Frontiers in Biostatistics Seminar
May 11, 2021
Jianhua Hu, PhD
Professor, Biostatistics (in Medicine and in the Herbert Irving Comprehensive Cancer Center)
Director, Cancer Biostatistics Program
Register at: http://bit.ly/FIBMay21
Abstract: Applications of single-cell RNA sequencing in various biomedical research areas have been blooming. This new technology provides unprecedented opportunities to study disease heterogeneity at the cellular level. However, unique characteristics of scRNA-seq data, including large dimensionality, high dropout rates, and possibly batch effects, bring great difficulty into the analysis of such data. Not appropriately addressing these issues obstructs true scientific discovery. Herein, we propose a unified Regularized Zero-inflated Mixture Model framework designed for scRNA-seq data (RZiMM-scRNA) to simultaneously detect cell subgroups and identify gene differential expression based on a developed importance score, accounting for both dropouts and batch effects. We conduct extensive empirical investigation to demonstrate the promise of RZiMM-scRNA in comparison to several popular methods, including K-means and Hierarchical clustering.
This seminar was not recorded as the research presented has not been published yet.