Publications (45)
On Pseudo-Labeling for Class-Mismatch Semi-Supervised Learning
Lu Han, Han-Jia Ye, De-Chuan Zhan
When there are unlabeled Out-Of-Distribution (OOD) data from other classes, Semi-Supervised Learning (SSL) methods suffer from severe performance degradation and even get worse tha…
Complete Structural Determination of Mesostructural Dodecagonal Quasicrystalline Particles
Xueliang Zhang, Xi Wang, Nobuhisa Fujita +2
Quasicrystals have revolutionized our understanding of order in solids by demonstrating exotic structural and physicochemical properties with diverse potential applications. Despit…
Rethinking ANN-based Retrieval: Multifaceted Learnable Index for Large-scale Recommendation System
Jiang Zhang, Yubo Wang, Wei Chang +14
Approximate nearest neighbor (ANN) search is widely used in the retrieval stage of large-scale recommendation systems. In this stage, candidate items are indexed using their learne…
Abnormal Signal Recognition with Time-Frequency Spectrogram: A Deep Learning Approach
Tingyan Kuang, Huichao Chen, Lu Han +3
With the increasingly complex and changeable electromagnetic environment, wireless communication systems are facing jamming and abnormal signal injection, which significantly affec…
Accelerating drug repurposing for COVID-19 via modeling drug mechanism of action with large scale gene-expression profiles
Lu Han, G. C. Shan, B. F. Chu +4
The novel coronavirus disease, named COVID-19, emerged in China in December 2019, and has rapidly spread around the world. It is clearly urgent to fight COVID-19 at global scale. T…
One-Embedding-Fits-All: Efficient Zero-Shot Time Series Forecasting by a Model Zoo
Hao-Nan Shi, Ting-Ji Huang, Lu Han +2
The proliferation of Time Series Foundation Models (TSFMs) has significantly advanced zero-shot forecasting, enabling predictions for unseen time series without task-specific fine-…
Ultrawide Band Gap β-Ga2O3 Nanomechanical Resonators with Spatially Visualized Multimode Motion
Xu-Qian Zheng, Jaesung Lee, Subrina Rafique +4
Beta gallium oxide (β-Ga2O3) is an emerging ultrawide band gap (4.5 - 4.9 eV) semiconductor with attractive properties for future power electronics, optoelectronics, and sensors f…
Stochastic Equation of Motion Approach to Fermionic Dissipative Dynamics. II. Numerical Implementation
Arif Ullah, Lu Han, Yun-An Yan +3
This paper provides a detailed account of the numerical implementation of the stochastic equation of motion (SEOM) method for the dissipative dynamics of fermionic open quantum sys…
Single Diamond Structured Titania Scaffold
Chao Wang, Congcong Cui, Quanzheng Deng +6
The single diamond (SD) network, discovered in beetle and weevil skeletons, is the 'holy grail' of photonic materials with the widest complete bandgap known to date. However, the t…
UniCA: Unified Covariate Adaptation for Time Series Foundation Model
Lu Han, Yu Liu, Lan Li +9
Time Series Foundation Models (TSFMs) have achieved remarkable success through large-scale pretraining. However, their design primarily targets real-valued series, limiting their a…
OmniAD: Detect and Understand Industrial Anomaly via Multimodal Reasoning
Shifang Zhao, Yiheng Lin, Lu Han +2
While anomaly detection has made significant progress, generating detailed analyses that incorporate industrial knowledge remains a challenge. To address this gap, we introduce Omn…
Molly: Making Large Language Model Agents Solve Python Problem More Logically
Rui Xiao, Jiong Wang, Lu Han +2
Applying large language models (LLMs) as teaching assists has attracted much attention as an integral part of intelligent education, particularly in computing courses. To reduce th…
Advanced spectral clustering for heterogeneous data in credit risk monitoring systems
Lu Han, Mengyan Li, Jiping Qiang +1
Heterogeneous data, which encompass both numerical financial variables and textual records, present substantial challenges for credit monitoring. To address this issue, we propose…
Inelastic electron scattering at large angles: the phonon polariton contribution
Hongbin Yang, Paul Zeiger, Andrea KoneÄná +11
We explore the inelastic electron scattering in SrTiO3, PbTiO3, and SiC in their phonon energy range, challenging the assumption that phonon polaritons are excluded at large angles…
Superconductivity and phase diagram in Sr-doped LaSrNiO thin films
Bo Hao, Maosen Wang, Wenjie Sun +10
Recent studies have demonstrated ambient pressure superconductivity in compressively strained LaNiO thin films, yet the phase diagram of heterovalent dopingcri…
Sharingan: Extract User Action Sequence from Desktop Recordings
