Search Results for author: Yiming Xu

Found 28 papers, 1 papers with code

Sensing-assisted Robust SWIPT for Mobile Energy Harvesting Receivers

no code implementations15 Feb 2024 Yiming Xu, Dongfang Xu, Shenghui Song

Simultaneous wireless information and power transfer (SWIPT) has been proposed to offer communication services and transfer power to the energy harvesting receiver (EHR) concurrently.

Robust Design

Controllable Diverse Sampling for Diffusion Based Motion Behavior Forecasting

no code implementations6 Feb 2024 Yiming Xu, Hao Cheng, Monika Sester

These issues lead the existing methods to a loss of predictive diversity and adherence to the scene constraints.

Autonomous Driving Denoising +1

Recent Advances in Model-Based Fault Diagnosis for Lithium-Ion Batteries: A Comprehensive Review

no code implementations30 Jan 2024 Yiming Xu, Xiaohua Ge, Ruohan Guo, Weixiang Shen

This paper provides a comprehensive review on the model-based fault diagnosis methods for LIBs.

Statistical inference for pairwise comparison models

no code implementations16 Jan 2024 Ruijian Han, Wenlu Tang, Yiming Xu

Pairwise comparison models have been widely used for utility evaluation and ranking across various fields.

Efficient Toxic Content Detection by Bootstrapping and Distilling Large Language Models

no code implementations13 Dec 2023 Jiang Zhang, Qiong Wu, Yiming Xu, Cheng Cao, Zheng Du, Konstantinos Psounis

Furthermore, student LMs fine-tuned with rationales extracted via DToT outperform baselines on all datasets with up to 16. 9\% accuracy improvement, while being more than 60x smaller than conventional LLMs.

In-Context Learning

ICN: Interactive Convolutional Network for Forecasting Travel Demand of Shared Micromobility

no code implementations24 Jun 2023 Yiming Xu, Qian Ke, Xiaojian Zhang, Xilei Zhao

This paper proposes a deep learning model named Interactive Convolutional Network (ICN) to forecast spatiotemporal travel demand for shared micromobility.

Management

Joint BS Selection, User Association, and Beamforming Design for Network Integrated Sensing and Communication

no code implementations9 May 2023 Yiming Xu, Dongfang Xu, Lei Xie, Shenghui Song

Different from conventional radar, the cellular network in the integrated sensing and communication (ISAC) system enables collaborative sensing by multiple sensing nodes, e. g., base stations (BSs).

Situational-Aware Multi-Graph Convolutional Recurrent Network (SA-MGCRN) for Travel Demand Forecasting During Wildfires

no code implementations13 Apr 2023 Xiaojian Zhang, Xilei Zhao, Yiming Xu, Ruggiero Lovreglio, Daniel Nilsson

Based on the travel demand inferred from the GPS data, we develop a new deep learning model, i. e., Situational-Aware Multi-Graph Convolutional Recurrent Network (SA-MGCRN), along with a model updating scheme to achieve real-time forecasting of travel demand during wildfire evacuations.

APAM: Adaptive Pre-training and Adaptive Meta Learning in Language Model for Noisy Labels and Long-tailed Learning

no code implementations6 Feb 2023 Sunyi Chi, Bo Dong, Yiming Xu, Zhenyu Shi, Zheng Du

Lastly, our sensitive analysis emphasizes the capability of the proposed framework to handle the long-tailed problem and mitigate the negative impact of noisy labels.

Contrastive Learning Language Modelling +1

Wasserstein Archetypal Analysis

no code implementations25 Oct 2022 Katy Craig, Braxton Osting, Dong Wang, Yiming Xu

We prove a consistency result for the regularized problem, ensuring that if the data are iid samples from a probability measure, then as the number of samples is increased, a subsequence of the archetype points converges to the archetype points for the limiting data distribution, almost surely.

Examining spatial heterogeneity of ridesourcing demand determinants with explainable machine learning

no code implementations16 Sep 2022 Xiaojian Zhang, Xiang Yan, Zhengze Zhou, Yiming Xu, Xilei Zhao

The growing significance of ridesourcing services in recent years suggests a need to examine the key determinants of ridesourcing demand.

Stable and Compact Face Recognition via Unlabeled Data Driven Sparse Representation-Based Classification

no code implementations4 Nov 2021 XiaoHui Yang, Zheng Wang, Huan Wu, Licheng Jiao, Yiming Xu, Haolin Chen

The proposed model aims to mine the hidden semantic information and intrinsic structure information of all available data, which is suitable for few labeled samples and proportion imbalance between labeled samples and unlabeled samples problems in frontal face recognition.

