Title
Nonlinear modeling of protein expressions in protein arrays
Abstract
This paper addresses the problem of estimating the expressions or concentrations of proteins from measurements obtained from protein arrays and illustrates the methodology on lysate microarray data. With several families of parametric models we design a number of algorithms for the estimation of a highly nonlinear calibration curve as well as the concentrations themselves. The model families include polynomial and sigmoidal nonlinearities for the calibration curve and homoscedastic or heteroscedastic models for the noise. The accuracy of the estimation methods is tested on simulated data and applied to real lysate array data. The results are generally very good, provided that strongly nonlinear models are used.
Year
DOI
Venue
2006
10.1109/TSP.2006.873719
IEEE Transactions on Signal Processing
Keywords
Field
DocType
arrays,maximum likelihood estimation,polynomials,proteins,Monte Carlo simulations,heteroscedastic models,homoscedastic models,lysate microarray data,maximum-likelihood estimation,polynomial,protein arrays,protein expressions,sigmoidal nonlinearities,Heteroscedastic noise,maximum-likelihood estimation,microarray data,model order selection,nonlinear estimation,proteins
Mathematical optimization,Nonlinear system,Parametric model,Polynomial,Expression (mathematics),Identifiability,Homoscedasticity,Calibration curve,Mathematics,Sigmoid function
Journal
Volume
Issue
ISSN
54
6
1053-587X
Citations 
PageRank 
References 
5
1.28
5
Authors
4
Name
Order
Citations
PageRank
I. Tabus18710.32
Hategan, A.251.28
Mircean, C.351.28
Jorma Rissanen41665798.14