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The Hodrick-Prescott (HP) filter is one of the most widely used econometric methods in applied macroeconomic research. Like all nonparametric methods, the HP filter depends critically on a tuning parameter that controls the degree of…

计量经济学 · 经济学 2020-11-26 Peter C. B. Phillips , Zhentao Shi

We treat an image restoration problem with a Poisson noise chan- nel using a Bayesian framework. The Poisson randomness might be appeared in observation of low contrast object in the field of imaging. The noise observation is often hard to…

计算机视觉与模式识别 · 计算机科学 2014-12-09 Hayaru Shouno

This article addresses the image denoising problem in the situations of strong noise. We propose a dual sparse decomposition method. This method makes a sub-dictionary decomposition on the over-complete dictionary in the sparse…

计算机视觉与模式识别 · 计算机科学 2017-04-25 Hong Sun , Chen-guang Liu , Cheng-wei Sang

The degradation of the acquired signal by Poisson noise is a common problem for various imaging applications, such as medical imaging, night vision and microscopy. Up to now, many state-of-the-art Poisson denoising techniques mainly…

计算机视觉与模式识别 · 计算机科学 2015-10-13 Wensen Feng , Yunjin Chen

Homogeneous polynomial dynamical systems (HPDSs), which can be equivalently represented by tensors, are essential for modeling higher-order networked systems, including ecological networks, chemical reactions, and multi-agent robotic…

系统与控制 · 电气工程与系统科学 2026-04-07 Xin Mao , Joshua Pickard , Can Chen

Area openings and closings are morphological filters which efficiently suppress impulse noise from an image, by removing small connected components of level sets. The problem of an objective choice of threshold for the area remains open.…

概率论 · 数学 2016-08-16 David Coupier , Agnès Desolneux , Bernard Ycart

Scientific hypotheses in a variety of applications have domain-specific structures, such as the tree structure of the International Classification of Diseases (ICD), the directed acyclic graph structure of the Gene Ontology (GO), or the…

统计方法学 · 统计学 2020-04-14 Eugene Katsevich , Chiara Sabatti , Marina Bogomolov

Harmonic/percussive source separation (HPSS) consists in separating the pitched instruments from the percussive parts in a music mixture. In this paper, we propose to apply the recently introduced Masker-Denoiser with twin networks (MaD…

We extend the blindspot model for self-supervised denoising to handle Poisson-Gaussian noise and introduce an improved training scheme that avoids hyperparameters and adapts the denoiser to the test data. Self-supervised models for…

图像与视频处理 · 电气工程与系统科学 2020-11-20 Wesley Khademi , Sonia Rao , Clare Minnerath , Guy Hagen , Jonathan Ventura

Speech enhancement tasks have seen significant improvements with the advance of deep learning technology, but with the cost of increased computational complexity. In this study, we propose an adaptive boosting approach to learning locality…

音频与语音处理 · 电气工程与系统科学 2020-02-25 Sunwoo Kim , Haici Yang , Minje Kim

Noise reduction techniques based on deep learning have demonstrated impressive performance in enhancing the overall quality of recorded speech. While these approaches are highly performant, their application in audio engineering can be…

声音 · 计算机科学 2023-10-18 Christian J. Steinmetz , Thomas Walther , Joshua D. Reiss

This paper presents a finite difference quasi-Newton method for the minimization of noisy functions. The method takes advantage of the scalability and power of BFGS updating, and employs an adaptive procedure for choosing the differencing…

最优化与控制 · 数学 2019-01-09 Albert S. Berahas , Richard H. Byrd , Jorge Nocedal

The task of hyper-parameter optimization (HPO) is burdened with heavy computational costs due to the intractability of optimizing both a model's weights and its hyper-parameters simultaneously. In this work, we introduce a new class of HPO…

机器学习 · 计算机科学 2021-12-14 Mathieu Tuli , Mahdi S. Hosseini , Konstantinos N. Plataniotis

We present a density matrix approach for treating systems with a large or infinite number of degrees of freedom per site with exact diagonalization or the density matrix renormalization group. The method is demonstrated on the 1D Holstein…

超导电性 · 物理学 2009-10-30 Chunli Zhang , Eric Jeckelmann , Steven R. White

Complex inference tasks, such as those encountered in Pulsar Timing Array (PTA) data analysis, rely on Bayesian frameworks. The high-dimensional parameter space and the strong interdependencies among astrophysical, pulsar noise, and…

天体物理仪器与方法 · 物理学 2025-11-06 Luigi D'amico , Eleonora Villa , Fatima Modica Bittordo , Aldo Barca , Francesco Alì , Massimo Meneghetti , Luca Naso

Tensor train (TT) decomposition, a powerful tool for analyzing multidimensional data, exhibits superior performance in many machine learning tasks. However, existing methods for TT decomposition either suffer from noise overfitting, or…

信号处理 · 电气工程与系统科学 2023-06-27 Le Xu , Lei Cheng , Ngai Wong , Yik-Chung Wu

We present a hybrid framework that leverages the trade-off between temporal and frequency precision in audio representations to improve the performance of speech enhancement task. We first show that conventional approaches using specific…

音频与语音处理 · 电气工程与系统科学 2018-12-24 Jang-Hyun Kim , Jaejun Yoo , Sanghyuk Chun , Adrian Kim , Jung-Woo Ha

Dependability modeling and evaluation is aimed at investigating that a system performs its function correctly in time. A usual way to achieve a high reliability, is to design redundant systems that contain several replicas of the same…

人工智能 · 计算机科学 2012-12-12 Andrea Bobbio , Stefania Montani , Luigi Portinale

This work explores non-negative low-rank matrix factorization based on regularized Poisson models (PF or "Poisson factorization" for short) for recommender systems with implicit-feedback data. The properties of Poisson likelihood allow a…

机器学习 · 计算机科学 2022-02-25 David Cortes

Predicting the statistical properties of the neutral hydrogen (HI) density field during reionization is an important step in using upcoming 21 cm observations to constrain models of reionization. Semi-numerical models of reionization are…

宇宙学与河外天体物理 · 物理学 2026-04-22 Gaurav Pundir , Tirthankar Roy Choudhury , Aseem Paranjape