Title :
Revision of the variational Bayesian method for uncovering genes regulatory network
Author :
Sanchez-Castillo, M. ; Tienda-Luna, I.M. ; Blanco-Navarro, D. ; Carrion-Perez, M.C.
Author_Institution :
Dept. of Appl. Phys., Univ. of Granada, Granada, Spain
Abstract :
We have revised the Markov model used in the analysis of microarray time-series data to uncover the gene regulatory network. Previous linear models establishes genetic relations between the microarray data which are assumed to have noise. We propose a new model to distinguish between observed data and real expression levels. The new model does not overestimate the noise and fits better the nature of the problem. We have also studied how the variational Bayesian algorithm can be modified to solve this problem. Finally, we have performed a prior analysis to include objective knowledge into the Bayesian methodology.
Keywords :
Bayes methods; Markov processes; biology computing; data analysis; genetics; time series; Markov model; genes regulatory network; genetic relations; linear models; microarray time-series data analysis; objective knowledge; observed data level; real expression level; variational Bayesian method; Analytical models; Bayesian methods; Bioinformatics; Data models; Databases; Noise; Noise measurement;
Conference_Titel :
Genomic Signal Processing and Statistics (GENSIPS), 2011 IEEE International Workshop on
Conference_Location :
San Antonio, TX
Print_ISBN :
978-1-4673-0491-7
Electronic_ISBN :
2150-3001
DOI :
10.1109/GENSiPS.2011.6169481