Search Results for author: Chi-Man Vong

Found 14 papers, 2 papers with code

GBRIP: Granular Ball Representation for Imbalanced Partial Label Learning

no code implementations19 Dec 2024 Jintao Huang, Yiu-ming Cheung, Chi-Man Vong, Wenbin Qian

GBRIP utilizes coarse-grained granular ball representation and multi-center loss to construct a granular ball-based nfeature space through unsupervised learning, effectively capturing the feature distribution within each class.

Partial Label Learning

C-Adapter: Adapting Deep Classifiers for Efficient Conformal Prediction Sets

1 code implementation12 Oct 2024 Kangdao Liu, Hao Zeng, Jianguo Huang, Huiping Zhuang, Chi-Man Vong, Hongxin Wei

Conformal prediction, as an emerging uncertainty quantification technique, typically functions as post-hoc processing for the outputs of trained classifiers.

Conformal Prediction Prediction +1

Spatial-Aware Conformal Prediction for Trustworthy Hyperspectral Image Classification

1 code implementation2 Sep 2024 Kangdao Liu, Tianhao Sun, Hao Zeng, Yongshan Zhang, Chi-Man Pun, Chi-Man Vong

Quantifying the certainty of model predictions is crucial for the safe usage of predictive models, and this limitation restricts their application in critical contexts where the cost of prediction errors is significant.

Classification Conformal Prediction +3

OE-BevSeg: An Object Informed and Environment Aware Multimodal Framework for Bird's-eye-view Vehicle Semantic Segmentation

no code implementations18 Jul 2024 Jian Sun, Yuqi Dai, Chi-Man Vong, Qing Xu, Shengbo Eben Li, Jianqiang Wang, Lei He, Keqiang Li

Based on prior knowledge about the main composition of the BEV surrounding environment varying with the increase of distance intervals, long-sequence global modeling is utilized to improve the model's understanding and perception of the environment.

Autonomous Driving BEV Segmentation +2

Weakly-supervised Semantic Segmentation via Dual-stream Contrastive Learning of Cross-image Contextual Information

no code implementations8 May 2024 Qi Lai, Chi-Man Vong

Weakly supervised semantic segmentation (WSSS) aims at learning a semantic segmentation model with only image-level tags.

Contrastive Learning Segmentation +2

Out-of-distribution Partial Label Learning

no code implementations11 Mar 2024 Jintao Huang, Yiu-ming Cheung, Chi-Man Vong

Partial Label Learning (PLL) tackles model learning from the data with inexact labels under the assumption that training and test objects are in the same distribution, i. e., closed-set scenario.

object-detection Object Detection +4

Graph based Label Enhancement for Multi-instance Multi-label learning

no code implementations21 Apr 2023 Houcheng Su, Jintao Huang, Daixian Liu, Rui Yan, Jiao Li, Chi-Man Vong

Multi-instance multi-label (MIML) learning is widely applicated in numerous domains, such as the image classification where one image contains multiple instances correlated with multiple logic labels simultaneously.

Image Classification Multi-Label Learning

Single-Stage Broad Multi-Instance Multi-Label Learning (BMIML) with Diverse Inter-Correlations and its application to medical image classification

no code implementations6 Sep 2022 Qi Lai, Jianhang Zhou, Yanfen Gan, Chi-Man Vong, DeShuang Huang

Existing MIML methods are useful in many applications but most of which suffer from relatively low accuracy and training efficiency due to several issues: i) the inter-label correlations(i. e., the probabilistic correlations between the multiple labels corresponding to an object) are neglected; ii) the inter-instance correlations (i. e., the probabilistic correlations of different instances in predicting the object label) cannot be learned directly (or jointly) with other types of correlations due to the missing instance labels; iii) diverse inter-correlations (e. g., inter-label correlations, inter-instance correlations) can only be learned in multiple stages.

Image Classification Medical Image Classification +1

Complexity-Optimized Sparse Bayesian Learning for Scalable Classification Tasks

no code implementations17 Jul 2021 Jiahua Luo, Chi-Man Wong, Chi-Man Vong

Sparse Bayesian Learning (SBL) constructs an extremely sparse probabilistic model with very competitive generalization.

Classification feature selection

Improving Conversational Recommendation System by Pretraining on Billions Scale of Knowledge Graph

no code implementations30 Apr 2021 Chi-Man Wong, Fan Feng, Wen Zhang, Chi-Man Vong, Hui Chen, Yichi Zhang, Peng He, Huan Chen, Kun Zhao, Huajun Chen

We first construct a billion-scale conversation knowledge graph (CKG) from information about users, items and conversations, and then pretrain CKG by introducing knowledge graph embedding method and graph convolution network to encode semantic and structural information respectively. To make the CTR prediction model sensible of current state of users and the relationship between dialogues and items, we introduce user-state and dialogue-interaction representations based on pre-trained CKG and propose K-DCN. In K-DCN, we fuse the user-state representation, dialogue-interaction representation and other normal feature representations via deep cross network, which will give the rank of candidate items to be recommended. We experimentally prove that our proposal significantly outperforms baselines and show it's real application in Alime.

Click-Through Rate Prediction Conversational Recommendation +3

Persistent Homology Based Graph Convolution Network for Fine-Grained 3D Shape Segmentation

no code implementations ICCV 2021 Chi-Chong Wong, Chi-Man Vong

Current deep learning and graph machine learning methods fail to tackle such challenges and thus provide inferior performance in fine-grained 3D analysis.

Segmentation Topological Data Analysis

3DViewGraph: Learning Global Features for 3D Shapes from A Graph of Unordered Views with Attention

no code implementations17 May 2019 Zhizhong Han, Xiyang Wang, Chi-Man Vong, Yu-Shen Liu, Matthias Zwicker, C. L. Philip Chen

Then, the content and spatial information of each pair of view nodes are encoded by a novel spatial pattern correlation, where the correlation is computed among latent semantic patterns.

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