Face Recognition Sparse Representation-based Classification

Probabilistic methods for approximate archetypal analysis

no code implementations12 Aug 2021 Ruijian Han, Braxton Osting, Dong Wang, Yiming Xu

Archetypal analysis is an unsupervised learning method for exploratory data analysis.

A bandit-learning approach to multifidelity approximation

no code implementations29 Mar 2021 Yiming Xu, Vahid Keshavarzzadeh, Robert M. Kirby, Akil Narayan

Multifidelity approximation is an important technique in scientific computation and simulation.

Randomized weakly admissible meshes

no code implementations11 Jan 2021 Yiming Xu, Akil Narayan

A weakly admissible mesh (WAM) on a continuum real-valued domain is a sequence of discrete grids such that the discrete maximum norm of polynomials on the grid is comparable to the supremum norm of polynomials on the domain.

Numerical Analysis Numerical Analysis Probability Computation

Open Set Domain Adaptation by Extreme Value Theory

no code implementations22 Dec 2020 Yiming Xu, Diego Klabjan

In this paper, we tackle the open set domain adaptation problem under the assumption that the source and the target label spaces only partially overlap, and the task becomes when the unknown classes exist, how to detect the target unknown classes and avoid aligning them with the source domain.

Domain Adaptation

Concept Drift and Covariate Shift Detection Ensemble with Lagged Labels

no code implementations8 Dec 2020 Yiming Xu, Diego Klabjan

Extensive experiments on structured and unstructured data for different type of data changes establish that our method consistently outperforms the state-of-the-art methods by a large margin.

Consistency of archetypal analysis

no code implementations16 Oct 2020 Braxton Osting, Dong Wang, Yiming Xu, Dominique Zosso

Archetypal analysis is an unsupervised learning method that uses a convex polytope to summarize multivariate data.

Analysis of The Ratio of $\ell_1$ and $\ell_2$ Norms in Compressed Sensing

no code implementations13 Apr 2020 Yiming Xu, Akil Narayan, Hoang Tran, Clayton G. Webster

We first propose a novel criterion that guarantees that an $s$-sparse signal is the local minimizer of the $\ell_1/\ell_2$ objective; our criterion is interpretable and useful in practice.

A General Pairwise Comparison Model for Extremely Sparse Networks

no code implementations20 Feb 2020 Ruijian Han, Yiming Xu, Kani Chen

Under this setup, we show that the maximum likelihood estimator for the latent score vector of the subjects is uniformly consistent under a near-minimal condition on network sparsity.

Open-Ended Visual Question Answering by Multi-Modal Domain Adaptation

no code implementations Findings of the Association for Computational Linguistics 2020 Yiming Xu, Lin Chen, Zhongwei Cheng, Lixin Duan, Jiebo Luo

A straightforward solution is to fine-tune a pre-trained source model by using those limited labeled target data, but it usually cannot work well due to the considerable difference between the data distributions of the source and target domains.

Domain Adaptation Question Answering +1

Automatic Ontology Learning from Domain-Specific Short Unstructured Text Data

no code implementations7 Mar 2019 Yiming Xu, Dnyanesh Rajpathak, Ian Gibbs, Diego Klabjan

Ontology learning is non-trivial due to several reasons with limited amount of prior research work that automatically learns a domain specific ontology from data.

General Classification Information Retrieval +1

k-Nearest Neighbors by Means of Sequence to Sequence Deep Neural Networks and Memory Networks

no code implementations27 Apr 2018 Yiming Xu, Diego Klabjan

In this paper, we propose two families of models built on a sequence to sequence model and a memory network model to mimic the k-Nearest Neighbors model, which generate a sequence of labels, a sequence of out-of-sample feature vectors and a final label for classification, and thus they could also function as oversamplers.

General Classification

Low Rank Variation Dictionary and Inverse Projection Group Sparse Representation Model for Breast Tumor Classification

no code implementations10 Mar 2018 Xiaohui Yang, Xiaoying Jiang, WenMing Wu, Juan Zhang, Dan Long, Funa Zhou, Yiming Xu

The proposed low-rank variation dictionary tackles tumor recognition problem from the viewpoint of detecting and using variations in gene expression profiles of normal and patients, rather than directly using these samples.

General Classification

The Effective Field Theory of Dark Matter Direct Detection

3 code implementations15 Mar 2012 A. Liam Fitzpatrick, Wick Haxton, Emanuel Katz, Nicholas Lubbers, Yiming Xu

We extend and explore the general non-relativistic effective theory of dark matter (DM) direct detection.

High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics

Cannot find the paper you are looking for? You can Submit a new open access paper.