Results 21 to 30 of about 414,528 (301)

TUMK-ELM: A Fast Unsupervised Heterogeneous Data Learning Approach

open access: yesIEEE Access, 2018
Advanced unsupervised learning techniques are an emerging challenge in the big data era due to the increasing requirements of extracting knowledge from a large amount of unlabeled heterogeneous data.
Lingyun Xiang   +4 more
doaj   +1 more source

DeepDiffusion: Unsupervised Learning of Retrieval-Adapted Representations via Diffusion-Based Ranking on Latent Feature Manifold

open access: yesIEEE Access, 2022
Unsupervised learning of feature representations is a challenging yet important problem for analyzing a large collection of multimedia data that do not have semantic labels.
Takahiko Furuya, Ryutarou Ohbuchi
doaj   +1 more source

A Single-Stage Unsupervised Denoising Low-Illumination Enhancement Network Based on Swin-Transformer

open access: yesIEEE Access, 2023
Traditional low-light enhancement methods are often based on paired datasets for training. The training data is difficult to obtain and the resulting model has poor generalization.
Qian Zhang   +3 more
doaj   +1 more source

Unsupervised Feature-Learning for Hyperspectral Data with Autoencoders

open access: yesRemote Sensing, 2019
This paper proposes novel autoencoders for unsupervised feature-learning from hyperspectral data. Hyperspectral data typically have many dimensions and a significant amount of variability such that many data points are required to represent the ...
Lloyd Windrim   +4 more
doaj   +1 more source

A comment on the training of unsupervised neural networks for learning phases

open access: yesResults in Physics, 2022
The impact on the performance of an unsupervised neural network (NN) for learning the phases of two-dimensional ferromagnetic Potts model, namely a deep learning autoencoder (AE), from using various training sets is investigated.
Yuan-Heng Tseng, Fu-Jiun Jiang
doaj   +1 more source

Self-Supervised and Few-Shot Contrastive Learning Frameworks for Text Clustering

open access: yesIEEE Access, 2023
Contrastive learning is a promising approach to unsupervised learning, as it inherits the advantages of well-studied deep models without a dedicated and complex model design. In this paper, based on bidirectional encoder representations from transformers
Haoxiang Shi, Tetsuya Sakai
doaj   +1 more source

Unsupervised learning algorithm for signal validation in emergency situations at nuclear power plants

open access: yesNuclear Engineering and Technology, 2022
This paper proposes an algorithm for signal validation using unsupervised methods in emergency situations at nuclear power plants (NPPs) when signals are rapidly changing.
Younhee Choi   +2 more
doaj   +1 more source

Occlusion Aware Unsupervised Learning of Optical Flow

open access: yes, 2018
It has been recently shown that a convolutional neural network can learn optical flow estimation with unsupervised learning. However, the performance of the unsupervised methods still has a relatively large gap compared to its supervised counterpart ...
Wang, Peng   +5 more
core   +1 more source

SUN: Stochastic UNsupervised Learning for Data Noise and Uncertainty Reduction

open access: yesApplied Sciences
Unsupervised learning methods significantly benefit various practical applications by effectively identifying intrinsic patterns within unlabelled data.
Nicholas Christakis, Dimitris Drikakis
doaj   +1 more source

Unsupervised Learning of Edges

open access: yes, 2016
Data-driven approaches for edge detection have proven effective and achieve top results on modern benchmarks. However, all current data-driven edge detectors require manual supervision for training in the form of hand-labeled region segments or object ...
Dollár, Piotr   +3 more
core   +1 more source

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