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Employing large antenna arrays is a key characteristic of millimeter wave (mmWave) and terahertz communication systems. Due to the hardware constraints and the lack of channel knowledge, codebook based beamforming/combining is normally…

信号处理 · 电气工程与系统科学 2022-09-13 Yu Zhang , Tawfik Osman , Ahmed Alkhateeb

Joint communication and sensing (JCS) is envisioned as an enabler of future 6G networks. One of the key features of these networks will be the use of extremely large aperture arrays (ELAAs) and high operating frequencies, which will result…

信号处理 · 电气工程与系统科学 2024-05-09 Caterina Giovannetti , Nicolò Decarli , Davide Dardari

While existing work on neural architecture search (NAS) tunes hyperparameters in a separate post-processing step, we demonstrate that architectural choices and other hyperparameter settings interact in a way that can render this separation…

机器学习 · 计算机科学 2018-07-19 Arber Zela , Aaron Klein , Stefan Falkner , Frank Hutter

In this paper, we aim to learn a mapping (or embedding) from images to a compact binary space in which Hamming distances correspond to a ranking measure for the image retrieval task. We make use of a triplet loss because this has been shown…

计算机视觉与模式识别 · 计算机科学 2016-08-02 Bohan Zhuang , Guosheng Lin , Chunhua Shen , Ian Reid

A high peak current, flat longitudinal phase space electron beam is desirable for efficient x-ray free electron laser (FEL) radiation in next generation light sources. To attain such a beam requires the extensive design of the linear…

加速器物理 · 物理学 2019-10-23 Ji Qiang

Millimeter-wave (mmWave) and terahertz (THz) communications require beamforming to acquire adequate receive signal-to-noise ratio (SNR). To find the optimal beam, current beam management solutions perform beam training over a large number…

信号处理 · 电气工程与系统科学 2021-11-30 Shuaifeng Jiang , Ahmed Alkhateeb

With the rise of large language models (LLMs), recent works have leveraged LLMs to improve the performance of click-through rate (CTR) prediction. However, we argue that a critical obstacle remains in deploying LLMs for practical use: the…

信息检索 · 计算机科学 2024-03-29 Binzong Geng , Zhaoxin Huan , Xiaolu Zhang , Yong He , Liang Zhang , Fajie Yuan , Jun Zhou , Linjian Mo

Extremely large-scale multiple-input multiple-output (XL-MIMO) is the development trend of future wireless communications. However, the extremely large-scale antenna array could bring inevitable nearfield and dual-wideband effects that…

信息论 · 计算机科学 2024-09-13 Jie Xu , Li You , George C. Alexandropoulos , Xinping Yi , Wenjin Wang , Xiqi Gao

Hybrid beamforming via large antenna arrays has shown a great potential for increasing data rate in cellular networks by delivering multiple data streams simultaneously. In this paper, several beamforming design algorithms are proposed…

信息论 · 计算机科学 2018-02-06 Shahram Shahsavari , S. Amir Hosseini , Chris Ng , Elza Erkip

Hyperparameters play a critical role in the performances of many machine learning methods. Determining their best settings or Hyperparameter Optimization (HPO) faces difficulties presented by the large number of hyperparameters as well as…

机器学习 · 统计学 2020-07-21 Yang Yang , Ke Deng , Michael Zhu

Scale of data and scale of computation infrastructures together enable the current deep learning renaissance. However, training large-scale deep architectures demands both algorithmic improvement and careful system configuration. In this…

分布式、并行与集群计算 · 计算机科学 2017-09-21 Shang-Xuan Zou , Chun-Yen Chen , Jui-Lin Wu , Chun-Nan Chou , Chia-Chin Tsao , Kuan-Chieh Tung , Ting-Wei Lin , Cheng-Lung Sung , Edward Y. Chang

The performance of a deep neural network is heavily dependent on its architecture and various neural architecture search strategies have been developed for automated network architecture design. Recently, evolutionary neural architecture…

神经与进化计算 · 计算机科学 2020-03-27 Haoyu Zhang , Yaochu Jin , Ran Cheng , Kuangrong Hao

Adapting Large Language Models (LLMs) to new tasks through fine-tuning has been made more efficient by the introduction of Parameter-Efficient Fine-Tuning (PEFT) techniques, such as LoRA. However, these methods often underperform compared…

计算与语言 · 计算机科学 2024-05-24 Chunlin Tian , Zhan Shi , Zhijiang Guo , Li Li , Chengzhong Xu

Emulator embedded neural networks, which are a type of physics informed neural network, leverage multi-fidelity data sources for efficient design exploration of aerospace engineering systems. Multiple realizations of the neural network…

机器学习 · 计算机科学 2023-09-14 Atticus Beachy , Harok Bae , Jose Camberos , Ramana Grandhi

Machine learning has emerged as a powerful solution to the modern challenges in accelerator physics. However, the limited availability of beam time, the computational cost of simulations, and the high-dimensionality of optimisation problems…

加速器物理 · 物理学 2024-05-30 Jan Kaiser , Chenran Xu , Annika Eichler , Andrea Santamaria Garcia

Antenna arrays are widely used in wireless communication, radar systems, radio astronomy, and military defense to enhance signal strength, directivity, and interference suppression. We introduce a deep learning-based optimization approach…

机器学习 · 计算机科学 2025-04-25 David Lu , Lior Maman , Jackson Earls , Amir Boag , Pierre Baldi

The exponential moving average (EMA) is a commonly used statistic for providing stable estimates of stochastic quantities in deep learning optimization. Recently, EMA has seen considerable use in generative models, where it is computed with…

机器学习 · 计算机科学 2023-10-24 Jonathan Patsenker , Henry Li , Yuval Kluger

Beamforming-capable antenna arrays with many elements enable higher data rates in next generation 5G and 6G networks. In current practice, analog beamforming uses a codebook of pre-configured beams with each of them radiating towards a…

机器学习 · 计算机科学 2025-12-08 Alexander Mattick , George Yammine , Georgios Kontes , Setareh Maghsudi , Christopher Mutschler

The Extreme Learning Machine (ELM) technique is a machine learning approach for constructing feed-forward neural networks with a single hidden layer and their models. The ELM model can be constructed while being trained by concurrently…

最优化与控制 · 数学 2024-01-30 Muideen Adegoke , Lateef O. Jolaoso , Mardiyyah Oduwole

We present a powerful new loss function and training scheme for learning binary hash codes with any differentiable model and similarity function. Our loss function improves over prior methods by using log likelihood loss on top of an…

机器学习 · 计算机科学 2018-10-03 Martin Loncaric , Bowei Liu , Ryan Weber
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