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Lu Wen

4 accepted papers

2024

DCL-Net: Dual Contrastive Learning Network for Semi-Supervised Multi-Organ Segmentation

ICASSP 2024accepted

Semi-supervised learning (SSL) is a sound measure to relieve the strict demand of abundant annotated datasets, especially for challenging multi-organ segmentation (MoS). However, most existing SSL methods predict pixels in a single image independently, ignoring the relations among images and categor…

Cited by 0SourceScholar
2024

Dream to Adapt: Meta Reinforcement Learning by Latent Context Imagination and MDP Imagination

RA-L 2024

Meta reinforcement learning (Meta RL) has been amply explored to quickly learn an unseen task by transferring previously learned knowledge from similar tasks. However, most state-of-the-art Meta RL algorithms require the meta-training tasks to have a dense coverage of the task distribution and a gre

Cited by 0SourceScholar
2024

Image2Points: A 3D Point-Based Context Clusters GAN for High-Quality Pet Image Reconstruction

ICASSP 2024accepted

To obtain high-quality Positron emission tomography (PET) images while minimizing radiation exposure, numerous methods have been proposed to reconstruct standard-dose PET (SPET) images from the corresponding low-dose PET (LPET) images. However, these methods heavily rely on voxel-based representatio…

Cited by 0SourceScholar
2022

Improved Robustness and Safety for Pre-Adaptation of Meta Reinforcement Learning with Prior Regularization

IROS 2022poster

Meta Reinforcement Learning (Meta-RL) has seen substantial advancements recently. In particular, off-policy methods were developed to improve the data efficiency of Meta-RL techniques. Probabilistic embeddings for actor-critic \boldsymbol{RL}\boldsymbol{RL} (PEARL) is a leading approach for multi-MD…

Cited by 3SourceScholar