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Rafael A. Irizarry
Researcher at Harvard University
Publications - 276
Citations - 94296
Rafael A. Irizarry is an academic researcher from Harvard University. The author has contributed to research in topics: DNA methylation & Bioconductor. The author has an hindex of 89, co-authored 261 publications receiving 83123 citations. Previous affiliations of Rafael A. Irizarry include Dana Corporation & University of California, Berkeley.
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Journal ArticleDOI
Bioconductor: open software development for computational biology and bioinformatics
Robert Gentleman,Vincent J. Carey,Douglas M. Bates,Benjamin M. Bolstad,Marcel Dettling,Sandrine Dudoit,Byron Ellis,Laurent Gautier,Yongchao Ge,Jeff Gentry,Kurt Hornik,Torsten Hothorn,Wolfgang Huber,Stefano Maria Iacus,Rafael A. Irizarry,Friedrich Leisch,Cheng Li,Martin Maechler,A. J. Rossini,Günther Sawitzki,Colin A. Smith,Gordon K. Smyth,Luke Tierney,Jean Yang,Jianhua Zhang +24 more
TL;DR: Details of the aims and methods of Bioconductor, the collaborative creation of extensible software for computational biology and bioinformatics, and current challenges are described.
Journal ArticleDOI
Exploration, normalization, and summaries of high density oligonucleotide array probe level data
Rafael A. Irizarry,Bridget G. Hobbs,Francois Collin,Yasmin Beazer-Barclay,Kristen J. Antonellis,Uwe Scherf,Terence P. Speed +6 more
TL;DR: There is no obvious downside to using RMA and attaching a standard error (SE) to this quantity using a linear model which removes probe-specific affinities, and the exploratory data analyses of the probe level data motivate a new summary measure that is a robust multi-array average (RMA) of background-adjusted, normalized, and log-transformed PM values.
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A comparison of normalization methods for high density oligonucleotide array data based on variance and bias
TL;DR: Three methods of performing normalization at the probe intensity level are presented: a one number scaling based algorithm and a method that uses a non-linear normalizing relation by comparing the variability and bias of an expression measure and the simplest and quickest complete data method is found to perform favorably.
Journal ArticleDOI
Salmon provides fast and bias-aware quantification of transcript expression
TL;DR: Salmon is the first transcriptome-wide quantifier to correct for fragment GC-content bias, which substantially improves the accuracy of abundance estimates and the sensitivity of subsequent differential expression analysis.
Journal ArticleDOI
Summaries of Affymetrix GeneChip probe level data
Rafael A. Irizarry,Benjamin M. Bolstad,Francois Collin,Leslie Cope,Bridget G. Hobbs,Terence P. Speed,Terence P. Speed +6 more
TL;DR: It is found that the performance of the current version of the default expression measure provided by Affymetrix Microarray Suite can be significantly improved by the use of probe level summaries derived from empirically motivated statistical models.