Results 11 to 20 of about 136,861 (303)

Unsupervised Learning of Shape Manifolds [PDF]

open access: yesProcedings of the British Machine Vision Conference 2007, 2007
Classical shape analysis methods use principal component analysis to reduce the dimensionality of shape spaces. The basic assumption behind these methods is that the subspace corresponding to the major modes of variation for a particular class of shapes is linearised. This may not necessarily be the case in practice.
Nasir M. Rajpoot   +2 more
openaire   +3 more sources

Anomaly Detection in Blockchain Networks Using Unsupervised Learning: A Survey

open access: yesAlgorithms
In decentralized systems, the quest for heightened security and integrity within blockchain networks becomes an issue. This survey investigates anomaly detection techniques in blockchain ecosystems through the lens of unsupervised learning, delving into ...
Christos Cholevas   +4 more
doaj   +2 more sources

Unsupervised learning and generalization [PDF]

open access: yesProceedings of International Conference on Neural Networks (ICNN'96), 2002
The concept of generalization is defined for a general class of unsupervised learning machines. The generalization error is a straightforward extension of the corresponding concept for supervised learning, and may be estimated empirically using a test set or by statistical means-in close analogy with supervised learning.
Lars Kai Hansen, Jan Larsen
openaire   +2 more sources

Hardware Demonstration of SRDP Neuromorphic Computing with Online Unsupervised Learning Based on Memristor Synapses

open access: yesMicromachines, 2022
Neuromorphic computing has shown great advantages towards cognitive tasks with high speed and remarkable energy efficiency. Memristor is considered as one of the most promising candidates for the electronic synapse of the neuromorphic computing system ...
Ruiyi Li   +7 more
doaj   +1 more source

Unsupervised Tokenization Learning

open access: yesProceedings of the 2022 Conference on Empirical Methods in Natural Language Processing, 2022
In the presented study, we discover that the so-called "transition freedom" metric appears superior for unsupervised tokenization purposes in comparison to statistical metrics such as mutual information and conditional probability, providing F-measure scores in range from 0.71 to 1.0 across explored multilingual corpora.
Anton Kolonin, Vignav Ramesh
openaire   +2 more sources

Unsupervised learning on particle image velocimetry with embedded cross‐correlation and divergence‐free constraint

open access: yesIET Cyber-systems and Robotics, 2022
Particle image velocimetry (PIV) is an essential method in experimental fluid dynamics. In recent years, the development of deep learning‐based methods has inspired new approaches to tackle the PIV problem, which considerably improves the accuracy of PIV.
Yiwei Chong   +4 more
doaj   +1 more source

Unsupervised Learning of Particles Dispersion

open access: yesMathematics, 2023
This paper discusses using unsupervised learning in classifying particle-like dispersion. The problem is relevant to various applications, including virus transmission and atmospheric pollution.
Nicholas Christakis, Dimitris Drikakis
doaj   +1 more source

Stable and Fast Deep Mutual Information Maximization Based on Wasserstein Distance

open access: yesEntropy, 2023
Deep learning is one of the most exciting and promising techniques in the field of artificial intelligence (AI), which drives AI applications to be more intelligent and comprehensive.
Xing He   +4 more
doaj   +1 more source

Deep boundary‑aware clustering by jointly optimizing unsupervised representation learning [PDF]

open access: yes, 2022
Deep clustering obtains feature representation generally and then performs clustering for high dimension real-world data. However, conventional solutions are two-stage embedding learning-based methods and these two processes are separate and independent,
Li, Lin   +4 more
core   +1 more source

Unsupervised Learning of Monocular Depth Estimation:A Survey [PDF]

open access: yesJisuanji kexue
As the key point of 3D reconstruction,automatic driving and visual SLAM,depth estimation has always been a hot research direction in the field of computer vision,among which,monocular depth estimation technology based on unsupervised learning has been ...
CAI Jiacheng, DONG Fangmin, SUN Shuifa, TANG Yongheng
doaj   +1 more source

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