Search Results for author: Qiuyu Zhu

Found 14 papers, 6 papers with code

Multi-stage feature decorrelation constraints for improving CNN classification performance

1 code implementation24 Aug 2023 Qiuyu Zhu, Hao Wang, Xuewen Zu, Chengfei Liu

Considering that there are many layers in CNN, through experimental comparison and analysis, MFD Loss acts on multiple front layers of CNN, constrains the output features of each layer and each channel, and performs supervision training jointly with classification loss function during network training.

Effective Out-of-Distribution Detection in Classifier Based on PEDCC-Loss

no code implementations10 Apr 2022 Qiuyu Zhu, Guohui Zheng, Yingying Yan

In this method, there is no need to preprocess the input samples and the computational burden of the algorithm is reduced.

Out-of-Distribution Detection Out of Distribution (OOD) Detection

A Softmax-free Loss Function Based on Predefined Optimal-distribution of Latent Features for Deep Learning Classifier

1 code implementation25 Nov 2021 Qiuyu Zhu, Xuewen Zu

The loss function only restricts the latent features of the samples, including the norm-adaptive Cosine distance between the latent feature vector of the sample and the center of the predefined evenly-distributed class, and the correlation between the latent features of the samples.

Classification

Single Underwater Image Enhancement Using an Analysis-Synthesis Network

no code implementations20 Aug 2021 Zhengyong Wang, Liquan Shen, Mei Yu, Yufei Lin, Qiuyu Zhu

The proposed framework includes an analysis network and a synthesis network, one for priors exploration and another for priors integration.

Image Enhancement Image Generation

TITA: A Two-stage Interaction and Topic-Aware Text Matching Model

no code implementations NAACL 2021 Xingwu Sun, Yanling Cui, Hongyin Tang, Qiuyu Zhu, Fuzheng Zhang, Beihong Jin

To tackle this problem, we define a three-level relevance in keyword-document matching task: topic-aware relevance, partially-relevance and irrelevance.

Text Matching Vocal Bursts Valence Prediction

Generation and frame characteristics of predefined evenly-distributed class centroids for pattern classification

no code implementations2 May 2021 Haiping Hu, Yingying Yan, Qiuyu Zhu, Guohui Zheng

Predefined evenly-distributed class centroids (PEDCC) can be widely used in models and algorithms of pattern classification, such as CNN classifiers, classification autoencoders, clustering, and semi-supervised learning, etc.

Incremental Learning

Risk-Constrained Thompson Sampling for CVaR Bandits

no code implementations16 Nov 2020 Joel Q. L. Chang, Qiuyu Zhu, Vincent Y. F. Tan

The multi-armed bandit (MAB) problem is a ubiquitous decision-making problem that exemplifies the exploration-exploitation tradeoff.

Decision Making Thompson Sampling

Thompson Sampling Algorithms for Mean-Variance Bandits

2 code implementations ICML 2020 Qiuyu Zhu, Vincent Y. F. Tan

The multi-armed bandit (MAB) problem is a classical learning task that exemplifies the exploration-exploitation tradeoff.

Decision Making Thompson Sampling

Semi-supervised learning method based on predefined evenly-distributed class centroids

no code implementations13 Jan 2020 Qiuyu Zhu, Tiantian Li

Meanwhile, for unlabeled samples, we also use KL divergence to constrain the consistency of the network predictions between unlabeled and augmented samples.

Data Augmentation General Classification +1

Incremental Classifier Learning Based on PEDCC-Loss and Cosine Distance

no code implementations11 Jun 2019 Qiuyu Zhu, Zikuang He, Xin Ye

In this paper, we introduce an ensemble method of incremental classifier to alleviate this problem, which is based on the cosine distance between the output feature and the pre-defined center, and can let each task to be preserved in different networks.

Incremental Learning Knowledge Distillation

An Image Clustering Auto-Encoder Based on Predefined Evenly-Distributed Class Centroids and MMD Distance

3 code implementations10 Jun 2019 Qiuyu Zhu, Zhengyong Wang

The algorithm uses PEDCC (Predefined Evenly-Distributed Class Centroids) as the clustering centers, which ensures the inter-class distance of latent features is maximal, and adds data distribution constraint, data augmentation constraint, auto-encoder reconstruction constraint and Sobel smooth constraint to improve the clustering performance.

Clustering Data Augmentation +1

A New Loss Function for CNN Classifier Based on Pre-defined Evenly-Distributed Class Centroids

1 code implementation12 Apr 2019 Qiuyu Zhu, Pengju Zhang, Xin Ye

With the development of convolutional neural networks (CNNs) in recent years, the network structure has become more and more complex and varied, and has achieved very good results in pattern recognition, image classification, object detection and tracking.

Classification Face Recognition +4

A Classification Supervised Auto-Encoder Based on Predefined Evenly-Distributed Class Centroids

no code implementations1 Feb 2019 Qiuyu Zhu, Ruixin Zhang

In this paper, a new autoencoder model - classification supervised autoencoder (CSAE) based on predefined evenly-distributed class centroids (PEDCC) is proposed.

Classification General Classification

HENet:A Highly Efficient Convolutional Neural Networks Optimized for Accuracy, Speed and Storage

1 code implementation7 Mar 2018 Qiuyu Zhu, Ruixin Zhang

In order to enhance the real-time performance of convolutional neural networks(CNNs), more and more researchers are focusing on improving the efficiency of CNN.

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