Yanting Chen, Yi Ren, Xiaoting Qin +7
Video recordings of user activities, particularly desktop recordings, offer a rich source of data for understanding user behaviors and automating processes. However, despite advanc…
General laws of reflection and refraction for subwavelength phase grating
Zhaona Wang, Yanyan Sun, Lu Han +1
The general reflection and refraction laws at the metasurface with the abrupt phase shift were derived by two different methods of Fermat's principle and the boundary conditions re…
MIETT: Multi-Instance Encrypted Traffic Transformer for Encrypted Traffic Classification
Xu-Yang Chen, Lu Han, De-Chuan Zhan +1
Network traffic includes data transmitted across a network, such as web browsing and file transfers, and is organized into packets (small units of data) and flows (sequences of pac…
Giant Polarization and Abnormal Flexural Deformation in Bent Freestanding Perovskite Oxides
Songhua Cai, Yingzhuo Lun, Dianxiang Ji +15
Recent realizations of ultrathin freestanding perovskite oxides offer a unique platform to probe novel properties in two-dimensional oxides. Here, we observed a giant flexoelectric…
β-Ga2O3 NEMS Oscillator for Real-Time Middle Ultraviolet (MUV) Light Detection
Xu-Qian Zheng, Jaesung Lee, Subrina Rafique +5
We report on the first beta gallium oxide (β-Ga2O3) crystal feedback oscillator built by employing a vibrating β-Ga2O3 nanoresonator as the frequency reference for real-time midd…
SOFTS: Efficient Multivariate Time Series Forecasting with Series-Core Fusion
Lu Han, Xu-Yang Chen, Han-Jia Ye +1
Multivariate time series forecasting plays a crucial role in various fields such as finance, traffic management, energy, and healthcare. Recent studies have highlighted the advanta…
Integrated Multivariate Segmentation Tree for Heterogeneous Credit Data Analysis in Small- and Medium-Sized Enterprises
Lu Han, Xiuying Wang
Traditional decision tree models, which rely exclusively on numerical variables, often face challenges in handling high-dimensional data and are limited in their ability to incorpo…
Bulk Crystal Growth and Single-Crystal-to-Single-Crystal Phase Transitions in the Averievite CsClCu5V2O10
Chao Liu, Chao Ma, Tieyan Chang +7
Quasi-two-dimensional averievites with triangle-kagome-triangle trilayers are of interest due to their rich structural and magnetic transitions and strong spin frustration that are…
Stochastic Equation of Motion Approach to Fermionic Dissipative Dynamics. I. Formalism
Lu Han, Arif Ullah, Yun-An Yan +3
In this work, we establish formally exact stochastic equations of motion (SEOM) theory to describe the dissipative dynamics of fermionic open systems. The construction of the SEOM…
: A High-Valent Insulating Palladate
Qingqing Yang, Ning Guo, Tieyan Chang +10
A high-valent palladate, , has been synthesized for the first time. Single crystals with dimensions of 20 m on edge were successfully grown using the flux method…
Deep Learning-Assisted Fourier Analysis for High-Efficiency Structural Design: A Case Study on Three-Dimensional Photonic Crystals Enumeration
Congcong Cui, Guangfeng Wei, Matthias Saba +2
The geometric design of structures with optimized physical and chemical properties is one of the core topics in materials science. However, designing new functional materials is ch…
Approximate the individually fair k-center with outliers
Lu Han, Dachuan Xu, Yicheng Xu +1
In this paper, we propose and investigate the individually fair -center with outliers (IFCO). In the IFCO, we are given an -sized vertex set in a metric space, as well…
Low-temperature aqueous solution growth of the acousto-optic TeO2 single crystals
Lu Han, Chao Liu, Xiaoli Wang +3
-TeO2 is widely used in acousto-optic devices due to its excellent physical properties. Conventionally, -TeO2 single crystals were grown using melt methods. Here, we report…
MotionInput v2.0 supporting DirectX: A modular library of open-source gesture-based machine learning and computer vision methods for interacting and controlling existing software with a webcam
Ashild Kummen, Guanlin Li, Ali Hassan +14
Touchless computer interaction has become an important consideration during the COVID-19 pandemic period. Despite progress in machine learning and computer vision that allows for a…
Spin-polarized chiral ZnIn2S4 for targeted solar-driven CO2 reduction to acetic acid
Yongping Cui, Yuanbo Li, Zhi-qiang Wang +10
Acetic acid, an important industrial chemical, is a key target product for CO2 reduction due to its dual role in carbon utilization and chemical feedstock supply. Although photocat…
