The Statistical Package for REliability Data Analysis (SPREDA) implements recentlydeveloped statistical methods for the analysis of reliability data. Modern technological developments, such as sensors and smart chips, allow us to dynamically track product/system usage as well as other environmental variables, such as temperature and humidity. We refer to these variables as dynamic covariates. The package contains functions for the analysis of timetoevent data with dynamic covariates and degradation data with dynamic covariates. The package also contains functions that can be used for analyzing timetoevent data with right censoring, and with left truncation and right censoring. Financial support from NSF and DuPont are acknowledged.
Package details 


Author  Yili Hong, Yimeng Xie, and Zhibing Xu 
Date of publication  20140925 17:44:48 
Maintainer  Yili Hong <yilihong@vt.edu> 
License  GPL2 
Version  1.0 
Package repository  View on CRAN 
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