Search Results for author: Hao Helen Zhang

Found 7 papers, 2 papers with code

Spatial Heterogeneity Automatic Detection and Estimation

no code implementations5 Jun 2019 Xin Wang, Zhengyuan Zhu, Hao Helen Zhang

Spatial regression is widely used for modeling the relationship between a dependent variable and explanatory covariates.

Methodology

Nonparametric Trace Regression in High Dimensions via Sign Series Representation

no code implementations4 May 2021 Chanwoo Lee, Lexin Li, Hao Helen Zhang, Miaoyan Wang

Trace regression is a widely used method to model effects of matrix predictors and has shown great success in matrix learning.

Matrix Completion Multi-Task Learning +2

Heterogeneous Domain Adaptation with Adversarial Neural Representation Learning: Experiments on E-Commerce and Cybersecurity

1 code implementation5 May 2022 MohammadReza Ebrahimi, Yidong Chai, Hao Helen Zhang, Hsinchun Chen

This incentivizes developing domain adaptation methods that leverage the knowledge in known domains (source) and adapt to new domains (target) with a different probability distribution.

Domain Adaptation Representation Learning

Linear Algorithms for Robust and Scalable Nonparametric Multiclass Probability Estimation

1 code implementation25 May 2022 Liyun Zeng, Hao Helen Zhang

In particular, the baseline learning has optimal computational complexity in the sense that it is linear in $K$.

Computational Efficiency Ensemble Learning

Boosting Nyström Method

no code implementations21 Feb 2023 Keaton Hamm, Zhaoying Lu, Wenbo Ouyang, Hao Helen Zhang

To improve the standard Nystr\"{o}m approximation, ensemble Nystr\"{o}m algorithms compute a mixture of Nystr\"{o}m approximations which are generated independently based on column resampling.

Robust Brain MRI Image Classification with SIBOW-SVM

no code implementations15 Nov 2023 Liyun Zeng, Hao Helen Zhang

Nonetheless, deep learning-based image classification methods, including CNN, face challenges in estimating class probabilities without proper model calibration.

Classification Image Classification

Sparse Learning and Class Probability Estimation with Weighted Support Vector Machines

no code implementations17 Dec 2023 Liyun Zeng, Hao Helen Zhang

The binary class probability is then estimated either by the $\ell^2$-norm regularized wSVMs framework with selected variables or by elastic net regularized wSVMs directly.

Ensemble Learning Sparse Learning +1

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