Search Results for author: Yuqing Zhu

Found 14 papers, 4 papers with code

Sub-Adjacent Transformer: Improving Time Series Anomaly Detection with Reconstruction Error from Sub-Adjacent Neighborhoods

no code implementations27 Apr 2024 Wenzhen Yue, Xianghua Ying, Ruohao Guo, Dongdong Chen, Ji Shi, Bowei Xing, Yuqing Zhu, Taiyan Chen

By focusing the attention on the sub-adjacent areas, we make the reconstruction of anomalies more challenging, thereby enhancing their detectability.

Threshold KNN-Shapley: A Linear-Time and Privacy-Friendly Approach to Data Valuation

no code implementations30 Aug 2023 Jiachen T. Wang, Yuqing Zhu, Yu-Xiang Wang, Ruoxi Jia, Prateek Mittal

Data valuation aims to quantify the usefulness of individual data sources in training machine learning (ML) models, and is a critical aspect of data-centric ML research.

Data Valuation

"Private Prediction Strikes Back!'' Private Kernelized Nearest Neighbors with Individual Renyi Filter

1 code implementation12 Jun 2023 Yuqing Zhu, Xuandong Zhao, Chuan Guo, Yu-Xiang Wang

Most existing approaches of differentially private (DP) machine learning focus on private training.

Generalized PTR: User-Friendly Recipes for Data-Adaptive Algorithms with Differential Privacy

no code implementations31 Dec 2022 Rachel Redberg, Yuqing Zhu, Yu-Xiang Wang

The ''Propose-Test-Release'' (PTR) framework is a classic recipe for designing differentially private (DP) algorithms that are data-adaptive, i. e. those that add less noise when the input dataset is nice.

regression

Adaptive Private-K-Selection with Adaptive K and Application to Multi-label PATE

no code implementations30 Mar 2022 Yuqing Zhu, Yu-Xiang Wang

We provide an end-to-end Renyi DP based-framework for differentially private top-$k$ selection.

Multi-Label Classification

Optimal Accounting of Differential Privacy via Characteristic Function

1 code implementation16 Jun 2021 Yuqing Zhu, Jinshuo Dong, Yu-Xiang Wang

Characterizing the privacy degradation over compositions, i. e., privacy accounting, is a fundamental topic in differential privacy (DP) with many applications to differentially private machine learning and federated learning.

Federated Learning

JITuNE: Just-In-Time Hyperparameter Tuning for Network Embedding Algorithms

no code implementations16 Jan 2021 Mengying Guo, Tao Yi, Yuqing Zhu, Yungang Bao

Although AutoML methods have been applied to the hyperparameter tuning of NE algorithms, the problem of how to tune hyperparameters in a given period of time is not studied for NE algorithms before.

AutoML Link Prediction +2

Improving Sparse Vector Technique with Renyi Differential Privacy

no code implementations NeurIPS 2020 Yuqing Zhu, Yu-Xiang Wang

The Sparse Vector Technique (SVT) is one of the most fundamental algorithmic tools in differential privacy (DP).

Revisiting Model-Agnostic Private Learning: Faster Rates and Active Learning

no code implementations6 Nov 2020 Chong Liu, Yuqing Zhu, Kamalika Chaudhuri, Yu-Xiang Wang

The Private Aggregation of Teacher Ensembles (PATE) framework is one of the most promising recent approaches in differentially private learning.

Active Learning Majority Voting Classifier

Private-kNN: Practical Differential Privacy for Computer Vision

no code implementations CVPR 2020 Yuqing Zhu, Xiang Yu, Manmohan Chandraker, Yu-Xiang Wang

With increasing ethical and legal concerns on privacy for deep models in visual recognition, differential privacy has emerged as a mechanism to disguise membership of sensitive data in training datasets.

Attribute

ClassyTune: A Performance Auto-Tuner for Systems in the Cloud

no code implementations12 Oct 2019 Yuqing Zhu, Jianxun Liu

Performance tuning can improve the system performance and thus enable the reduction of cloud computing resources needed to support an application.

Cloud Computing

BestConfig: Tapping the Performance Potential of Systems via Automatic Configuration Tuning

1 code implementation10 Oct 2017 Yuqing Zhu, Jianxun Liu, Mengying Guo, Yungang Bao, Wenlong Ma, Zhuoyue Liu, Kunpeng Song, Yingchun Yang

To help users tap the performance potential of systems, we present BestConfig, a system for automatically finding a best configuration setting within a resource limit for a deployed system under a given application workload.

Performance Databases Distributed, Parallel, and Cluster Computing Software Engineering

ACTS in Need: Automatic Configuration Tuning with Scalability Guarantees

1 code implementation4 Aug 2017 Yuqing Zhu, Jianxun Liu, Mengying Guo, Wenlong Ma, Yungang Bao

To support the variety of Big Data use cases, many Big Data related systems expose a large number of user-specifiable configuration parameters.

Distributed, Parallel, and Cluster Computing

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