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Sparse superposition codes are a recent class of codes introduced by Barron and Joseph for efficient communication over the AWGN channel. With an appropriate power allocation, these codes have been shown to be asymptotically…

Information Theory · Computer Science 2018-03-19 Adam Greig , Ramji Venkataramanan

Low-Rank Adaptation (LoRA) has emerged as a widely adopted approach for adapting large language models, yet the internal representational changes induced by LoRA fine-tuning remain insufficiently understood. In this work, we investigate the…

Machine Learning · Computer Science 2026-05-29 Prasanth K K

Parameter-Efficient Fine-Tuning (PEFT) methods have transformed the approach to fine-tuning large models for downstream tasks by enabling the adjustment of significantly fewer parameters than those in the original model matrices. In this…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Alessio Quercia , Zhuo Cao , Arya Bangun , Richard D. Paul , Abigail Morrison , Ira Assent , Hanno Scharr

Parameter-efficient fine-tuning stands as the standard for efficiently fine-tuning large language and vision models on downstream tasks. Specifically, the efficiency of low-rank adaptation has facilitated the creation and sharing of…

Machine Learning · Computer Science 2024-02-26 Nader Asadi , Mahdi Beitollahi , Yasser Khalil , Yinchuan Li , Guojun Zhang , Xi Chen

An energy-efficient approach is presented for shaping a bit-interleaved low-density parity-check (LDPC) coded amplitude phase-shift keying (APSK) system. A subset of the interleaved bits output by a binary LDPC encoder are passed through a…

Information Theory · Computer Science 2013-04-22 Matthew C. Valenti , Xingyu Xiang

With the rapid scaling of large language models (LLMs), serving numerous low-rank adaptations (LoRAs) concurrently has become increasingly impractical, leading to unaffordable costs and necessitating more parameter-efficient finetuning…

Machine Learning · Computer Science 2024-05-28 Sheng Wang , Boyang Xue , Jiacheng Ye , Jiyue Jiang , Liheng Chen , Lingpeng Kong , Chuan Wu

Low-Rank Adaptation~(LoRA), which updates the dense neural network layers with pluggable low-rank matrices, is one of the best performed parameter efficient fine-tuning paradigms. Furthermore, it has significant advantages in cross-task…

Machine Learning · Computer Science 2024-10-25 Yuren Mao , Yuhang Ge , Yijiang Fan , Wenyi Xu , Yu Mi , Zhonghao Hu , Yunjun Gao

Low-Rank Adaptation (LoRA) fine-tunes large models by learning low-rank updates on top of frozen weights, dramatically reducing trainable parameters and memory. In this work, we address the gap between training with full steps with low-rank…

In Frequency Modulated Continuous Waveform (FMCW) radar systems, the phase noise from the Phase-Locked Loop (PLL) can increase the noise floor in the Range-Doppler map. The adverse effects of phase noise on close targets can be mitigated if…

Signal Processing · Electrical Eng. & Systems 2024-05-17 Jialun Kou , Marc Bauduin , André Bourdoux , Sofie Pollin

Polar codes are a class of error-correcting codes that provably achieve the capacity of practical channels under the low-complexity successive-cancellation flip (SCF) decoding algorithm. However, the SCF decoding algorithm has a variable…

Information Theory · Computer Science 2024-09-06 Ilshat Sagitov , Charles Pillet , Pascal Giard

This work presents TV-LoRA, a novel method for low-dose sparse-view CT reconstruction that combines a diffusion generative prior (NCSN++ with SDE modeling) and multi-regularization constraints, including anisotropic TV and nuclear norm…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Zongyin Deng , Qing Zhou , Yuhao Fang , Zijian Wang , Yao Lu , Ye Zhang , Chun Li

This paper considers coordinated linear precoding in downlink multicell multiuser orthogonal frequency-division multiple access (OFDMA) network. A less-complex, fast and provably convergent algorithm that maximizes the weighted sum-rate…

Information Theory · Computer Science 2017-08-17 Mirza Golam Kibria , Hidekazu Murata , Susumu Yoshida

For the additive white Gaussian noise channel with average codeword power constraint, sparse superposition codes are developed. These codes are based on the statistical high-dimensional regression framework. The paper [IEEE Trans. Inform.…

Information Theory · Computer Science 2012-07-11 Antony Joseph , Andrew Barron

While critical for alignment, Supervised Fine-Tuning (SFT) incurs the risk of catastrophic forgetting, yet the layer-wise emergence of instruction-following capabilities remains elusive. We investigate this mechanism via a comprehensive…

Machine Learning · Computer Science 2026-04-15 Qinghua Zhao , Xueling Gong , Xinyu Chen , Zhongfeng Kang , Xinlu Li

With the breakthrough of Transformer-based pre-trained models, the demand for fine-tuning (FT) to adapt the base pre-trained models to downstream applications continues to grow, so it is essential for service providers to reduce the cost of…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-09-03 Sheng Lin , Fangcheng Fu , Haoyang Li , Hao Ge , Xuanyu Wang , Jiawen Niu , Yaofeng Tu , Bin Cui

Low-Rank Adaptation (LoRA) is a widely adopted parameter-efficient fine-tuning method for large language models. However, its linear nature limits expressiveness. We propose LoRAN, a non-linear extension of LoRA that applies lightweight…

Computation and Language · Computer Science 2025-09-29 Guanzhi Deng , Mingyang Liu , Dapeng Wu , Yinqiao Li , Linqi Song

This article examines two chirp spread spectrum techniques specifically devised for low-power wide-area networks (LPWANs) to optimize energy and spectral efficiency (SE). These methods referred to as layered CSS (LCSS) and layered dual-mode…

Signal Processing · Electrical Eng. & Systems 2024-05-30 Ali Waqar Azim , Ahmad Bazzi , Roberto Bomfin , Raed Shubair , Marwa Chafii

Low-Rank Adapters (LoRAs) have transformed the fine-tuning of Large Language Models (LLMs) by enabling parameter-efficient updates. However, their widespread adoption remains limited by the reliance on GPU-based training. In this work, we…

Machine Learning · Computer Science 2025-07-03 Reza Arabpour , Haitz Sáez de Ocáriz Borde , Anastasis Kratsios

This paper focuses on the signal design in a Gaussian amplify-and-forward (AF) relay system with superposition coding (SC) being applied at the relay, which allows the source and relay to transmit their own information within two time…

Signal Processing · Electrical Eng. & Systems 2019-12-18 Bohai Li , He Chen , Zheng Dong , Yonghui Li , Branka Vucetic

Parameter-efficient fine-tuning methods, represented by LoRA, play an essential role in adapting large-scale pre-trained models to downstream tasks. However, fine-tuning LoRA-series models also faces the risk of overfitting on the training…

Machine Learning · Computer Science 2024-04-16 Yang Lin , Xinyu Ma , Xu Chu , Yujie Jin , Zhibang Yang , Yasha Wang , Hong Mei