Results 31 to 40 of about 364,885 (315)

Uniform Manifold Approximation and Projection (UMAP) Reveals Composite Patterns and Resolves Visualization Artifacts in Microbiome Data

open access: yesmSystems, 2021
Microbiome data are sparse and high dimensional, so effective visualization of these data requires dimensionality reduction. To date, the most commonly used method for dimensionality reduction in the microbiome is calculation of between-sample microbial ...
George Armstrong   +6 more
doaj   +1 more source

Neighbors-Based Graph Construction for Dimensionality Reduction

open access: yesIEEE Access, 2019
Dimensionality reduction is a fundamental task in the field of data mining and machine learning. In many scenes, examples in high-dimensional space usually lie on low-dimensional manifolds; thus, learning the low-dimensional embedding is important.
Hui Tian   +3 more
doaj   +1 more source

Equivalence of dimensional reduction and dimensional regularisation [PDF]

open access: yesZeitschrift für Physik C Particles and Fields, 1994
For some years there has been uncertainty over whether regularisation by dimensional reduction (DRED) is viable for non-supersymmetric theories. We resolve this issue by showing that DRED is entirely equivalent to standard dimensional regularisation (DREG), to all orders in perturbation theory and for a general renormalisable theory.
I. Jack, D.R.T. Jones, K. Roberts
openaire   +3 more sources

Accuracy, robustness and scalability of dimensionality reduction methods for single-cell RNA-seq analysis

open access: yesGenome Biology, 2019
Background Dimensionality reduction is an indispensable analytic component for many areas of single-cell RNA sequencing (scRNA-seq) data analysis. Proper dimensionality reduction can allow for effective noise removal and facilitate many downstream ...
Shiquan Sun   +3 more
doaj   +1 more source

Cortical spatio-temporal dimensionality reduction for visual grouping [PDF]

open access: yes, 2014
The visual systems of many mammals, including humans, is able to integrate the geometric information of visual stimuli and to perform cognitive tasks already at the first stages of the cortical processing.
Barbieri, Davide   +3 more
core   +2 more sources

Proximities in dimensionality reduction

open access: yes, 2022
Dimensionality reduction aims at representing high-dimensional data in a lower-dimensional representation, while preserving their structure (clusters, outliers, manifold). Dimensionality reduction can be used for exploratory data visualization, data compression, or as a preprocessing to some other analysis in order to alleviate the curse of ...
Lee, John Aldo   +3 more
openaire   +4 more sources

Factorization and regularization by dimensional reduction [PDF]

open access: yesPhysics Letters B, 2005
Since an old observation by Beenakker et al, the evaluation of QCD processes in dimensional reduction has repeatedly led to terms that seem to violate the QCD factorization theorem. We reconsider the example of the process gg->ttbar and show that the factorization problem can be completely resolved.
Signer, A., Stöckinger, D.
openaire   +4 more sources

Binary Whale Optimization Algorithm for Dimensionality Reduction

open access: yesMathematics, 2020
Feature selection (FS) was regarded as a global combinatorial optimization problem. FS is used to simplify and enhance the quality of high-dimensional datasets by selecting prominent features and removing irrelevant and redundant data to provide good ...
Abdelazim G. Hussien   +4 more
doaj   +1 more source

Improving Dimensionality Reduction Projections for Data Visualization

open access: yesApplied Sciences, 2023
In data science and visualization, dimensionality reduction techniques have been extensively employed for exploring large datasets. These techniques involve the transformation of high-dimensional data into reduced versions, typically in 2D, with the aim ...
Bardia Rafieian   +2 more
doaj   +1 more source

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