no code implementations • 15 Jan 2025 • Mengyuan Cao, Haobo Zhang, Yonina C. Eldar, Hongliang Zhang
We consider a hybrid NF and FF localization scenario in this paper, where a base station (BS) locates multiple users in both NF and FF regions with the aid of a reconfigurable intelligent surface (RIS), which is a low-cost implementation of HMIMO.
no code implementations • 25 Dec 2024 • Haobo Zhang, Jianfa Lai, Yicheng Li, Qian Lin, Jun S. Liu
A primary advantage of neural networks lies in their feature learning characteristics, which is challenging to theoretically analyze due to the complexity of their training dynamics.
no code implementations • 2 Sep 2024 • Weihao Lu, Jialin Ding, Haobo Zhang, Qian Lin
Building on recent studies of large-dimensional kernel regression, particularly those involving inner product kernels on the sphere $\mathbb{S}^{d}$, we investigate the Pinsker bound for inner product kernel regression in such settings.
no code implementations • 15 May 2024 • Yicheng Li, Haobo Zhang, Qian Lin
The saturation effect refers to the phenomenon that the kernel ridge regression (KRR) fails to achieve the information theoretical lower bound when the smoothness of the underground truth function exceeds certain level.
no code implementations • 19 Apr 2024 • Haobo Zhang, Weihao Lu, Qian Lin
The generalization ability of kernel interpolation in large dimensions (i. e., $n \asymp d^{\gamma}$ for some $\gamma>0$) might be one of the most interesting problems in the recent renaissance of kernel regression, since it may help us understand the 'benign overfitting phenomenon' reported in the neural networks literature.
no code implementations • 17 Jan 2024 • XiaoYu Zhang, Haobo Zhang, Ruoqi Deng, Liang Liu, Boya Di
Multi-target detection is one of the primary tasks in radar-based localization and sensing, typically built on phased array antennas.
no code implementations • 12 Jan 2024 • Mengyuan Cao, Haobo Zhang, Boya Di, Hongliang Zhang
In this paper, a unified NF and FF localization method is proposed for the RIS-enabled localization system to overcome the above issue.
no code implementations • 7 Jan 2024 • Haobo Zhang, Ziang Yang, Hongliang Zhang, Boya Di, Lingyang Song
As a crucial facilitator of future autonomous driving applications, wireless simultaneous localization and mapping (SLAM) has drawn growing attention recently.
no code implementations • 2 Jan 2024 • Haobo Zhang, Yicheng Li, Weihao Lu, Qian Lin
Motivated by the studies of neural networks (e. g., the neural tangent kernel theory), we perform a study on the large-dimensional behavior of kernel ridge regression (KRR) where the sample size $n \asymp d^{\gamma}$ for some $\gamma > 0$.
1 code implementation • NeurIPS 2023 • Haobo Zhang, Junyuan Hong, Yuyang Deng, Mehrdad Mahdavi, Jiayu Zhou
Deep Gradient Leakage (DGL) is a highly effective attack that recovers private training images from gradient vectors.
no code implementations • 8 Sep 2023 • Weihao Lu, Haobo Zhang, Yicheng Li, Manyun Xu, Qian Lin
We perform a study on kernel regression for large-dimensional data (where the sample size $n$ is polynomially depending on the dimension $d$ of the samples, i. e., $n\asymp d^{\gamma}$ for some $\gamma >0$ ).
1 code implementation • 4 Sep 2023 • Shuyang Yu, Junyuan Hong, Haobo Zhang, Haotao Wang, Zhangyang Wang, Jiayu Zhou
Training a high-performance deep neural network requires large amounts of data and computational resources.
no code implementations • 12 May 2023 • Haobo Zhang, Yicheng Li, Weihao Lu, Qian Lin
In the misspecified kernel ridge regression problem, researchers usually assume the underground true function $f_{\rho}^{*} \in [\mathcal{H}]^{s}$, a less-smooth interpolation space of a reproducing kernel Hilbert space (RKHS) $\mathcal{H}$ for some $s\in (0, 1)$.
no code implementations • 28 Mar 2023 • Yicheng Li, Haobo Zhang, Qian Lin
One of the most interesting problems in the recent renaissance of the studies in kernel regression might be whether the kernel interpolation can generalize well, since it may help us understand the `benign overfitting henomenon' reported in the literature on deep networks.
no code implementations • 27 Mar 2023 • Haobo Zhang, Yicheng Li, Qian Lin
In the misspecified spectral algorithms problem, researchers usually assume the underground true function $f_{\rho}^{*} \in [\mathcal{H}]^{s}$, a less-smooth interpolation space of a reproducing kernel Hilbert space (RKHS) $\mathcal{H}$ for some $s\in (0, 1)$.
