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Robust Bayesian methods for high-dimensional regression problems under diverse sparse regimes are studied. Traditional shrinkage priors are primarily designed to detect a handful of signals from tens of thousands of predictors in the…

统计理论 · 数学 2024-10-25 Se Yoon Lee , Peng Zhao , Debdeep Pati , Bani K. Mallick

Parameter-Efficient Fine-Tuning (PEFT) methods have gained significant popularity for adapting pre-trained Large Language Models (LLMs) to downstream tasks, primarily due to their potential to significantly reduce memory and computational…

计算与语言 · 计算机科学 2024-11-06 Kai Yao , Penglei Gao , Lichun Li , Yuan Zhao , Xiaofeng Wang , Wei Wang , Jianke Zhu

With the prevalence of pre-training-fine-tuning paradigm, how to efficiently adapt the pre-trained model to the downstream tasks has been an intriguing issue. Parameter-Efficient Fine-Tuning (PEFT) methods have been proposed for low-cost…

机器学习 · 计算机科学 2024-06-11 Weixi Song , Zuchao Li , Lefei Zhang , Hai Zhao , Bo Du

In the framework of sparsity-enforcing regularisation for linear inverse problems, we consider the minimisation of a square-root Lasso cost function. To solve this problem we devise a simple modification (called SQRT-ISTA) of the Iterative…

最优化与控制 · 数学 2025-10-29 Patrizia Boccacci , Christine De Mol , Ignace Loris

Synthetic aperture radar (SAR) tomography (TomoSAR) has attracted remarkable interest for its ability in achieving three-dimensional reconstruction along the elevation direction from multiple observations. In recent years, compressed…

信号处理 · 电气工程与系统科学 2022-05-06 Muhan Wang , Zhe Zhang , Yue Wang , Silin Gao , Xiaolan Qiu

In sparse coding, we attempt to extract features of input vectors, assuming that the data is inherently structured as a sparse superposition of basic building blocks. Similarly, neural networks perform a given task by learning features of…

机器学习 · 计算机科学 2022-02-16 Deborah Pereg , Israel Cohen , Anthony A. Vassiliou

The optimization inspired network can bridge convex optimization and neural networks in Compressive Sensing (CS) reconstruction of natural image, like ISTA-Net+, which mapping optimization algorithm: iterative shrinkage-thresholding…

计算机视觉与模式识别 · 计算机科学 2019-08-13 Nanyu Li , Cuiyin Liu

Prompt tuning prepends a soft prompt to the input embeddings or hidden states and only optimizes the prompt to adapt pretrained models (PTMs) to downstream tasks. The previous work manually selects prompt layers which are far from optimal…

计算与语言 · 计算机科学 2023-11-01 Wei Zhu , Ming Tan

A new iterative image reconstruction algorithm for electrical capacitance tomography (ECT) is proposed that is based on iterative soft thresholding of a total variation penalty and adaptive reweighted compressive sensing. This algorithm…

计算机视觉与模式识别 · 计算机科学 2016-11-22 Kezhi Li , Daniel Holland

Stochastic gradient descent is a canonical tool for addressing stochastic optimization problems, and forms the bedrock of modern machine learning and statistics. In this work, we seek to balance the fact that attenuating step-size is…

信号处理 · 电气工程与系统科学 2020-07-10 Zhan Gao , Alec Koppel , Alejandro Ribeiro

Parameter-efficient fine-tuning methods, such as LoRA, reduces the number of trainable parameters. However, they often suffer from scalability issues and differences between their learning pattern and full fine-tuning. To overcome these…

机器学习 · 计算机科学 2025-01-22 Hamid Nasiri , Peter Garraghan

The state transition algorithm (STA), as an intelligent optimization method grounded in constructivist learning, has been demonstrated to be highly effective in solving complex optimization problems. However, the standard STA suffers from…

最优化与控制 · 数学 2026-04-30 Xiaojun Zhou , Chunhua Yang , Weihua Gui , Tingwen Huang

In this paper, a sparsity-aware adaptive algorithm for distributed learning in diffusion networks is developed. The algorithm follows the set-theoretic estimation rationale. At each time instance and at each node of the network, a closed…

信息论 · 计算机科学 2015-06-03 Symeon Chouvardas , Konstantinos Slavakis , Yannis Kopsinis , Sergios Theodoridis

Pre-trained vision-language models provide a robust foundation for efficient transfer learning across various downstream tasks. In the field of video action recognition, mainstream approaches often introduce additional modules to capture…

计算机视觉与模式识别 · 计算机科学 2025-03-19 Haoxing Chen , Zizheng Huang , Yan Hong , Yanshuo Wang , Zhongcai Lyu , Zhuoer Xu , Jun Lan , Zhangxuan Gu

We propose a convolutional recurrent sparse auto-encoder model. The model consists of a sparse encoder, which is a convolutional extension of the learned ISTA (LISTA) method, and a linear convolutional decoder. Our strategy offers a simple…

信号处理 · 电气工程与系统科学 2020-01-22 Hillel Sreter , Raja Giryes

In this paper, inspired from our previous algorithm, which was based on the theory of Tsallis statistical mechanics, we develop a new evolving stochastic learning algorithm for neural networks. The new algorithm combines deterministic and…

神经与进化计算 · 计算机科学 2009-11-11 Aristoklis D. Anastasiadis , George D. Magoulas

This paper introduces a novel framework for physics-aware sparse signal recovery in measurement systems governed by partial differential equations (PDEs). Unlike conventional compressed sensing approaches that treat measurement systems as…

信息论 · 计算机科学 2025-10-09 Tadashi Wadayama , Koji Igarashi , Takumi Takahashi

Parameter-Efficient Fine-Tuning (PEFT) of text-to-image models has become an increasingly popular technique with many applications. Among the various PEFT methods, Low-Rank Adaptation (LoRA) and its variants have gained significant…

机器学习 · 计算机科学 2025-08-01 Zerui Tao , Yuhta Takida , Naoki Murata , Qibin Zhao , Yuki Mitsufuji

Deep convolutional neural networks have recently shown promising results in compressive spectral reconstruction. Previous methods, however, usually adopt a single mapping function for sparse representation. Considering that different…

图像与视频处理 · 电气工程与系统科学 2023-02-07 Shiyun Zhou , Tingfa Xu , Shaocong Dong , Jianan Li

We propose a learnable variational model that learns the features and leverages complementary information from both image and measurement domains for image reconstruction. In particular, we introduce a learned alternating minimization…

计算机视觉与模式识别 · 计算机科学 2025-07-31 Chi Ding , Qingchao Zhang , Ge Wang , Xiaojing Ye , Yunmei Chen