Search Results for author: Ying Wu

Found 52 papers, 7 papers with code

Using CPI in Loss Given Default Forecasting Models for Commercial Real Estate Portfolio

no code implementations23 Feb 2024 Ying Wu, Garvit Arora, Xuan Mei

Forecasting the loss given default (LGD) for defaulted Commercial Real Estate (CRE) loans poses a significant challenge due to the extended resolution and workout time associated with such defaults, particularly in CCAR and CECL framework where the utilization of post-default information, including macroeconomic variables (MEVs) such as unemployment (UER) and various rates, is restricted.

GAN-driven Electromagnetic Imaging of 2-D Dielectric Scatterers

no code implementations16 Feb 2024 Ehtasham Naseer, Ali Imran Sandhu, Muhammad Adnan Siddique, Waqas W. Ahmed, Mohamed Farhat, Ying Wu

The images reconstructed at the output of the inverse network are validated through comparison with outputs from the forward neural network, addressing the non-uniqueness challenge inherent to electromagnetic (EM) imaging problems.

Design and implementation of multiprotocol framework for residential prosumer incorporation in flexibility markets

no code implementations6 Feb 2024 Miguel Gayo, Francisco Javier Rodríguez, Carlos Santos, Ying Wu, Yanpeng Wu, Juan C. Vasquez, Josep M. Guerrero

This research presents a novel approach to address the challenges of managing flexibility strategies in residential areas, providing a practical solution for prosumers to actively participate in optimizing energy consumption and enhancing the stability and quality of the electricity system amidst the growing integration of distributed renewable energy.

An Exploration to the Correlation Structure and Clustering of Macroeconomic Variables

no code implementations18 Jan 2024 Garvit Arora, Shubhangi Tiwari, Ying Wu, Xuan Mei

One of these interesting observations is that, for a list of 132 transformations derived from 44 targeted MEVs that cover 5 different aspects of the U. S. economy (which takes as a subset the 10+ key MEVs published by FRB), compared to benign years where there are typically 20-25 clusters, during the great financial crisis (GFC), i. e., 2007-2010, they exhibited a more synchronized and less diversified pattern of movement, forming roughly 15 clusters.

Clustering Management

Active Open-Vocabulary Recognition: Let Intelligent Moving Mitigate CLIP Limitations

no code implementations28 Nov 2023 Lei Fan, Jianxiong Zhou, Xiaoying Xing, Ying Wu

Active recognition, which allows intelligent agents to explore observations for better recognition performance, serves as a prerequisite for various embodied AI tasks, such as grasping, navigation and room arrangements.

Navigate

Evidential Active Recognition: Intelligent and Prudent Open-World Embodied Perception

no code implementations23 Nov 2023 Lei Fan, Mingfu Liang, Yunxuan Li, Gang Hua, Ying Wu

Active recognition enables robots to intelligently explore novel observations, thereby acquiring more information while circumventing undesired viewing conditions.

Uncertainty Quantification

Causal Rule Learning: Enhancing the Understanding of Heterogeneous Treatment Effect via Weighted Causal Rules

no code implementations10 Oct 2023 Ying Wu, Hanzhong Liu, Kai Ren, Xiangyu Chang

In the rule discovery phase, we utilize a causal forest to generate a pool of causal rules with corresponding subgroup average treatment effects.

Descriptive

A Grammatical Compositional Model for Video Action Detection

no code implementations4 Oct 2023 Zhijun Zhang, Xu Zou, Jiahuan Zhou, Sheng Zhong, Ying Wu

Analysis of human actions in videos demands understanding complex human dynamics, as well as the interaction between actors and context.

Action Detection Human Dynamics

Flexible Visual Recognition by Evidential Modeling of Confusion and Ignorance

no code implementations ICCV 2023 Lei Fan, Bo Liu, Haoxiang Li, Ying Wu, Gang Hua

First, prediction uncertainty should be separately quantified as confusion depicting inter-class uncertainties and ignorance identifying out-of-distribution samples.

Decision Making

ALUM: Adversarial Data Uncertainty Modeling from Latent Model Uncertainty Compensation

no code implementations29 Mar 2023 Wei Wei, Jiahuan Zhou, Hongze Li, Ying Wu

Thus, the critical data uncertainty and model uncertainty caused by noisy data can be readily quantified for improving model robustness.

