Search Results for author: Xiang Yan

Found 21 papers, 4 papers with code

Emotion Classification of COVID-19 Chinese Microblogs based on the Emotion Category Description

no code implementations CCL 2021 Guo Xianwei, Lai Hua, Xiang Yan, Yu Zhengtao, Huang Yuxin

Emotion classification of mi-croblogs is a process of reading the content of microblogs and combining the semantics of emo-tion categories to understand whether it contains a certain emotion.

Classification Emotion Classification +1

DestripeCycleGAN: Stripe Simulation CycleGAN for Unsupervised Infrared Image Destriping

no code implementations14 Feb 2024 Shiqi Yang, Hanlin Qin, Shuai Yuan, Xiang Yan, Hossein Rahmani

However, when applied to the infrared destriping task, it becomes challenging for the vanilla auxiliary generator to consistently produce vertical noise under unsupervised constraints.

Denoising Image Restoration

SCTransNet: Spatial-channel Cross Transformer Network for Infrared Small Target Detection

1 code implementation28 Jan 2024 Shuai Yuan, Hanlin Qin, Xiang Yan, Naveed Akhtar, Ajmal Mian

In the proposed SCTBs, the outputs of all encoders are interacted with cross transformer to generate mixed features, which are redistributed to all decoders to effectively reinforce semantic differences between the target and clutter at full scales.

ARCNet: An Asymmetric Residual Wavelet Column Correction Network for Infrared Image Destriping

no code implementations28 Jan 2024 Shuai Yuan, Hanlin Qin, Xiang Yan, Naveed Akhtar, Shiqi Yang, Shuowen Yang

Our neural model leverages a novel downsampler, residual haar discrete wavelet transform (RHDWT), stripe directional prior knowledge and data-driven learning to induce a model with enriched feature representation of stripe noise and background.

Feature Upsampling Image Reconstruction

A Hierarchical Destroy and Repair Approach for Solving Very Large-Scale Travelling Salesman Problem

no code implementations9 Aug 2023 Zhang-Hua Fu, Sipeng Sun, Jintong Ren, Tianshu Yu, Haoyu Zhang, Yuanyuan Liu, Lingxiao Huang, Xiang Yan, Pinyan Lu

Fair comparisons based on nineteen famous large-scale instances (with 10, 000 to 10, 000, 000 cities) show that HDR is highly competitive against existing state-of-the-art TSP algorithms, in terms of both efficiency and solution quality.

Computational Efficiency

Coordinated Dynamic Bidding in Repeated Second-Price Auctions with Budgets

no code implementations13 Jun 2023 Yurong Chen, Qian Wang, Zhijian Duan, Haoran Sun, Zhaohua Chen, Xiang Yan, Xiaotie Deng

To the best of our knowledge, we are the first to consider bidder coordination in online repeated auctions with constraints.

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.

On the Convergence of Fictitious Play: A Decomposition Approach

no code implementations3 May 2022 Yurong Chen, Xiaotie Deng, Chenchen Li, David Mguni, Jun Wang, Xiang Yan, Yaodong Yang

Fictitious play (FP) is one of the most fundamental game-theoretical learning frameworks for computing Nash equilibrium in $n$-player games, which builds the foundation for modern multi-agent learning algorithms.

MVP-Human Dataset for 3D Human Avatar Reconstruction from Unconstrained Frames

1 code implementation24 Apr 2022 Xiangyu Zhu, Tingting Liao, Jiangjing Lyu, Xiang Yan, Yunfeng Wang, Kan Guo, Qiong Cao, Stan Z. Li, Zhen Lei

In this paper, we consider a novel problem of reconstructing a 3D human avatar from multiple unconstrained frames, independent of assumptions on camera calibration, capture space, and constrained actions.

Camera Calibration

A Context-Integrated Transformer-Based Neural Network for Auction Design

1 code implementation29 Jan 2022 Zhijian Duan, Jingwu Tang, Yutong Yin, Zhe Feng, Xiang Yan, Manzil Zaheer, Xiaotie Deng

One of the central problems in auction design is developing an incentive-compatible mechanism that maximizes the auctioneer's expected revenue.

