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We examine the star formation histories (SFHs) of galaxies in smoothed particle hydrodynamics (SPH) simulations, compare them to parametric models that are commonly used in fitting observed galaxy spectral energy distributions, and examine…

Astrophysics of Galaxies · Physics 2014-04-03 Vimal Simha , David H. Weinberg , Charlie Conroy , Romeel Dave , Mark Fardal , Neal Katz , Benjamin D. Oppenheimer

We investigate the optimal approach for recovering the star formation histories (SFHs) and spatial distribution of stellar mass in high-redshift galaxies ($z\sim 2-5$), focusing on the impact of assumed SFH models on derived galaxy…

Astrophysics of Galaxies · Physics 2025-03-20 Moein Mosleh , Mohammad Riahi-Zamin , Sandro Tacchella

Identification of specific stellar populations using photometry for spectroscopic follow-up is a first step to confirm and better understand their nature. In this context, we present an unsupervised machine learning approach to identify…

Deep learning (DL) applied to a device's radio-frequency fingerprint~(RFF) has attracted significant attention in physical-layer authentication due to its extraordinary classification performance. Conventional DL-RFF techniques are trained…

Signal Processing · Electrical Eng. & Systems 2022-10-18 Renjie Xie , Wei Xu , Jiabao Yu , Aiqun Hu , Derrick Wing Kwan Ng , A. Lee Swindlehurst

Learning the structure of Markov random fields (MRFs) plays an important role in multivariate analysis. The importance has been increasing with the recent rise of statistical relational models since the MRF serves as a building block of…

Machine Learning · Statistics 2018-07-04 Yuya Takashina , Shuyo Nakatani , Masato Inoue

Linearized shallow neural networks that are constructed by fixing the hidden-layer parameters have recently shown strong performance in solving partial differential equations (PDEs). Such models, widely used in the random feature method…

Numerical Analysis · Mathematics 2026-01-21 Tong Mao , Jinchao Xu , Xiaofeng Xu

A fundamental challenge in developing high-impact machine learning technologies is balancing the need to model rich, structured domains with the ability to scale to big data. Many important problem areas are both richly structured and large…

Machine Learning · Computer Science 2017-11-20 Stephen H. Bach , Matthias Broecheler , Bert Huang , Lise Getoor

Superpixel-based Higher-order Conditional Random Fields (CRFs) are effective in enforcing long-range consistency in pixel-wise labeling problems, such as semantic segmentation. However, their major short coming is considerably longer time…

Computer Vision and Pattern Recognition · Computer Science 2018-05-31 Li Sulimowicz , Ishfaq Ahmad , Alexander Aved

We propose a novel framework for the systematic design of lensless imaging systems based on the hyperuniform random field solutions of nonlinear reaction-diffusion equations from pattern formation theory. Specifically, we introduce a new…

Optics · Physics 2021-11-03 Yuyao Chen , Wesley A. Britton , Luca Dal Negro

We propose a new class of random feature methods for linearizing softmax and Gaussian kernels called hybrid random features (HRFs) that automatically adapt the quality of kernel estimation to provide most accurate approximation in the…

Secret sharing allows distributing a secret among several parties such that only authorized subsets, specified by an access structure, can reconstruct the secret. Sehrawat and Desmedt (COCOON 2020) introduced hidden access structures, that…

Cryptography and Security · Computer Science 2021-09-14 Vipin Singh Sehrawat , Foo Yee Yeo , Yvo Desmedt

This paper extends the Kikuchi method to give algorithms for decisional $k$-sparse Learning With Errors (LWE) and $k$-sparse Learning Parity with Noise (LPN) problems for higher moduli $q$. We create a Kikuchi graph for a sparse LWE/LPN…

Cryptography and Security · Computer Science 2026-03-31 Shashwat Agrawal , Amitabha Bagchi , Rajendra Kumar

Profiled Sparse Networks (PSN) replace uniform connectivity with deterministic, heterogeneous fan-in profiles defined by continuous, nonlinear functions, creating neurons with both dense and sparse receptive fields. We benchmark PSN across…

Machine Learning · Computer Science 2026-04-14 Nikodem Tomczak

Federated learning is an efficient framework designed to facilitate collaborative model training across multiple distributed devices while preserving user data privacy. A significant challenge of federated learning is data-level…

Machine Learning · Computer Science 2024-08-26 Shunxin Guo , Hongsong Wang , Shuxia Lin , Zhiqiang Kou , Xin Geng

Deep-learning (DL) has emerged as a powerful machine-learning technique for several classic problems encountered in generic wireless communications. Specifically, random Fourier Features (RFF) based deep-learning has emerged as an…

Information Theory · Computer Science 2021-01-14 Rangeet Mitra , Georges Kaddoum

The lottery ticket hypothesis suggests that dense networks contain sparse subnetworks that can be trained in isolation to match full-model performance. Existing approaches-iterative pruning, dynamic sparse training, and pruning at…

Machine Learning · Computer Science 2025-10-01 Qihang Yao , Constantine Dovrolis

We present LS-CRF, a new method for very efficient large-scale training of Conditional Random Fields (CRFs). It is inspired by existing closed-form expressions for the maximum likelihood parameters of a generative graphical model with tree…

Machine Learning · Computer Science 2014-03-28 Alexander Kolesnikov , Matthieu Guillaumin , Vittorio Ferrari , Christoph H. Lampert

Data-dependent hashing has recently attracted attention due to being able to support efficient retrieval and storage of high-dimensional data such as documents, images, and videos. In this paper, we propose a novel learning-based hashing…

Machine Learning · Computer Science 2019-04-09 Jie Gui , Tongliang Liu , Zhenan Sun , Dacheng Tao , Tieniu Tan

This paper focuses on the problem of Differentially Private Stochastic Optimization for (multi-layer) fully connected neural networks with a single output node. In the first part, we examine cases with no hidden nodes, specifically focusing…

Machine Learning · Computer Science 2023-10-13 Hanpu Shen , Cheng-Long Wang , Zihang Xiang , Yiming Ying , Di Wang

We present a general framework for derandomizing random linear codes with respect to a broad class of properties, known as local properties, which encompass several standard notions such as distance, list-decoding, list-recovery, and…

Information Theory · Computer Science 2025-11-21 Fernando Granha Jeronimo , Nikhil Shagrithaya