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stochprofML (version 2.0.3)

Stochastic Profiling using Maximum Likelihood Estimation

Description

New Version of the R package originally accompanying the paper "Parameterizing cell-to-cell regulatory heterogeneities via stochastic transcriptional profiles" by Sameer S Bajikar, Christiane Fuchs, Andreas Roller, Fabian J Theis and Kevin A Janes (PNAS 2014, 111(5), E626-635 ). In this paper, we measure expression profiles from small heterogeneous populations of cells, where each cell is assumed to be from a mixture of lognormal distributions. We perform maximum likelihood estimation in order to infer the mixture ratio and the parameters of these lognormal distributions from the cumulated expression measurements. The main difference of this new package version to the previous one is that it is now possible to use different n's, i.e. a dataset where each tissue sample originates from a different number of cells. We used this on pheno-seq data, see: Tirier, S.M., Park, J., Preusser, F. et al. Pheno-seq - linking visual features and gene expression in 3D cell culture systems. Sci Rep 9, 12367 (2019) ).

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Version

Install

install.packages('stochprofML')

Monthly Downloads

20

Version

2.0.3

License

GPL (>= 2)

Maintainer

Lisa Amrhein

Last Published

June 10th, 2020

Functions in stochprofML (2.0.3)

toycluster.EXPLN

Synthetic data from the EXP-LN model
toycluster.LNLN

Synthetic data from the LN-LN model
generate.toydata

Generation and analysis of synthetic data in stochastic profiling model
d.sum.of.mixtures.rLNLN

Sums of mixtures of lognormal random variables
stochprof.search.rLNLN

Calculation of the log likelihood function of the rLN-LN model
penalty.constraint.LNLN

Penalization for population densities that do not fulfil certain constraints for the LN-LN model
stochprofML-package

Stochastic Profiling using Maximum Likelihood Estimation
calculate.ci.LNLN

Maximum likelihood confidence intervals for LN-LN model
analyze.sod2

Analysis of SOD2 data in stochastic profiling model
toycluster.rLNLN

Synthetic data from the rLN-LN model
stochprof.results.LNLN

Evaluation of results from estimation of LN-LN model
calculate.ci.rLNLN

Maximum likelihood confidence intervals for rLN-LN model
stochprof.results.rLNLN

Evaluation of results from estimation of rLN-LN model
comb.summands

Combinations of fixed number of summands with pre-defined sum.
calculate.ci.EXPLN

Maximum likelihood confidence intervals for EXP-LN model
stochasticProfilingML

User prompt for maximum likelihood estimation of stochastic profiling model
penalty.constraint.rLNLN

Penalization for population densities that do not fulfil certain constraints for the rLN-LN model
mix.d.sum.of.mixtures.LNLN

Density of the sum of mixtures of lognormal random variables weighted by all possible summands
stochasticProfilingData

User prompt for generation and visualization of synthetic data in stochastic profiling model
mix.d.sum.of.mixtures.EXPLN

Density of the sum of mixtures of zero, one or more lognormal random variables and one exponential random variable weighted by all possible summands
stochprof.search.EXPLN

Calculation of the log likelihood function of the EXP-LN model
stochprof.search.LNLN

Calculation of the log likelihood function of the LN-LN model
analyze.toycluster

Analysis of toyclusters in stochastic profiling model
stochprof.loop

Maximum likelihood estimation for the parameters in the stochastic profiling model
stochprof.results.EXPLN

Evaluation of results from estimation of EXP-LN model
sod2

Measurements from the detoxifying enzyme, SOD2
set.model.functions

Defines some global model-dependent functions
d.sum.of.mixtures.EXPLN

Sums of mixtures of zero, one or more lognormal random variables and one exponential random variable
d.sum.of.mixtures.LNLN

Sums of mixtures of lognormal random variables
penalty.constraint.EXPLN

Penalization for population densities that do not fulfil certain constraints for the EXP-LN model
mix.d.sum.of.mixtures.rLNLN

Density of the sum of mixtures of lognormal random variables weighted by all possible summands