← Search

Songmin Dai

5 accepted papers

2024

Generating and Reweighting Dense Contrastive Patterns for Unsupervised Anomaly Detection

AAAI 2024technical

Recent unsupervised anomaly detection methods often rely on feature extractors pretrained with auxiliary datasets or on well-crafted anomaly-simulated samples. However, this might limit their adaptability to an increasing set of anomaly detection tasks due to the priors in the selection of auxiliary…

Cited by 18SourcePDFScholar
2023

Active Negative Loss Functions for Learning with Noisy Labels

NeurIPS 2023poster

Robust loss functions are essential for training deep neural networks in the presence of noisy labels. Some robust loss functions use Mean Absolute Error (MAE) as its necessary component. For example, the recently proposed Active Passive Loss (APL) uses MAE as its passive loss function. However, MAE…

2023

GradPU: Positive-Unlabeled Learning via Gradient Penalty and Positive Upweighting

AAAI 2023technical

Positive-unlabeled learning is an essential problem in many real-world applications with only labeled positive and unlabeled data, especially when the negative samples are difficult to identify. Most existing positive-unlabeled learning methods will inevitably overfit the positive class to some exte…

Cited by 8SourcePDFScholar
2023

Hierarchical Semantic Contrast for Weakly Supervised Semantic Segmentation

IJCAI 2023poster

Weakly supervised semantic segmentation (WSSS) with image-level annotations has achieved great processes through class activation map (CAM). Since vanilla CAMs are hardly served as guidance to bridge the gap between full and weak supervision, recent studies explore semantic representations to make C…

2021

Improving Robustness of Facial Landmark Detection by Defending Against Adversarial Attacks

ICCV 2021poster

Many recent developments in facial landmark detection have been driven by stacking model parameters or augmenting annotations. However, three subsequent challenges remain, including 1) an increase in computational overhead, 2) the risk of overfitting caused by increasing model parameters, and 3) the…

Cited by 35PDFcodeScholar