Search Results for author: Minghe Zhang

Found 9 papers, 0 papers with code

AdaSelection: Accelerating Deep Learning Training through Data Subsampling

no code implementations19 Jun 2023 Minghe Zhang, Chaosheng Dong, Jinmiao Fu, Tianchen Zhou, Jia Liang, Jia Liu, Bo Liu, Michinari Momma, Bryan Wang, Yan Gao, Yi Sun

In this paper, we introduce AdaSelection, an adaptive sub-sampling method to identify the most informative sub-samples within each minibatch to speed up the training of large-scale deep learning models without sacrificing model performance.

Learning Prototype-oriented Set Representations for Meta-Learning

no code implementations ICLR 2022 Dandan Guo, Long Tian, Minghe Zhang, Mingyuan Zhou, Hongyuan Zha

Since our plug-and-play framework can be applied to many meta-learning problems, we further instantiate it to the cases of few-shot classification and implicit meta generative modeling.

Meta-Learning

Solar Radiation Ramping Events Modeling Using Spatio-temporal Point Processes

no code implementations27 Jan 2021 Minghe Zhang, Chen Xu, Andy Sun, Feng Qiu, Yao Xie

Modeling and predicting solar events, particularly the solar ramping event, is critical for improving situational awareness for solar power generation systems.

Point Processes Position

Goodness-of-Fit Test for Mismatched Self-Exciting Processes

no code implementations16 Jun 2020 Song Wei, Shixiang Zhu, Minghe Zhang, Yao Xie

Recently there have been many research efforts in developing generative models for self-exciting point processes, partly due to their broad applicability for real-world applications.

Point Processes

Distributionally Robust Weighted $k$-Nearest Neighbors

no code implementations7 Jun 2020 Shixiang Zhu, Liyan Xie, Minghe Zhang, Rui Gao, Yao Xie

When the samples are limited, robustness is especially crucial to ensure the generalization capability of the classifier.

Few-Shot Learning General Classification +1

Deep Fourier Kernel for Self-Attentive Point Processes

no code implementations17 Feb 2020 Shixiang Zhu, Minghe Zhang, Ruyi Ding, Yao Xie

We present a novel attention-based model for discrete event data to capture complex non-linear temporal dependence structures.

Deep Attention Point Processes

Sequential Adversarial Anomaly Detection for One-Class Event Data

no code implementations21 Oct 2019 Shixiang Zhu, Henry Shaowu Yuchi, Minghe Zhang, Yao Xie

We consider the sequential anomaly detection problem in the one-class setting when only the anomalous sequences are available and propose an adversarial sequential detector by solving a minimax problem to find an optimal detector against the worst-case sequences from a generator.

Anomaly Detection Point Processes

Spectral CUSUM for Online Network Structure Change Detection

no code implementations20 Oct 2019 Minghe Zhang, Liyan Xie, Yao Xie

Detecting abrupt changes in the community structure of a network from noisy observations is a fundamental problem in statistics and machine learning.

Change Detection Event Detection +1

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