The Annals of Applied Statistics
- Ann. Appl. Stat.
- Volume 7, Number 4 (2013), 2431-2457.
Multi-way blockmodels for analyzing coordinated high-dimensional responses
Edoardo M. Airoldi, Xiaopei Wang, and Xiaodong Lin
Abstract
We consider the problem of quantifying temporal coordination between multiple high-dimensional responses. We introduce a family of multi-way stochastic blockmodels suited for this problem, which avoids preprocessing steps such as binning and thresholding commonly adopted for this type of data, in biology. We develop two inference procedures based on collapsed Gibbs sampling and variational methods. We provide a thorough evaluation of the proposed methods on simulated data, in terms of membership and blockmodel estimation, predictions out-of-sample and run-time. We also quantify the effects of censoring procedures such as binning and thresholding on the estimation tasks. We use these models to carry out an empirical analysis of the functional mechanisms driving the coordination between gene expression and metabolite concentrations during carbon and nitrogen starvation, in S. cerevisiae.
Article information
Source
Ann. Appl. Stat. Volume 7, Number 4 (2013), 2431-2457.
Dates
First available in Project Euclid: 23 December 2013
Permanent link to this document
http://projecteuclid.org/euclid.aoas/1387823326
Digital Object Identifier
doi:10.1214/13-AOAS643
Mathematical Reviews number (MathSciNet)
MR3161729
Zentralblatt MATH identifier
1283.62215
Keywords
High dimensional data variational inference molecular biology yeast
Citation
Airoldi, Edoardo M.; Wang, Xiaopei; Lin, Xiaodong. Multi-way blockmodels for analyzing coordinated high-dimensional responses. Ann. Appl. Stat. 7 (2013), no. 4, 2431--2457. doi:10.1214/13-AOAS643. http://projecteuclid.org/euclid.aoas/1387823326.
Supplemental materials
- Supplementary material: Supplement to “Multi-way blockmodels for analyzing coordinated high-dimensional responses”. We provide additional supporting plots that show both good and poor performance of the Hill estimator for the index of regular variation in a variety of examples.Digital Object Identifier: doi:10.1214/13-AOAS643SUPP

