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Ping Ma

Distinguished Research Professor
<a href="">University of Illinois at Urbana-Champaign</a>

With the rapid development of second-generation sequencing technologies, RNA-Seq has become a popular tool for transcriptome analysis. It offers the chance to detect novel transcripts by obtaining tens of millions of short reads. After mapped to the genome and/or to the reference transcripts,   RNA-Seq data can be summarized by a tremendous number of short-read counts. The huge number of short-read counts enables researchers to make transcript quantification in ultra-high resolution. Recent work found that short-read counts have significant sequence bias, which makes simple transcript quantification methods questionable. Thus, more elaborate statistical models that can effectively remove the sequence bias of the short-read counts are highly desirable to make transcript quantification more accurate.  In this talk, I will present some nonparametric statistical analysis for bias correction in RNA-Seq short-read counts.  Since the sample size is over tens of millions, fitting regular nonparametric model is infeasible. I will present a statistical method.  Real RNA-Seq examples will also be presented to demonstrate the empirical performance of our method.

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