WTFormer: A Wavelet Conformer Network for MIMO Speech Enhancement with Spatial Cues Peservation
Lu Han, Junqi Zhao, Renhua Peng
Current multi-channel speech enhancement systems mainly adopt single-output architecture, which face significant challenges in preserving spatio-temporal signal integrity during mu…
Plasmonic dark field microscopy with a polymer substrate
Yikai Chen, Douguo Zhang, Lu Han +4
In this letter, a plasmonic dark field microscopy taking advantages of the polymer loaded surface plasmon polariton waveguide (PLSPPW) is experimentally demonstrated. The dye molec…
Cascade of phase transitions and large magnetic anisotropy in a triangle-kagome-triangle trilayer antiferromagnet
Chao Liu, Tieyan Chang, Shilei Wang +9
Spins in strongly frustrated systems are of intense interest due to the emergence of intriguing quantum states including superconductivity and quantum spin liquid. Herein we report…
QACP: An Annotated Question Answering Dataset for Assisting Chinese Python Programming Learners
Rui Xiao, Lu Han, Xiaoying Zhou +3
In online learning platforms, particularly in rapidly growing computer programming courses, addressing the thousands of students' learning queries requires considerable human cost.…
AudioTurbo: Fast Text-to-Audio Generation with Rectified Diffusion
Junqi Zhao, Jinzheng Zhao, Haohe Liu +5
Diffusion models have significantly improved the quality and diversity of audio generation but are hindered by slow inference speed. Rectified flow enhances inference speed by lear…
SepSeq: A Training-Free Framework for Long Numerical Sequence Processing in LLMs
Jie Sun, Yu Liu, Lu Han +9
While transformer-based Large Language Models (LLMs) theoretically support massive context windows, they suffer from severe performance degradation when processing long numerical s…
Twice Class Bias Correction for Imbalanced Semi-Supervised Learning
Lan Li, Bowen Tao, Lu Han +2
Differing from traditional semi-supervised learning, class-imbalanced semi-supervised learning presents two distinct challenges: (1) The imbalanced distribution of training samples…
Learning Robust Precipitation Forecaster by Temporal Frame Interpolation
Lu Han, Xu-Yang Chen, Han-Jia Ye +1
Recent advances in deep learning have significantly elevated weather prediction models. However, these models often falter in real-world scenarios due to their sensitivity to spati…
Revisiting Unsupervised Meta-Learning via the Characteristics of Few-Shot Tasks
Han-Jia Ye, Lu Han, De-Chuan Zhan
Meta-learning has become a practical approach towards few-shot image classification, where "a strategy to learn a classifier" is meta-learned on labeled base classes and can be app…
DongbaMIE: A Multimodal Information Extraction Dataset for Evaluating Semantic Understanding of Dongba Pictograms
Xiaojun Bi, Shuo Li, Junyao Xing +7
Dongba pictographic is the only pictographic script still in use in the world. Its pictorial ideographic features carry rich cultural and contextual information. However, due to th…
Stochastic Representation of Non-Markovian Fermionic Quantum Dissipation
Lu Han, Vladimir Chernyak, Yun-An Yan +2
Quantum Brownian motion plays a fundamental role in many areas of modern physics. In the path-integral formulation, the environmental quantum fluctuations driving the system dynami…
Negative differential resistance and magnetoresistance in zigzag borophene nanoribbons
Jiayi Liu, Changpeng Chen, Lu Han +2
We investigate the transport properties of pristine zigzag-edged borophene nanoribbons (ZBNRs) of different widths, using the fist-principles calculations. We choose ZBNRs with wid…
Electron transfer under the Floquet modulation in donor-bridge-acceptor systems
Yu Su, Zi-Hao Chen, Haojie Zhu +4
Electron transfer (ET) processes are of broad interest in modern chemistry. With the advancements of experimental techniques, one may modulate the ET via such as the light-matter i…
Augmentation Component Analysis: Modeling Similarity via the Augmentation Overlaps
Lu Han, Han-Jia Ye, De-Chuan Zhan
Self-supervised learning aims to learn a embedding space where semantically similar samples are close. Contrastive learning methods pull views of samples together and push differen…
The Capacity and Robustness Trade-off: Revisiting the Channel Independent Strategy for Multivariate Time Series Forecasting
Lu Han, Han-Jia Ye, De-Chuan Zhan
Multivariate time series data comprises various channels of variables. The multivariate forecasting models need to capture the relationship between the channels to accurately predi…