Results 41 to 50 of about 1,117,435 (318)

On a parameter adaptive self-organizing system in the presence of large outliers in observations

open access: yesLietuvos Matematikos Rinkinys, 2009
The aim of the given paper is development of a minimum variance control (MVC) approach for a closed-loopdiscrete-time linear time-invariant (LTI) system when the parameters of a dynamic system as well as that of a controller are not known and ought to be
Rimantas Pupeikis
doaj   +1 more source

Constant approximation for k-median and k-means with outliers via iterative rounding [PDF]

open access: yesSymposium on the Theory of Computing, 2017
In this paper, we present a new iterative rounding framework for many clustering problems. Using this, we obtain an (α1 + є ≤ 7.081 + є)-approximation algorithm for k-median with outliers, greatly improving upon the large implicit constant approximation ...
Ravishankar Krishnaswamy   +2 more
semanticscholar   +1 more source

Forecasting Economic Indicators with Robust Factor Models

open access: yesNational Accounting Review, 2022
Outliers can cause significant errors in forecasting, and it is essential to reduce their impact without losing the information they store. Information loss naturally arises if observations are dropped from the dataset.
Fausto Corradin   +2 more
doaj   +1 more source

Outliers in the Single Ring Theorem [PDF]

open access: yes, 2015
This text is about spiked models of non Hermitian random matrices. More specifically, we consider matrices of the type $A+P$, where the rank of $P$ stays bounded as the dimension goes to infinity and where the matrix $A$ is a non Hermitian random matrix,
Benaych-Georges, Florent, Rochet, Jean
core   +3 more sources

Bootstrap Confidence Intervals for 11 Robust Correlations in the Presence of Outliers and Leverage Observations

open access: yesMethodology, 2022
Researchers often examine whether two continuous variables (X and Y) are linearly related. Pearson’s correlation (r) is a widely-employed statistic for assessing bivariate linearity.
Johnson Ching-Hong Li
doaj   +1 more source

Graph Neural Networks for Modeling Causality in International Trade

open access: yesProceedings of the International Florida Artificial Intelligence Research Society Conference, 2021
Neural network algorithms have proven successful for accurate classifications in many domains such as image recognition and semantic parsing. However, they have long suffered from the lack of ability to measure causality, predict outliers effectively, or
Anderson Monken   +4 more
doaj   +1 more source

Assessment of Prenatal Transportation Stress and Sex on Gene Expression Within the Amygdala of Brahman Calves

open access: yesBiology
As the amygdala is associated with fear and anxiety, it is important to determine the potential effects of gestational stressors on behavior and stress responses in offspring.
Emilie C. Baker   +6 more
doaj   +1 more source

Complex outliers of Hermitian random matrices

open access: yes, 2016
In this paper, we study the asymptotic behavior of the outliers of the sum a Hermitian random matrix and a finite rank matrix which is not necessarily Hermitian.
Rochet, Jean
core   +1 more source

Robust Orthogonal Complement Principal Component Analysis [PDF]

open access: yes, 2016
Recently, the robustification of principal component analysis has attracted lots of attention from statisticians, engineers and computer scientists. In this work we study the type of outliers that are not necessarily apparent in the original observation ...
Li, Shijie, She, Yiyuan, Wu, Dapeng
core   +1 more source

A Feature-Cascaded Correntropy LSTM for Tourists Prediction

open access: yesIEEE Access, 2021
Forecasting the number of tourists is significant to public safety, which can enable the government to control the sudden influx of tourists timely. The temporal dependence (closeness and period), external factors such as holidays, government policy, as ...
Yuehai Chen   +4 more
doaj   +1 more source

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