Search Results for author: James Z. Wang

Found 31 papers, 11 papers with code

Incorporating simulated spatial context information improves the effectiveness of contrastive learning models

no code implementations26 Jan 2024 LiZhen Zhu, James Z. Wang, Wonseuk Lee, Brad Wyble

The historical spatial context of the agent provides a similarity signal for self-supervised contrastive learning.

Contrastive Learning

AI-SAM: Automatic and Interactive Segment Anything Model

1 code implementation5 Dec 2023 Yimu Pan, Sitao Zhang, Alison D. Gernand, Jeffery A. Goldstein, James Z. Wang

Interactive approaches, exemplified by the Segment Anything Model (SAM), have shown promise as pre-trained models.

Semantic Segmentation

Unlocking the Emotional World of Visual Media: An Overview of the Science, Research, and Impact of Understanding Emotion

no code implementations25 Jul 2023 James Z. Wang, Sicheng Zhao, Chenyan Wu, Reginald B. Adams, Michelle G. Newman, Tal Shafir, Rachelle Tsachor

The emergence of artificial emotional intelligence technology is revolutionizing the fields of computers and robotics, allowing for a new level of communication and understanding of human behavior that was once thought impossible.

Emotional Intelligence Emotion Recognition

Learning Emotion Representations from Verbal and Nonverbal Communication

1 code implementation CVPR 2023 Sitao Zhang, Yimu Pan, James Z. Wang

We present EmotionCLIP, the first pre-training paradigm to extract visual emotion representations from verbal and nonverbal communication using only uncurated data.

Contrastive Learning Emotion Recognition in Context

Bodily expressed emotion understanding through integrating Laban movement analysis

no code implementations5 Apr 2023 Chenyan Wu, Dolzodmaa Davaasuren, Tal Shafir, Rachelle Tsachor, James Z. Wang

Body movements carry important information about a person's emotions or mental state and are essential in daily communication.

Learning to Adapt to Online Streams with Distribution Shifts

no code implementations2 Mar 2023 Chenyan Wu, Yimu Pan, Yandong Li, James Z. Wang

Test-time adaptation (TTA) is a technique used to reduce distribution gaps between the training and testing sets by leveraging unlabeled test data during inference.

Benchmarking Meta-Learning +3

Asymmetry Disentanglement Network for Interpretable Acute Ischemic Stroke Infarct Segmentation in Non-Contrast CT Scans

1 code implementation30 Jun 2022 Haomiao Ni, Yuan Xue, Kelvin Wong, John Volpi, Stephen T. C. Wong, James Z. Wang, Xiaolei Huang

In this paper, we propose a novel Asymmetry Disentanglement Network (ADN) to automatically separate pathological asymmetries and intrinsic anatomical asymmetries in NCCTs for more effective and interpretable AIS segmentation.

Disentanglement Segmentation

HICEM: A High-Coverage Emotion Model for Artificial Emotional Intelligence

no code implementations15 Jun 2022 Benjamin Wortman, James Z. Wang

Unlike theory of emotion, which has been the historical focus in psychology, emotion models are a descriptive tools.

Descriptive Emotional Intelligence +3

Patcher: Patch Transformers with Mixture of Experts for Precise Medical Image Segmentation

1 code implementation3 Jun 2022 Yanglan Ou, Ye Yuan, Xiaolei Huang, Stephen T. C. Wong, John Volpi, James Z. Wang, Kelvin Wong

We also propose a new mixture-of-experts (MoE) based decoder, which treats the feature maps from the encoder as experts and selects a suitable set of expert features to predict the label for each pixel.

Image Segmentation Lesion Segmentation +2

Using Navigational Information to Learn Visual Representations

no code implementations10 Feb 2022 LiZhen Zhu, Brad Wyble, James Z. Wang

Children learn to build a visual representation of the world from unsupervised exploration and we hypothesize that a key part of this learning ability is the use of self-generated navigational information as a similarity label to drive a learning objective for self-supervised learning.

