Results 1 to 10 of about 205,425 (288)

Model Independent Expansion History from Supernovae: Cosmology versus Systematics

open access: yes, 2019
We examine the Pantheon supernovae distance data compilation in a model independent analysis to test the validity of cosmic history reconstructions beyond the concordance $\Lambda$CDM cosmology. Strong deviations are allowed by the data at $z\gtrsim1$ in
Kim, Alex G.   +3 more
core   +1 more source

Smoothing parameter selection in two frameworks for penalized splines [PDF]

open access: yes, 2011
There are two popular smoothing parameter selection methods for spline smoothing. First, criteria that approximate the average mean squared error of the estimator (e.g. generalized cross validation) are widely used.
Krivobokova, Tatyana
core  

Computation and Smoothing Parameter Selection In Penalized Likelihood Regression [PDF]

open access: yesCommunications for Statistical Applications and Methods, 2005
This paper consider penalized likelihood regression with data from exponential family. The fast computation method applied to Gaussian data(Kim and Gu, 2004) is extended to non Gaussian data through asymptotically efficient low dimensional approximations and corresponding algorithm is proposed. Also smoothing parameter selection is explored for various
openaire   +1 more source

Robust exponential smoothing of multivariate time series. [PDF]

open access: yes
Multivariate time series may contain outliers of different types. In presence of such outliers, applying standard multivariate time series techniques becomes unreliable. A robust version of multivariate exponential smoothing is proposed.
Croux, Christophe   +2 more
core  

Uncertainty-aware traction force microscopy.

open access: yesPLoS Computational Biology
Traction Force Microscopy (TFM) is a versatile tool to quantify cell-exerted forces by imaging and tracking fiduciary markers embedded in elastic substrates. The computations involved in TFM are often ill-conditioned, and data smoothing or regularization
Adithan Kandasamy   +4 more
doaj   +1 more source

Indonesia’s total fertility rate (TFR) using the brown and holt double exponential smoothing with grid search

open access: yesDesimal
The Brown and Holt DES method effectively captures trends in time-series data. Its forecasting accuracy heavily depends on the selection of optimal smoothing parameters. Often, the smoothing parameters are selected manually using trial and error methods.
Chelsea Fatihah Rahma   +3 more
doaj   +1 more source

Technical Note: Interference errors in infrared remote sounding of the atmosphere [PDF]

open access: yesAtmospheric Chemistry and Physics, 2007
Classical error analysis in remote sounding distinguishes between four classes: "smoothing errors," "model parameter errors," "forward model errors," and "retrieval noise errors".
R. Sussmann, T. Borsdorff
doaj  

Average course approximation of measured subsidence and inclinations of mining area by smooth splines

open access: yesJournal of Sustainable Mining, 2017
The results of marking average courses of subsidence measured on the points of measuring line no. 1 of the “Budryk” Hard Coal Mine, set approximately perpendicularly to a face run of four consecutively mined longwalls in coal bed 338/2 have been ...
Justyna Orwat, Ryszard Mielimąka
doaj   +1 more source

Optimal Estimation for the Functional Cox Model

open access: yes, 2016
Functional covariates are common in many medical, biodemographic, and neuroimaging studies. The aim of this paper is to study functional Cox models with right-censored data in the presence of both functional and scalar covariates. We study the asymptotic
Qu, Simeng, Wang, Jane-Ling, Wang, Xiao
core   +1 more source

Bias in nearest-neighbor hazard estimation [PDF]

open access: yes
In nonparametric curve estimation, the smoothing parameter is critical for performance. In order to estimate the hazard rate, we compare nearest neighbor selectors that minimize the quadratic, the Kullback-Leibler, and the uniform loss.
Dette, Holger, Weißbach, Rafael
core  

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