Results 41 to 50 of about 6,372,670 (283)

Unsupervised Relation Extraction for E-Learning Applications [PDF]

open access: yes, 2011
A thesis submitted in partial fulfilment of the requirements of the University of Wolverhampton for the degree of Doctor of PhilosophyIn this modern era many educational institutes and business organisations are adopting the e-Learning approach as it ...
Afzal, Naveed
core   +2 more sources

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

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 spectral learning

open access: yesCoRR, 2012
In spectral clustering and spectral image segmentation, the data is partioned starting from a given matrix of pairwise similarities S. the matrix S is constructed by hand, or learned on a separate training set. In this paper we show how to achieve spectral clustering in unsupervised mode.
Susan M. Shortreed, Marina Meila
openaire   +4 more sources

Unsupervised Learning of Visual Structure [PDF]

open access: yesJournal of Vision, 2002
To learn a visual code in an unsupervised manner, one may attempt to capture those features of the stimulus set that would contribute significantly to a statistically efficient representation (as dictated, e.g., by the Minimum Description Length principle).
Shimon Edelman   +2 more
openaire   +2 more sources

FINANCIAL FRAUD DETECTION AND MACHINE LEARNING ALGORITHM (UNSUPERVISED LEARNING): SYSTEMATIC LITERATURE REVIEW

open access: yesJurnal Riset Akuntansi dan Bisnis Airlangga, 2023
This research aims to assess the usage of unsupervised learning in detecting financial fraud across various financial industries by identifying cognitive constructs, benefits, economic optimization, and challenges associated with fraud detection ...
Nadia Husnaningtyas, Totok Dewayanto
doaj   +1 more source

Classification of Medical Images Based on Unsupervised Algorithms: A Review

open access: yesInternational Journal of Research and Applied Technology
Artificial intelligence models are becoming increasingly essential in biomedical research and healthcare services. Various healthcare organizations utilize information-based machine learning and image-processing methods for the diagnosis of diseases ...
Imad Majed Zeebaree   +1 more
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

A Brief Review of Unsupervised Machine Learning Algorithms in Astronomy: Dimensionality Reduction and Clustering

open access: yesUniverse
This review investigates the application of unsupervised machine learning algorithms to astronomical data. Unsupervised machine learning enables researchers to analyze large, high-dimensional, and unlabeled datasets and is sometimes considered more ...
Chih-Ting Kuo, Duo Xu, Rachel Friesen
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

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