hierarchical Gaussian processes
Zhou Fan, Xinran Han, Zi Wang
Bayesian optimization (BO), while proved highly effective for many black-box function optimization tasks, requires practitioners to carefully select priors that well model their fu…
Optical absorption of angulon in metal halide perovskites
Jia-Wei Wu, Yu Cui, Shao-Juan Li +1
We theoretically study the optical absorption of an angulon in the metal halide perovskites (MHP) based on the improved Devreese-Huybrechts-Lemmens model, where the formation of qu…
Speech Enhancement with Fullband-Subband Cross-Attention Network
Jun Chen, Wei Rao, Zilin Wang +5
FullSubNet has shown its promising performance on speech enhancement by utilizing both fullband and subband information. However, the relationship between fullband and subband in F…
Alternating Deep Low-Rank Approach for Exponential Function Reconstruction and Its Biomedical Magnetic Resonance Applications
Yihui Huang, Zi Wang, Xinlin Zhang +5
Undersampling can accelerate the signal acquisition but at the cost of bringing in artifacts. Removing these artifacts is a fundamental problem in signal processing and this task i…
A Faithful Deep Sensitivity Estimation for Accelerated Magnetic Resonance Imaging
Zi Wang, Haoming Fang, Chen Qian +8
Magnetic resonance imaging (MRI) is an essential diagnostic tool that suffers from prolonged scan time. To alleviate this limitation, advanced fast MRI technology attracts extensiv…
Microscopic theory of Raman scattering for the rotational organic cation in metal halide perovskites
Yu Cui, Yi-Yan Liu, Jia-Pei Deng +4
A gap exists in microscopic understanding the dynamic properties of the rotational organic cation (ROC) in the inorganic framework of the metal halide perovskites (MHP) to date. He…
Charge carriers trapping by the full-configuration defects in metal halide perovskites quantum dots
Xiao-Yi Liu, Yu Cui, Jia-Pei Deng +6
Metal halide perovskites quantum dots (MHPQDs) have aroused enormous interesting in the photovoltaic and photoelectric because of their marvelous properties and size characteristic…
Plex: Towards Reliability using Pretrained Large Model Extensions
Dustin Tran, Jeremiah Liu, Michael W. Dusenberry +23
A recent trend in artificial intelligence is the use of pretrained models for language and vision tasks, which have achieved extraordinary performance but also puzzling failures. P…
Pre-training helps Bayesian optimization too
Zi Wang, George E. Dahl, Kevin Swersky +6
Bayesian optimization (BO) has become a popular strategy for global optimization of many expensive real-world functions. Contrary to a common belief that BO is suited to optimizing…
Towards Learning Universal Hyperparameter Optimizers with Transformers
Yutian Chen, Xingyou Song, Chansoo Lee +9
Meta-learning hyperparameter optimization (HPO) algorithms from prior experiments is a promising approach to improve optimization efficiency over objective functions from a similar…
Ear Wearable (Earable) User Authentication via Acoustic Toothprint
Zi Wang, Jie Yang
Earables (ear wearables) is rapidly emerging as a new platform encompassing a diverse range of personal applications. The traditional authentication methods hence become less appli…
FullSubNet+: Channel Attention FullSubNet with Complex Spectrograms for Speech Enhancement
Jun Chen, Zilin Wang, Deyi Tuo +3
Previously proposed FullSubNet has achieved outstanding performance in Deep Noise Suppression (DNS) Challenge and attracted much attention. However, it still encounters issues such…
A Paired Phase and Magnitude Reconstruction for Advanced Diffusion-Weighted Imaging
Chen Qian, Zi Wang, Xinlin Zhang +9
Objective: Multi-shot interleaved echo planer imaging can obtain diffusion-weighted images (DWI) with high spatial resolution and low distortion, but suffers from ghost artifacts i…
A Quantitative Geometric Approach to Neural-Network Smoothness
Zi Wang, Gautam Prakriya, Somesh Jha
Fast and precise Lipschitz constant estimation of neural networks is an important task for deep learning. Researchers have recently found an intrinsic trade-off between the accurac…
Infrared optical absorption of Frohlich polaron in metal halide perovskites
Yu Cui, Xiao-Yi Liu, Xu-Fei Ma +4
The formation of Frohlich polaron in metal halide perovskites, arising from the charge carrierlongitudinal optical (LO) phonon coupling, has been proposed to explain their exceptio…