Multi-initialization Optimization Network for Accurate 3D Human Pose and Shape Estimation

no code implementations24 Dec 2021 Zhiwei Liu, Xiangyu Zhu, Lu Yang, Xiang Yan, Ming Tang, Zhen Lei, Guibo Zhu, Xuetao Feng, Yan Wang, Jinqiao Wang

In the second stage, we design a mesh refinement transformer (MRT) to respectively refine each coarse reconstruction result via a self-attention mechanism.

Ranked #64 on 3D Human Pose Estimation on 3DPW (MPJPE metric)

3D human pose and shape estimation 3D Reconstruction

A Game-Theoretic Analysis of the Empirical Revenue Maximization Algorithm with Endogenous Sampling

no code implementations NeurIPS 2020 Xiaotie Deng, Ron Lavi, Tao Lin, Qi Qi, Wenwei Wang, Xiang Yan

The Empirical Revenue Maximization (ERM) is one of the most important price learning algorithms in auction design: as the literature shows it can learn approximately optimal reserve prices for revenue-maximizing auctioneers in both repeated auctions and uniform-price auctions.

Distilling Black-Box Travel Mode Choice Model for Behavioral Interpretation

no code implementations30 Oct 2019 Xilei Zhao, Zhengze Zhou, Xiang Yan, Pascal Van Hentenryck

Furthermore, the paper provides a comprehensive comparison of student models with the benchmark model (decision tree) and the teacher model (gradient boosting trees) to quantify the fidelity and accuracy of the students' interpretations.

BIG-bench Machine Learning

Modeling Heterogeneity in Mode-Switching Behavior Under a Mobility-on-Demand Transit System: An Interpretable Machine Learning Approach

no code implementations8 Feb 2019 Xilei Zhao, Xiang Yan, Pascal Van Hentenryck

The results on the case study show that the machine-learning classifier, together with model-agnostic interpretation tools, provides valuable insights on travel mode switching behavior for different individuals and population segments.

BIG-bench Machine Learning Decision Making +1

Cost-Effective Incentive Allocation via Structured Counterfactual Inference

no code implementations7 Feb 2019 Romain Lopez, Chenchen Li, Xiang Yan, Junwu Xiong, Michael. I. Jordan, Yuan Qi, Le Song

We address a practical problem ubiquitous in modern marketing campaigns, in which a central agent tries to learn a policy for allocating strategic financial incentives to customers and observes only bandit feedback.

counterfactual Counterfactual Inference +2

Modeling Stated Preference for Mobility-on-Demand Transit: A Comparison of Machine Learning and Logit Models

no code implementations4 Nov 2018 Xilei Zhao, Xiang Yan, Alan Yu, Pascal Van Hentenryck

In other words, how to draw behavioral insights from the high-performance "black-box" machine-learning models remains largely unsolved in the field of travel behavior modeling.

BIG-bench Machine Learning

Latent Dirichlet Allocation for Internet Price War

no code implementations23 Aug 2018 Chenchen Li, Xiang Yan, Xiaotie Deng, Yuan Qi, Wei Chu, Le Song, Junlong Qiao, Jianshan He, Junwu Xiong

Then we develop a variant of Latent Dirichlet Allocation (LDA) to infer latent variables under the current market environment, which represents the preferences of customers and strategies of competitors.

Unsupervised Deep Multi-focus Image Fusion

no code implementations19 Jun 2018 Xiang Yan, Syed Zulqarnain Gilani, Hanlin Qin, Ajmal Mian

Convolutional neural networks have recently been used for multi-focus image fusion.

SSIM

Deep Keyframe Detection in Human Action Videos

no code implementations26 Apr 2018 Xiang Yan, Syed Zulqarnain Gilani, Hanlin Qin, Mingtao Feng, Liang Zhang, Ajmal Mian

Detecting representative frames in videos based on human actions is quite challenging because of the combined factors of human pose in action and the background.

Directed Regression

no code implementations NeurIPS 2009 Yi-Hao Kao, Benjamin V. Roy, Xiang Yan

When used to guide decisions, linear regression analysis typically involves estimation of regression coefficients via ordinary least squares and their subsequent use to make decisions.

regression

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