Adaptive Modeling of Uncertainties for Traffic Forecasting

no code implementations16 Mar 2023 Ying Wu, Yongchao Ye, Adnan Zeb, James J. Q. Yu, Zheng Wang

We evaluated QuanTraffic by applying it to five representative DNN models for traffic forecasting across seven public datasets.

Management Traffic Prediction +1

An empirical study of the effect of background data size on the stability of SHapley Additive exPlanations (SHAP) for deep learning models

no code implementations24 Apr 2022 Han Yuan, Mingxuan Liu, Lican Kang, Chenkui Miao, Ying Wu

In our empirical study on the MIMIC-III dataset, we show that the two core explanations - SHAP values and variable rankings fluctuate when using different background datasets acquired from random sampling, indicating that users cannot unquestioningly trust the one-shot interpretation from SHAP.

SA-VQA: Structured Alignment of Visual and Semantic Representations for Visual Question Answering

no code implementations25 Jan 2022 Peixi Xiong, Quanzeng You, Pei Yu, Zicheng Liu, Ying Wu

As a multi-modality task, it is challenging since it requires not only visual and textual understanding, but also the ability to align cross-modality representations.

Question Answering Visual Question Answering

Morphable Detector for Object Detection on Demand

1 code implementation ICCV 2021 Xiangyun Zhao, Xu Zou, Ying Wu

Once an MD is learned, it is able to use a few samples of a novel class to directly compute its prototype to fulfill the online morphing process.

Object object-detection +1

Toward a Fairness-Aware Scoring System for Algorithmic Decision-Making

no code implementations21 Sep 2021 Yi Yang, Ying Wu, Mei Li, Xiangyu Chang, Yong Tan

Then, we transform the social welfare maximization problem into the risk minimization task in machine learning, and derive a fairness-aware scoring system with the help of mixed integer programming.

Decision Making Fairness +1

Lifespan associations of resting-state brain functional networks with ADHD symptoms

no code implementations28 Jul 2021 Rong Wang, Yongchen Fan, Ying Wu, Yu-Feng Zang, Changsong Zhou

Our findings reveal a lifespan association of brain networks with ADHD symptoms and provide potential shared neural bases of distinct ADHD symptoms in children and adults.

Unsupervised Embedding Learning from Uncertainty Momentum Modeling

no code implementations19 Jul 2021 Jiahuan Zhou, Yansong Tang, Bing Su, Ying Wu

We justify that the performance limitation is caused by the gradient vanishing on these sample outliers.

Transition behavior of the seizure dynamics modulated by the astrocyte inositol triphosphate noise

no code implementations26 May 2021 Jiajia Li, Peihua Feng, Liang Zhao, Junying Chen, Mengmeng Du, Yangyang Yu, Jian Song, Ying Wu

Our simulation results show that the increase of the IP3 noise intensity induces the depolarization-block epileptic seizures together with an increase in neuronal firing frequency.

Beyond Visual Attractiveness: Physically Plausible Single Image HDR Reconstruction for Spherical Panoramas

no code implementations24 Mar 2021 Wei Wei, Li Guan, Yue Liu, Hao Kang, Haoxiang Li, Ying Wu, Gang Hua

By the proposed physical regularization, our method can generate HDRs which are not only visually appealing but also physically plausible.

HDR Reconstruction Single-shot HDR Reconstruction

Multi-dimensional wave steering with higher-order topological phononic crystal

no code implementations17 Feb 2021 Changqing Xu, Zeguo Chen, Guanqing Zhang, Guancong Ma, Ying Wu

The recent discovery and realizations of higher-order topological insulators enrich the fundamental studies on topological phases.

Applied Physics

Abnormal topological refraction into free medium at sub-wavelength scale in valley phononic crystal plates

no code implementations18 Jan 2021 Linyun Yang, Kaiping Yu, Bernard Bonello, Wei Wang, Ying Wu

In this work we propose a topological valley phononic crystal plate and we extensively investigate the refraction of valley modes into the surrounding homogeneous medium.

