Search Results for author: Chih-Wei Chang

Found 6 papers, 3 papers with code

Synthetic CT Generation from MRI using 3D Transformer-based Denoising Diffusion Model

1 code implementation31 May 2023 Shaoyan Pan, Elham Abouei, Jacob Wynne, Tonghe Wang, Richard L. J. Qiu, Yuheng Li, Chih-Wei Chang, Junbo Peng, Justin Roper, Pretesh Patel, David S. Yu, Hui Mao, Xiaofeng Yang

The proposed model consists of two processes: a forward process which adds Gaussian noise to real CT scans, and a reverse process in which a shifted-window transformer V-net (Swin-Vnet) denoises the noisy CT scans conditioned on the MRI from the same patient to produce noise-free CT scans.

Anatomy Denoising +3

Cycle-guided Denoising Diffusion Probability Model for 3D Cross-modality MRI Synthesis

no code implementations28 Apr 2023 Shaoyan Pan, Chih-Wei Chang, Junbo Peng, Jiahan Zhang, Richard L. J. Qiu, Tonghe Wang, Justin Roper, Tian Liu, Hui Mao, Xiaofeng Yang

The two DDPMs exchange random latent noise in the reverse processes, which helps to regularize both DDPMs and generate matching images in two modalities.

Denoising Image-to-Image Translation

RubyStar: A Non-Task-Oriented Mixture Model Dialog System

no code implementations8 Nov 2017 Huiting Liu, Tao Lin, Hanfei Sun, Weijian Lin, Chih-Wei Chang, Teng Zhong, Alexander Rudnicky

RubyStar is a dialog system designed to create "human-like" conversation by combining different response generation strategies.

Question Answering Response Generation +1

Cost-Sensitive Reference Pair Encoding for Multi-Label Learning

1 code implementation29 Nov 2016 Yao-Yuan Yang, Kuan-Hao Huang, Chih-Wei Chang, Hsuan-Tien Lin

Label space expansion for multi-label classification (MLC) is a methodology that encodes the original label vectors to higher dimensional codes before training and decodes the predicted codes back to the label vectors during testing.

Active Learning Multi-Label Classification +1

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