Search Results for author: Haofeng Zhang

Found 18 papers, 7 papers with code

Revealing the Proximate Long-Tail Distribution in Compositional Zero-Shot Learning

no code implementations26 Dec 2023 Chenyi Jiang, Haofeng Zhang

Building upon this insight, we incorporate visual bias caused by compositions into the classifier's training and inference by estimating it as a proximate class prior.

Compositional Zero-Shot Learning

Partition-A-Medical-Image: Extracting Multiple Representative Sub-regions for Few-shot Medical Image Segmentation

1 code implementation20 Sep 2023 Yazhou Zhu, Shidong Wang, Tong Xin, Zheng Zhang, Haofeng Zhang

In this work, we present an approach to extract multiple representative sub-regions from a given support medical image, enabling fine-grained selection over the generated image regions.

Image Segmentation Medical Image Segmentation +1

Few-Shot Medical Image Segmentation via a Region-enhanced Prototypical Transformer

1 code implementation9 Sep 2023 Yazhou Zhu, Shidong Wang, Tong Xin, Haofeng Zhang

First, a subdivision strategy is introduced to produce a collection of regional prototypes from the foreground of the support prototype.

Few-Shot Learning Image Segmentation +3

Push the Boundary of SAM: A Pseudo-label Correction Framework for Medical Segmentation

no code implementations2 Aug 2023 Ziyi Huang, Hongshan Liu, Haofeng Zhang, Xueshen Li, Haozhe Liu, Fuyong Xing, Andrew Laine, Elsa Angelini, Christine Hendon, Yu Gan

One key advantage of our model is its ability to train deep networks using SAM-generated pseudo labels without relying on a set of expert-level annotations while attaining good segmentation performance.

Image Segmentation Medical Image Segmentation +4

Evolutionary Generalized Zero-Shot Learning

no code implementations23 Nov 2022 Dubing Chen, Haofeng Zhang, Yuming Shen, Yang Long, Ling Shao

In this work, we propose a novel Evolutionary Generalized Zero-Shot Learning setting, which (i) avoids the domain shift problem in inductive GZSL, and (ii) is more in line with the needs of real-world deployments than transductive GZSL.

Generalized Zero-Shot Learning

Weighted Contrastive Hashing

1 code implementation28 Sep 2022 Jiaguo Yu, Huming Qiu, Dubing Chen, Haofeng Zhang

The development of unsupervised hashing is advanced by the recent popular contrastive learning paradigm.

Contrastive Learning Data Augmentation +1

Cardiac Adipose Tissue Segmentation via Image-Level Annotations

no code implementations9 Jun 2022 Ziyi Huang, Yu Gan, Theresa Lye, Yanchen Liu, Haofeng Zhang, Andrew Laine, Elsa Angelini, Christine Hendon

To lessen the need for pixel-wise labeling, we develop a two-stage deep learning framework for cardiac adipose tissue segmentation using image-level annotations on OCT images of human cardiac substrates.

Segmentation Weakly-supervised Learning

Evaluating Aleatoric Uncertainty via Conditional Generative Models

no code implementations9 Jun 2022 Ziyi Huang, Henry Lam, Haofeng Zhang

To overcome these restrictions, we study conditional generative models for aleatoric uncertainty estimation.

Uncertainty Quantification

Zero-Shot Logit Adjustment

1 code implementation25 Apr 2022 Dubing Chen, Yuming Shen, Haofeng Zhang, Philip H. S. Torr

As a consequence of our derivation, the aforementioned two properties are incorporated into the classifier training as seen-unseen priors via logit adjustment.

 Ranked #1 on Generalized Zero-Shot Learning on AwA2 (Accuracy Unseen metric)

Bayesian Inference Generalized Zero-Shot Learning +1

Deconstructed Generation-Based Zero-Shot Model

1 code implementation24 Apr 2022 Dubing Chen, Yuming Shen, Haofeng Zhang, Philip H. S. Torr

Recent research on Generalized Zero-Shot Learning (GZSL) has focused primarily on generation-based methods.

Attribute Generalized Zero-Shot Learning

Learning to Hash Naturally Sorts

no code implementations31 Jan 2022 Jiaguo Yu, Yuming Shen, Menghan Wang, Haofeng Zhang, Philip H. S. Torr

In this paper, we tackle this problem by introducing Naturally-Sorted Hashing (NSH).

Contrastive Learning Deep Hashing

Quantifying Epistemic Uncertainty in Deep Learning

no code implementations23 Oct 2021 Ziyi Huang, Henry Lam, Haofeng Zhang

Uncertainty quantification is at the core of the reliability and robustness of machine learning.

Uncertainty Quantification

Conditional Coverage Estimation for High-quality Prediction Intervals

no code implementations1 Jan 2021 Ziyi Huang, Henry Lam, Haofeng Zhang

Deep learning has achieved state-of-the-art performance to generate high-quality prediction intervals (PIs) for uncertainty quantification in regression tasks.

Prediction Intervals Uncertainty Quantification +1

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