Applied Physics

Contrastive Learning for Label Efficient Semantic Segmentation

no code implementations ICCV 2021 Xiangyun Zhao, Raviteja Vemulapalli, Philip Andrew Mansfield, Boqing Gong, Bradley Green, Lior Shapira, Ying Wu

While recent Convolutional Neural Network (CNN) based semantic segmentation approaches have achieved impressive results by using large amounts of labeled training data, their performance drops significantly as the amount of labeled data decreases.

Contrastive Learning Segmentation +1

FLAR: A Unified Prototype Framework for Few-Sample Lifelong Active Recognition

no code implementations ICCV 2021 Lei Fan, Peixi Xiong, Wei Wei, Ying Wu

To address this demand, in this paper, we propose a unified framework towards Few-sample Lifelong Active Recognition (FLAR), which aims at performing active recognition on progressively arising novel categories that only have few training samples.

Knowledge Distillation Scene Recognition

Contrastive Learning for Label-Efficient Semantic Segmentation

no code implementations13 Dec 2020 Xiangyun Zhao, Raviteja Vemulapalli, Philip Mansfield, Boqing Gong, Bradley Green, Lior Shapira, Ying Wu

While recent Convolutional Neural Network (CNN) based semantic segmentation approaches have achieved impressive results by using large amounts of labeled training data, their performance drops significantly as the amount of labeled data decreases.

Contrastive Learning Segmentation +1

Deterministic and probabilistic deep learning models for inverse design of broadband acoustic cloak

no code implementations28 Oct 2020 Waqas W. Ahmed, Mohamed Farhat, Xiangliang Zhang, Ying Wu

Concealing an object from incoming waves (light and/or sound) remained science fiction for a long time due to the absence of wave-shielding materials in nature.

Applied Physics Computational Physics

Object Detection with a Unified Label Space from Multiple Datasets

no code implementations ECCV 2020 Xiangyun Zhao, Samuel Schulter, Gaurav Sharma, Yi-Hsuan Tsai, Manmohan Chandraker, Ying Wu

To address this challenge, we design a framework which works with such partial annotations, and we exploit a pseudo labeling approach that we adapt for our specific case.

Object object-detection +1

Exposing Deep-faked Videos by Anomalous Co-motion Pattern Detection

no code implementations11 Aug 2020 Gengxing Wang, Jiahuan Zhou, Ying Wu

Recent deep learning based video synthesis approaches, in particular with applications that can forge identities such as "DeepFake", have raised great security concerns.

Anomaly Detection Data Compression +1

Recognizing Part Attributes with Insufficient Data

1 code implementation ICCV 2019 Xiangyun Zhao, Yi Yang, Feng Zhou, Xiao Tan, Yuchen Yuan, Yingze Bao, Ying Wu

Although great progress has been made to apply object-level recognition, recognizing the attributes of parts remains less applicable since the training data for part attributes recognition is usually scarce especially for internet-scale applications.

Attribute

Bimodal Stereo: Joint Shape and Pose Estimation from Color-Depth Image Pair

no code implementations16 May 2019 Chi Zhang, Yuehu Liu, Ying Wu, Qilin Zhang, Le Wang

In the pipeline, the estimated shape is refined by the shape prior from the given depth map under the estimated pose.

Pose Estimation

Conscious Inference for Object Detection

no code implementations27 Sep 2018 Jiahuan Zhou, Nikolaos Karianakis, Ying Wu, Gang Hua

Current Convolutional Neural Network (CNN)-based object detection models adopt strictly feedforward inference to predict the final detection results.

6D Pose Estimation using RGB Object +2

Deeply Learned Compositional Models for Human Pose Estimation

no code implementations ECCV 2018 Wei Tang, Pei Yu, Ying Wu

This results in a network with a hierarchical compositional architecture and bottom-up/top-down inference stages.

Pose Estimation

Exploiting Vector Fields for Geometric Rectification of Distorted Document Images

no code implementations ECCV 2018 Gaofeng MENG, Yuanqi SU, Ying Wu, Shiming Xiang, Chunhong Pan

This paper proposes a segment-free method for geometric rectification of a distorted document image captured by a hand-held camera.

