Results 81 to 90 of about 166,859,727 (259)

Optimization of Optical Follow-up Strategies Based on Covariance Analysis [PDF]

open access: yes, 2015
An in-depth study, using simulations and covariance analysis, is performed to identify the optimal sequence of observations to obtain the most accurate orbit propagation.
Cordelli, Emiliano   +2 more
core  

Continual Learning for Multimodal Data Fusion of a Soft Gripper

open access: yesAdvanced Robotics Research, EarlyView.
Models trained on a single data modality often struggle to generalize when exposed to a different modality. This work introduces a continual learning algorithm capable of incrementally learning different data modalities by leveraging both class‐incremental and domain‐incremental learning scenarios in an artificial environment where labeled data is ...
Nilay Kushawaha, Egidio Falotico
wiley   +1 more source

Discriminant analysis of Gaussian spatial data with exponential covariance structure

open access: yesLietuvos Matematikos Rinkinys, 2005
This paper considers the discrimination of the observation of the stationary Gaussian random field belonging to one of two populations with different means and covariance functions.
Kęstutis Dučinskas
doaj   +1 more source

Portfolio risk measurement: the estimation of the covariance of stock returns [PDF]

open access: yes
A covariance matrix of asset returns plays an important role in modern portfolio analysis and risk management. Despite the recent interests in improving the estimation of a return covariance matrix, there remain many areas for further investigation. This
Liu, Lan
core  

Consensus Formation and Change are Enhanced by Neutrality

open access: yesAdvanced Science, EarlyView.
Neutral agents are shown to enhance both the formation and overturning of consensus in collective decision‐making. A general mathematical model and experiments with locusts and humans reveal that neutrality enables robust consensus via simple interactions and accelerates consensus change by reducing effective population size.
Andrei Sontag   +3 more
wiley   +1 more source

Analysis of code levelling rods calibration accuracy applying covariance functions

open access: yesGeodesy and Cartography, 2012
An analysis of code levelling rods calibration accuracy applying covariance functions theory is presented. Images of the coded rods are treated by the Matlab 7 computer program.
Jonas Skeivalas   +3 more
doaj   +1 more source

Finite Sample Analysis of Weighted Realized Covariance with Noisy Asynchronous Observations [PDF]

open access: yes
In this paper, we provide a framework to evaluate finite sample MSE of several realized covariance estimators when using nonsynchronous observations contaminated with microstructure noise. This framework enables us to examine different estimators.
Taro Kanatani
core  

In Situ X‐Ray Tomography and Acoustic Emission Monitoring of Damage Evolution in C/C‐SiC Composites Fabricated by Liquid Silicon Infiltration

open access: yesAdvanced Science, EarlyView.
This study investigates how the internal structure of fiber‐reinforced ceramic composites affects their resistance to damage. By combining 3D X‐ray imaging with acoustic emission monitoring during mechanical testing, it reveals how silicon distribution influences crack formation.
Yang Chen   +7 more
wiley   +1 more source

Application of the covariance analysis by the “sliding window” method to assess the relationship of non-stationary time series

open access: yesЭкспериментальная психология
A covariance analysis method is described to solve the problem of estimating the dynamics of the relationship between two non-stationary time series, represented by behavioral and/or physiological data.
V.V. Apanovich, D.L. Gladilin
doaj   +1 more source

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