Search Results for author: Yitian Xu

Found 8 papers, 2 papers with code

A Safe Screening Rule with Bi-level Optimization of $ν$ Support Vector Machine

no code implementations4 Mar 2024 Zhiji Yang, Wanyi Chen, huan zhang, Yitian Xu, Lei Shi, Jianhua Zhao

Support vector machine (SVM) has achieved many successes in machine learning, especially for a small sample problem.

DKiS: Decay weight invertible image steganography with private key

1 code implementation30 Nov 2023 Hang Yang, Yitian Xu, Xuhua Liu

Image steganography, defined as the practice of concealing information within another image, traditionally encounters security challenges when its methods become publicly known or are under attack.

Image Steganography

PRIS: Practical robust invertible network for image steganography

1 code implementation24 Sep 2023 Hang Yang, Yitian Xu, Xuhua Liu, Xiaodong Ma

Most of the existing image steganography methods have low hiding robustness when the container images affected by distortion.

Image Steganography

Multi-task nonparallel support vector machine for classification

no code implementations5 Apr 2022 Zongmin Liu, Yitian Xu

In addition, the property and sensitivity of the parameter in model are further explored.

Classification Computational Efficiency

Multi-Class Classification from Single-Class Data with Confidences

no code implementations16 Jun 2021 Yuzhou Cao, Lei Feng, Senlin Shu, Yitian Xu, Bo An, Gang Niu, Masashi Sugiyama

We show that without any assumptions on the loss functions, models, and optimizers, we can successfully learn a multi-class classifier from only data of a single class with a rigorous consistency guarantee when confidences (i. e., the class-posterior probabilities for all the classes) are available.

Classification Multi-class Classification

Learning from Similarity-Confidence Data

no code implementations13 Feb 2021 Yuzhou Cao, Lei Feng, Yitian Xu, Bo An, Gang Niu, Masashi Sugiyama

Weakly supervised learning has drawn considerable attention recently to reduce the expensive time and labor consumption of labeling massive data.

Weakly-supervised Learning

Multi-Complementary and Unlabeled Learning for Arbitrary Losses and Models

no code implementations13 Jan 2020 Yuzhou Cao, Shuqi Liu, Yitian Xu

We first give an unbiased estimator of the classification risk from samples with multiple complementary labels, and then further improve the estimator by incorporating unlabeled samples into the risk formulation.

General Classification Image Classification +1

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