Semi-supervised Transfer Learning for Image Rain Removal

1 code implementation CVPR 2019 Wei Wei, Deyu Meng, Qian Zhao, Zongben Xu, Ying Wu

However, previous deep learning methods need to pre-collect a large set of image pairs with/without synthesized rain for training, which tends to make the neural network be biased toward learning the specific patterns of the synthesized rain, while be less able to generalize to real test samples whose rain types differ from those in the training data.

Single Image Deraining Transfer Learning

Learning Low-Dimensional Temporal Representations

no code implementations ICML 2018 Bing Su, Ying Wu

Low-dimensional discriminative representations enhance machine learning methods in both performance and complexity, motivating supervised dimensionality reduction (DR) that transforms high-dimensional data to a discriminative subspace.

Supervised dimensionality reduction

Fictitious GAN: Training GANs with Historical Models

1 code implementation ECCV 2018 Hao Ge, Yin Xia, Xu Chen, Randall Berry, Ying Wu

Inspired by the fictitious play learning process, a novel training method, referred to as Fictitious GAN, is introduced.

Efficient Online Local Metric Adaptation via Negative Samples for Person Re-Identification

no code implementations ICCV 2017 Jiahuan Zhou, Pei Yu, Wei Tang, Ying Wu

In contrast to these methods, this paper advocates a different paradigm: part of the learning can be performed online but with nominal costs, so as to achieve online metric adaptation for different input probes.

Metric Learning Person Re-Identification

Learning Reconstruction-Based Remote Gaze Estimation

no code implementations CVPR 2016 Pei Yu, Jiahuan Zhou, Ying Wu

A common treatment is to use the same local reconstruction in the two spaces, i. e., the reconstruction weights in the appearance space are transferred to the gaze space for gaze reconstruction.

Gaze Estimation

Heteroscedastic Max-Min Distance Analysis

no code implementations CVPR 2015 Bing Su, Xiaoqing Ding, Changsong Liu, Ying Wu

Many discriminant analysis methods such as LDA and HLDA actually maximize the average pairwise distances between classes, which often causes the class separation problem.

Dimensionality Reduction

Unifying Spatial and Attribute Selection for Distracter-Resilient Tracking

no code implementations CVPR 2014 Nan Jiang, Ying Wu

This paper presents a novel method to jointly determine the best spatial location and the optimal metric.

Attribute

Cross-view Action Modeling, Learning and Recognition

no code implementations CVPR 2014 Jiang wang, Xiaohan Nie, Yin Xia, Ying Wu, Song-Chun Zhu

We present a novel multiview spatio-temporal AND-OR graph (MST-AOG) representation for cross-view action recognition, i. e., the recognition is performed on the video from an unknown and unseen view.

Action Recognition Temporal Action Localization

Learning Fine-grained Image Similarity with Deep Ranking

6 code implementations CVPR 2014 Jiang Wang, Yang song, Thomas Leung, Chuck Rosenberg, Jinbin Wang, James Philbin, Bo Chen, Ying Wu

This paper proposes a deep ranking model that employs deep learning techniques to learn similarity metric directly from images. It has higher learning capability than models based on hand-crafted features.

General Classification

Scalable Matting: A Sub-linear Approach

no code implementations15 Apr 2014 Philip G. Lee, Ying Wu

However, matting by graph Laplacian is still very difficult to solve and gets much harder as the image size grows: current iterative methods slow down as $\mathcal{O}\left(n^2 \right)$ in the resolution $n$.

Image Matting

Large Displacement Optical Flow from Nearest Neighbor Fields

no code implementations CVPR 2013 Zhuoyuan Chen, Hailin Jin, Zhe Lin, Scott Cohen, Ying Wu

We use approximate nearest neighbor fields to compute an initial motion field and use a robust algorithm to compute a set of similarity transformations as the motion candidates for segmentation.

Motion Estimation Motion Segmentation +2

Detecting and Aligning Faces by Image Retrieval

no code implementations CVPR 2013 Xiaohui Shen, Zhe Lin, Jonathan Brandt, Ying Wu

In order to overcome these challenges, we present a novel and robust exemplarbased face detector that integrates image retrieval and discriminative learning.

Attribute Face Alignment +5

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