Contrastive Learning Representation Learning +1

Deep Rank-Consistent Pyramid Model for Enhanced Crowd Counting

2 code implementations13 Jan 2022 Jiaqi Gao, Zhizhong Huang, Yiming Lei, Hongming Shan, James Z. Wang, Fei-Yue Wang, Junping Zhang

Specifically, we propose a Deep Rank-consistEnt pyrAmid Model (DREAM), which makes full use of rank consistency across coarse-to-fine pyramid features in latent spaces for enhanced crowd counting with massive unlabeled images.

Crowd Counting

Pareto Efficient Fairness in Supervised Learning: From Extraction to Tracing

no code implementations4 Apr 2021 Mohammad Mahdi Kamani, Rana Forsati, James Z. Wang, Mehrdad Mahdavi

The proposed PEF notion is definition-agnostic, meaning that any well-defined notion of fairness can be reduced to the PEF notion.

Bilevel Optimization Decision Making +1

Targeted Data-driven Regularization for Out-of-Distribution Generalization

1 code implementation1 Aug 2020 Mohammad Mahdi Kamani, Sadegh Farhang, Mehrdad Mahdavi, James Z. Wang

The proposed framework, named targeted data-driven regularization (TDR), is model- and dataset-agnostic and employs a target dataset that resembles the desired nature of test data in order to guide the learning process in a coupled manner.

Bilevel Optimization Meta-Learning +1

PaDNet: Pan-Density Crowd Counting

no code implementations7 Nov 2018 Yukun Tian, Yiming Lei, Junping Zhang, James Z. Wang

We propose a novel framework, the Pan-Density Network (PaDNet), for pan-density crowd counting.

Crowd Counting

ARBEE: Towards Automated Recognition of Bodily Expression of Emotion In the Wild

1 code implementation28 Aug 2018 Yu Luo, Jianbo Ye, Reginald B. Adams, Jr., Jia Li, Michelle G. Newman, James Z. Wang

A system to model the emotional expressions based on bodily movements, named ARBEE (Automated Recognition of Bodily Expression of Emotion), has also been developed and evaluated.

Action Recognition

Rethinking the Smaller-Norm-Less-Informative Assumption in Channel Pruning of Convolution Layers

3 code implementations ICLR 2018 Jianbo Ye, Xin Lu, Zhe Lin, James Z. Wang

Model pruning has become a useful technique that improves the computational efficiency of deep learning, making it possible to deploy solutions in resource-limited scenarios.

Computational Efficiency

Probabilistic Multigraph Modeling for Improving the Quality of Crowdsourced Affective Data

1 code implementation4 Jan 2017 Jianbo Ye, Jia Li, Michelle G. Newman, Reginald B. Adams, Jr., James Z. Wang

We proposed a probabilistic approach to joint modeling of participants' reliability and humans' regularity in crowdsourced affective studies.

Detecting Dominant Vanishing Points in Natural Scenes with Application to Composition-Sensitive Image Retrieval

no code implementations15 Aug 2016 Zihan Zhou, Farshid Farhat, James Z. Wang

To overcome this difficulty, we propose a novel vanishing point detection method that exploits global structures in the scene via contour detection.

Contour Detection Image Retrieval +1

Modeling Photographic Composition via Triangles

no code implementations31 May 2016 Zihan Zhou, Siqiong He, Jia Li, James Z. Wang

The capacity of automatically modeling photographic composition is valuable for many real-world machine vision applications such as digital photography, image retrieval, image understanding, and image aesthetics assessment.

Image Retrieval Retrieval

Storm Detection by Visual Learning Using Satellite Images

no code implementations1 Mar 2016 Yu Zhang, Stephen Wistar, Jia Li, Michael Steinberg, James Z. Wang

In our system, we extract and summarize important visual storm evidence from satellite image sequences in the way that meteorologists interpret the images.

Weather Forecasting

Fast Discrete Distribution Clustering Using Wasserstein Barycenter with Sparse Support

2 code implementations30 Sep 2015 Jianbo Ye, Panruo Wu, James Z. Wang, Jia Li

In a variety of research areas, the weighted bag of vectors and the histogram are widely used descriptors for complex objects.

Clustering Computational Efficiency

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