1 code implementation • 7 Feb 2023 • Haobo Zhang, Junyuan Hong, Fan Dong, Steve Drew, Liangjie Xue, Jiayu Zhou
Developing a mechanism for battling financial crimes is an impending task that requires in-depth collaboration from multiple institutions, and yet such collaboration imposed significant technical challenges due to the privacy and security requirements of distributed financial data.
no code implementations • 28 Dec 2022 • Ruoqi Deng, Yutong Zhang, Haobo Zhang, Boya Di, Hongliang Zhang, Lingyang Song
Ultra-massive multiple-input multiple-output (MIMO) is one of the key enablers in the forthcoming 6G networks to provide high-speed data services by exploiting spatial diversity.
no code implementations • 16 Nov 2022 • Haobo Zhang, Hongliang Zhang, Boya Di, Lingyang Song
We first introduce the hardware structure and working principle of the RHS and then propose a novel holographic beamforming scheme for ISAC.
no code implementations • 25 Feb 2022 • Haobo Zhang, Hongliang Zhang, Boya Di, Kaigui Bian, Zhu Han, Lingyang Song
To address this issue, we propose to use the reconfigurable intelligent surface (RIS) to improve the detection accuracy of radar systems due to its capability to customize channel conditions by adjusting its phase shifts, which is referred to as MetaRadar.
1 code implementation • 17 Dec 2021 • Feijie Wu, Song Guo, Haozhao Wang, Zhihao Qu, Haobo Zhang, Jie Zhang, Ziming Liu
In the setting of federated optimization, where a global model is aggregated periodically, step asynchronism occurs when participants conduct model training by efficiently utilizing their computational resources.
1 code implementation • 25 Sep 2021 • Jinxin Lv, Zhiwei Wang, Hongkuan Shi, Haobo Zhang, Sheng Wang, Yilang Wang, Qiang Li
Registration of brain MRI images requires to solve a deformation field, which is extremely difficult in aligning intricate brain tissues, e. g., subcortical nuclei, etc.
no code implementations • 4 Jul 2021 • Ziang Yang, Haobo Zhang, Boya Di, Hongliang Zhang, Kaigui Bian, Lingyang Song
In this paper, we propose a novel SLAM system assisted by a reconfigurable intelligent surface (RIS) to address this issue.
no code implementations • 18 Nov 2020 • Haobo Zhang, Hongliang Zhang, Boya Di, Kaigui Bian, Zhu Han, Lingyang Song
As the RIS is able to customize the radio channels by adjusting the phase shifts of the signals reflected at the surface, the localization accuracy in the RIS aided scheme can be improved by choosing the proper phase shifts with significant differences of RSS values among adjacent locations.
no code implementations • 22 Oct 2020 • Yizhou Peng, Jicheng Zhang, Haobo Zhang, HaiHua Xu, Hao Huang, Eng Siong Chng
Experimental results on an 8-accent English speech recognition show both methods can yield WERs close to the conventional ASR systems that completely ignore the accent, as well as desired AR accuracy.
no code implementations • 6 Aug 2020 • Haobo Zhang, Jingzhi Hu, Hongliang Zhang, Boya Di, Kaigui Bian, Zhu Han, Lingyang Song
However, in MetaRadar, it is challenging to build radio maps for all the radio environments generated by metamaterial units and select suitable maps from all the possible maps to realize a high accuracy localization.
no code implementations • 10 Jul 2020 • Haobo Zhang, Hongliang Zhang, Boya Di, Kaigui Bian, Zhu Han, Lingyang Song
The received signal strength (RSS) based technique is widely utilized for ubiquitous positioning due to its advantage of simple implementability.