Search Results for author: Ou wu

Found 20 papers, 4 papers with code

Data Optimization in Deep Learning: A Survey

1 code implementation25 Oct 2023 Ou wu, Rujing Yao

Consequently, a huge number of studies in the existing literature have focused on the data aspect in deep learning tasks.

Data Augmentation Fairness

Rethinking Class Imbalance in Machine Learning

no code implementations6 May 2023 Ou wu

Imbalance learning is a subfield of machine learning that focuses on learning tasks in the presence of class imbalance.

Fairness Meta-Learning

Implicit Counterfactual Data Augmentation for Deep Neural Networks

no code implementations26 Apr 2023 Xiaoling Zhou, Ou wu

Machine-learning models are prone to capturing the spurious correlations between non-causal attributes and classes, with counterfactual data augmentation being a promising direction for breaking these spurious associations.

counterfactual Data Augmentation +2

Combining Adversaries with Anti-adversaries in Training

no code implementations25 Apr 2023 Xiaoling Zhou, Nan Yang, Ou wu

On the basis of our theoretical findings, a more general learning objective that combines adversaries and anti-adversaries with varied bounds on each training sample is presented.

Fairness Meta-Learning

Understanding Difficulty-based Sample Weighting with a Universal Difficulty Measure

no code implementations12 Jan 2023 Xiaoling Zhou, Ou wu, Weiyao Zhu, Ziyang Liang

In this study, we theoretically prove that the generalization error of a sample can be used as a universal difficulty measure.

Class-Level Logit Perturbation

1 code implementation13 Sep 2022 Mengyang Li, Fengguang Su, Ou wu, Ji Zhang

However, limited studies have explicitly explored for the perturbation of logit vectors.

Data Augmentation Image Classification +1

Exploring the Learning Difficulty of Data Theory and Measure

1 code implementation16 May 2022 Weiyao Zhu, Ou wu, Fengguang Su, Yingjun Deng

As learning difficulty is crucial for machine learning (e. g., difficulty-based weighting learning strategies), previous literature has proposed a number of learning difficulty measures.

Tackling the Imbalance for GNNs

no code implementations17 Oct 2021 Rui Wang, Weixuan Xiong, Qinghu Hou, Ou wu

Different from deep neural networks for non-graph data classification, graph neural networks (GNNs) leverage the information exchange between nodes (or samples) when representing nodes.

Classification

Which Samples Should be Learned First: Easy or Hard?

no code implementations11 Oct 2021 Xiaoling Zhou, Ou wu

Factors including the distribution of samples' learning difficulties and the validation data determine which samples should be learned first in a learning task.

WHICH SAMPLES SHOULD BE LEARNED FIRST:EASY OR HARD?

no code implementations29 Sep 2021 Xiaoling Zhou, Ou wu

Second, a flexible weighting scheme is proposed to overcome the defects of existing schemes.

Compensation Learning

no code implementations26 Jul 2021 Rujing Yao, Ou wu

Furthermore, a family of new learning algorithms can be obtained by plugging the compensation learning into existing learning algorithms.

BIG-bench Machine Learning Graph Classification +2

A Mathematical Foundation for Robust Machine Learning based on Bias-Variance Trade-off

no code implementations10 Jun 2021 Ou wu, Weiyao Zhu, Yingjun Deng, Haixiang Zhang, Qinghu Hou

Conducting a clear comparison for existing RML algorithms in dealing with different samples is difficult due to lack of a unified theoretical framework for RML.

BIG-bench Machine Learning

Improving the Expressive Power of Graph Neural Network with Tinhofer Algorithm

no code implementations5 Apr 2021 Alan J. X. Guo, Qing-Hu Hou, Ou wu

In recent years, Graph Neural Network (GNN) has bloomly progressed for its power in processing graph-based data.

AI Marker-based Large-scale AI Literature Mining

no code implementations1 Nov 2020 Rujing Yao, Yingchun Ye, Ji Zhang, Shuxiao Li, Ou wu

Inspired by the idea of molecular markers tracing in the field of biochemistry, three named entities, namely, methods, datasets and metrics are used as AI markers for AI literature.

Clustering Literature Mining +1

Method and Dataset Entity Mining in Scientific Literature: A CNN + Bi-LSTM Model with Self-attention

no code implementations26 Oct 2020 Linlin Hou, Ji Zhang, Ou wu, Ting Yu, Zhen Wang, Zhao Li, Jianliang Gao, Yingchun Ye, Rujing Yao

We finally apply our model on PAKDD papers published from 2009-2019 to mine insightful results from scientific papers published in a longer time span.

Data Augmentation

Deep Human Answer Understanding for Natural Reverse QA

no code implementations1 Dec 2019 Rujing Yao, Linlin Hou, Lei Yang, Jie Gui, Qing Yin, Ou wu

This study focuses on a reverse question answering (QA) procedure, in which machines proactively raise questions and humans supply the answers.

Question Answering

Method and Dataset Mining in Scientific Papers

no code implementations29 Nov 2019 Rujing Yao, Linlin Hou, Yingchun Ye, Ou wu, Ji Zhang, Jian Wu

In the field of machine learning, the involved methods (M) and datasets (D) are key information in papers.

Semi-interactive Attention Network for Answer Understanding in Reverse-QA

no code implementations12 Jan 2019 Qing Yin, Guan Luo, Xiaodong Zhu, QinGhua Hu, Ou wu

Question answering (QA) is an important natural language processing (NLP) task and has received much attention in academic research and industry communities.

Question Answering text-classification

Detecting Adversarial Examples via Key-based Network

no code implementations2 Jun 2018 Pinlong Zhao, Zhouyu Fu, Ou wu, QinGhua Hu, Jun Wang

In contrast to existing defense methods, the proposed method does not require knowledge of the process for generating adversarial examples and can be applied to defend against different types of attacks.

$ρ$-hot Lexicon Embedding-based Two-level LSTM for Sentiment Analysis

1 code implementation21 Mar 2018 Ou Wu, Tao Yang, Mengyang Li, Ming Li

Lexical cues are useful for sentiment analysis, and they have been utilized in conventional studies.

Sentiment Analysis Sentiment Classification +1

Cannot find the paper you are looking for? You can Submit a new open access paper.