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This study explores a novel approach to neural network pruning using evolutionary computation, focusing on simultaneously pruning the encoder and decoder of an autoencoder. We introduce two new mutation operators that use layer activations…

Neural and Evolutionary Computing · Computer Science 2025-05-09 Steven Jorgensen , Erik Hemberg , Jamal Toutouh , Una-May O'Reilly

We propose split-brain autoencoders, a straightforward modification of the traditional autoencoder architecture, for unsupervised representation learning. The method adds a split to the network, resulting in two disjoint sub-networks. Each…

Computer Vision and Pattern Recognition · Computer Science 2017-04-21 Richard Zhang , Phillip Isola , Alexei A. Efros

Dense retrieval requires high-quality text sequence embeddings to support effective search in the representation space. Autoencoder-based language models are appealing in dense retrieval as they train the encoder to output high-quality…

Machine Learning · Computer Science 2021-09-17 Shuqi Lu , Di He , Chenyan Xiong , Guolin Ke , Waleed Malik , Zhicheng Dou , Paul Bennett , Tieyan Liu , Arnold Overwijk

Given a mixed hyperspectral data set, linear unmixing aims at estimating the reference spectral signatures composing the data - referred to as endmembers - their abundance fractions and their number. In practice, the identified endmembers…

Methodology · Statistics 2016-01-20 Pierre-Antoine Thouvenin , Nicolas Dobigeon , Jean-Yves Tourneret

Good weight initialisation is an important step in successful training of Artificial Neural Networks. Over time a number of improvements have been proposed to this process. In this paper we introduce a novel weight initialisation technique…

Machine Learning · Computer Science 2023-11-20 Marcel Marais , Mate Hartstein , George Cevora

In autonomous embedded systems, it is often vital to reduce the amount of actions taken in the real world and energy required to learn a policy. Training reinforcement learning agents from high dimensional image representations can be very…

Machine Learning · Computer Science 2019-03-26 Bharat Prakash , Mark Horton , Nicholas R. Waytowich , William David Hairston , Tim Oates , Tinoosh Mohsenin

The hyperspectral image (HSI) unmixing task is essentially an inverse problem, which is commonly solved by optimization algorithms under a predefined (non-)linear mixture model. Although these optimization algorithms show impressive…

Image and Video Processing · Electrical Eng. & Systems 2020-06-02 Chao Zhou

End-to-end learning of communication systems enables joint optimization of transmitter and receiver, implemented as deep neural network-based autoencoders, over any type of channel and for an arbitrary performance metric. Recently, an…

Information Theory · Computer Science 2019-06-25 Mathieu Goutay , Fayçal Ait Aoudia , Jakob Hoydis

The weights of neural networks (NNs) have recently gained prominence as a new data modality in machine learning, with applications ranging from accuracy and hyperparameter prediction to representation learning or weight generation. One…

Machine Learning · Computer Science 2025-03-24 Léo Meynent , Ivan Melev , Konstantin Schürholt , Göran Kauermann , Damian Borth

In this paper, we study the problem of improving computational resource utilization of neural networks. Deep neural networks are usually over-parameterized for their tasks in order to achieve good performances, thus are likely to have…

Computer Vision and Pattern Recognition · Computer Science 2018-12-04 Siyuan Qiao , Zhe Lin , Jianming Zhang , Alan Yuille

Hyperspectral unmixing (HU) is crucial for analyzing hyperspectral imagery, yet achieving accurate unmixing remains challenging. While traditional methods struggle to effectively model complex spectral-spatial features, deep learning…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Chentong Wang , Jincheng Gao , Fei Zhu , Jie Chen

Hyperspectral Imaging (HSI) for fluorescence-guided brain tumor resection enables visualization of differences between tissues that are not distinguishable to humans. This augmentation can maximize brain tumor resection, improving patient…

Image and Video Processing · Electrical Eng. & Systems 2024-02-07 David Black , Jaidev Gill , Andrew Xie , Benoit Liquet , Antonio Di leva , Walter Stummer , Eric Suero Molina

Autoencoders can be challenged by spatially non-uniform sampling of image content. This is common in medical imaging, biology, and physics, where informative patterns occur rarely at specific image coordinates, as background dominates these…

Computer Vision and Pattern Recognition · Computer Science 2026-04-03 Alejandro Castañeda Garcia , Jan van Gemert , Daan Brinks , Nergis Tömen

A rapidly growing area of research is the use of machine learning approaches such as autoencoders for dimensionality reduction of data and models in scientific applications. We show that the canonical formulation of autoencoders suffers…

Machine Learning · Computer Science 2022-07-28 Andrey A. Popov , Arash Sarshar , Austin Chennault , Adrian Sandu

Over the past decades, enormous efforts have been made to improve the performance of linear or nonlinear mixing models for hyperspectral unmixing, yet their ability to simultaneously generalize various spectral variabilities and extract…

Image and Video Processing · Electrical Eng. & Systems 2021-05-24 Danfeng Hong , Lianru Gao , Jing Yao , Naoto Yokoya , Jocelyn Chanussot , Uta Heiden , Bing Zhang

Considerable work has been dedicated to hyperspectral single image super-resolution to improve the spatial resolution of hyperspectral images and fully exploit their potential. However, most of these methods are supervised and require some…

Image and Video Processing · Electrical Eng. & Systems 2026-04-10 Xinxin Xu , Yann Gousseau , Christophe Kervazo , Saïd Ladjal

Deep Learning has been widely applied in the area of image processing and natural language processing. In this paper, we propose an end-to-end communication structure based on autoencoder where the transceiver can be optimized jointly. A…

Information Theory · Computer Science 2019-06-18 Tianjie Mu , Xiaohui Chen , Li Chen , Huarui Yin , Weidong Wang

Regularized training of an autoencoder typically results in hidden unit biases that take on large negative values. We show that negative biases are a natural result of using a hidden layer whose responsibility is to both represent the input…

Machine Learning · Statistics 2015-04-09 Kishore Konda , Roland Memisevic , David Krueger

In this paper we introduce the deep kernelized autoencoder, a neural network model that allows an explicit approximation of (i) the mapping from an input space to an arbitrary, user-specified kernel space and (ii) the back-projection from…

Machine Learning · Statistics 2017-02-09 Michael Kampffmeyer , Sigurd Løkse , Filippo Maria Bianchi , Robert Jenssen , Lorenzo Livi

Existing black box modeling approaches in machine learning suffer from a fixed input and output feature combination. In this paper, a new approach to reconstruct missing variables in a set of time series is presented. An autoencoder is…

Machine Learning · Computer Science 2023-08-22 Jan-Philipp Roche , Oliver Niggemann , Jens Friebe