search for: npmle

Dear all, I want to compute the NPMLE for interval censored data using the EMICM function in Icens package, but I didn't find much detailed instructions on how to use this. I couldn't even figure out how to specify the status of right censored, interval censored, observed. (probably due to my level of understanding.) Does anyon...

Dear R community, I am using the R package `interval` in order to perform some modelling tests of the NPMLE convergence in the case of censoring. So all I am doing is drawing a sample from exponential distribution, making it a censored sample and computing the NPMLE of its distribution function. But when run on Linux Calculate 10.4 the program keeps crashing and reporting a segmentation fault after the c...

Hi all, I have uploaded an update of the interval package, which calculates nonparametric maximum likelihood estimates (NPMLE) of distributions and exact or asymptotic weighted logrank-type tests for interval censored data. An important part of the update is that now the default initial estimate of the NPMLE uses the MLEcens package and is much faster. This increases the speed of the logrank-type tests as well. Other cha...

Hi all, I have uploaded an update of the interval package, which calculates nonparametric maximum likelihood estimates (NPMLE) of distributions and exact or asymptotic weighted logrank-type tests for interval censored data. An important part of the update is that now the default initial estimate of the NPMLE uses the MLEcens package and is much faster. This increases the speed of the logrank-type tests as well. Other cha...

Hi Are there any functions that de-convolute data into a given number of clusters, rather like the NPMLE GLIM macros from Murray Aitkin and Brian Francis? Basically I would like to code into R the same approach but include the possiblility of some data being censored. In principle the formulae are the same (just replace the likelihood function) but I haven't managed to get my head round the mode...

Un bon mot s'il vous plait. I have coded an R routine to decompose messy data following Murray Aitkin and Brian Francis's NPMLE GLIM macros for the normal distribution only but extended to incorporate censoring and variance heterogeneity. Essentially it is a wrapper for nlm() in the M-part while the E-part re-estimates the weights in the same way as the GLIM macros. The big problem is that it is slow to run - even with ho...

Dear all, Are there functions or packages in R that can handle interval-censored data? I have looked in various packages (such as survival5 or event), but it seems that only right-censored data can be analysed. More generally, are there methods to analyse both interval-censored observations and right-censored observations in the same data set? Thanks in advance. Emmanuel Paradis