Results 31 to 40 of about 3,667,449 (266)

From data to function: Functional modeling of poultry genomics data

open access: yesPoultry Science, 2013
One of the challenges of functional genomics is to create a better understanding of the biological system being studied so that the data produced are leveraged to provide gains for agriculture, human health, and the environment. Functional modeling enables researchers to make sense of these data as it reframes a long list of genes or gene products ...
F M, McCarthy, E, Lyons
openaire   +2 more sources

Rank dynamics for functional data

open access: yesComputational Statistics & Data Analysis, 2020
The study of the dynamic behavior of cross-sectional ranks over time for functional data and the ranks of the observed curves at each time point and their temporal evolution can yield valuable insights into the time dynamics of functional data. This approach is of interest in various application areas.
Yaqing Chen 0003   +2 more
openaire   +4 more sources

Nonparametric Regression Based on Discretely Sampled Curves

open access: yesRevstat Statistical Journal, 2020
In the context of nonparametric regression, we study conditions under which the consistency (and rates of convergence) of estimators built from discretely sampled curves can be derived from the consistency of estimators based on the unobserved whole ...
Liliana Forzani   +2 more
doaj   +1 more source

Data types as functions

open access: yesDAIMI Report Series, 1978
This paper introduces a new, simple definition of what a data type is. This definition gives one possible solution of the theoretical problems: when can an actual parameter of type T be substituted for a formal parameter of type T'? When can a type T' be implemented as another type T''?
openaire   +2 more sources

Functional Analysis of Variance: An Application to Stock Exchange

open access: yesCumhuriyet Science Journal
The concept of "functional data" allows for the representation of data collected repeatedly over a period of time as a continuous function within a specific range on the time axis, rather than as discrete measurement points.
Selin Öğütcü, Nuri Çelik
doaj   +1 more source

A Functional Data Approach to Outlier Detection and Imputation for Traffic Density Data on Urban Arterial Roads

open access: yesPromet (Zagreb), 2022
In traffic monitoring data analysis, the magnitude of traffic density plays an important role in determining the level of traffic congestion. This study proposes a data imputation method for spatio-functional principal component analysis (s-FPCA) and ...
Bing Tang, Yao Hu, Huan Chen
doaj   +1 more source

An Overview of Kriging and Cokriging Predictors for Functional Random Fields

open access: yesMathematics, 2023
This article presents an overview of methodologies for spatial prediction of functional data, focusing on both stationary and non-stationary conditions.
Ramón Giraldo   +2 more
doaj   +1 more source

Feature selection for functional data

open access: yesJournal of Multivariate Analysis, 2016
22 pages, 4 ...
Ricardo Fraiman   +2 more
openaire   +4 more sources

Nonparametric expectile shortfall regression for functional data

open access: yesDemonstratio Mathematica
This work addresses the issue of financial risk analysis by introducing a novel expected shortfall (ES) regression model, which employs expectile regression to define the shortfall threshold in financial risk management.
Almanjahie Ibrahim M.   +4 more
doaj   +1 more source

Identification of Granite Varieties from Colour Spectrum Data

open access: yesSensors, 2010
The granite processing sector of the northwest of Spain handles many varieties of granite with specific technical and aesthetic properties that command different prices in the natural stone market. Hence, correct granite identification and classification
José Antonio Vilán   +3 more
doaj   +1 more source

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