no code implementations • 26 Aug 2023 • Jiajin Luo, Baojian Zhou, Yang Yu, Ping Zhang, Xiaohui Peng, Jianglei Ma, Peiying Zhu, Jianmin Lu, Wen Tong
In order to address the lack of applicable channel models for ISAC research and evaluation, we release Sensiverse, a dataset that can be used for ISAC research.
1 code implementation • 2 Jun 2023 • Baojian Zhou, Steven Skiena
To better understand the value of optimizing for AUC, we present an efficient algorithm, namely AUC-opt, to find the provably optimal AUC linear classifier in $\mathbb{R}^2$, which runs in $\mathcal{O}(n_+ n_- \log (n_+ n_-))$ where $n_+$ and $n_-$ are the number of positive and negative samples respectively.
1 code implementation • 25 May 2023 • Baojian Zhou, Yifan Sun, Reza Babanezhad
This paper studies the online node classification problem under a transductive learning setting.
no code implementations • 29 Sep 2021 • Xingzhi Guo, Baojian Zhou, Haochen Chen, Sergiy Verstyuk, Steven Skiena
The power of embedding representations is a curious phenomenon.
1 code implementation • 29 Jun 2021 • Baojian Zhou, Yifan Sun
In this paper, we consider approximate Frank-Wolfe (FW) algorithms to solve convex optimization problems over graph-structured support sets where the linear minimization oracle (LMO) cannot be efficiently obtained in general.
1 code implementation • 4 Nov 2020 • Zhenhuan Yang, Baojian Zhou, Yunwen Lei, Yiming Ying
In this paper, we aim to develop stochastic hard thresholding algorithms for the important problem of AUC maximization in imbalanced classification.
1 code implementation • 23 Sep 2020 • Baojian Zhou, Yiming Ying, Steven Skiena
The Area Under the ROC Curve (AUC) is a widely used performance measure for imbalanced classification arising from many application domains where high-dimensional sparse data is abundant.
1 code implementation • 26 May 2019 • Baojian Zhou, Feng Chen, Yiming Ying
Online learning algorithms update models via one sample per iteration, thus efficient to process large-scale datasets and useful to detect malicious events for social benefits, such as disease outbreak and traffic congestion on the fly.
1 code implementation • 9 May 2019 • Baojian Zhou, Feng Chen, Yiming Ying
Stochastic optimization algorithms update models with cheap per-iteration costs sequentially, which makes them amenable for large-scale data analysis.
no code implementations • 15 Sep 2017 • Feng Chen, Baojian Zhou, Adil Alim, Liang Zhao
As a case study, we specialize SG-Pursuit to optimize a number of well-known score functions for two typical tasks, including detection of coherent dense and anomalous connected subspace clusters in real-world networks.
no code implementations • 11 Dec 2016 • Feng Chen, Baojian Zhou
Sparsity-constrained optimization is an important and challenging problem that has wide applicability in data mining, machine learning, and statistics.
no code implementations • 30 Sep 2016 • Baojian Zhou, Feng Chen
Structured sparse optimization is an important and challenging problem for analyzing high-dimensional data in a variety of applications such as bioinformatics, medical imaging, social networks, and astronomy.