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SIMBA algorithm
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Instructions for generating the prostate cancer TF-miRNA network shown in Fig. 2a. The following R libraries required by SIMBA should be installed first: mclust, extremevalues and matrixStats. Step 1: Download SIMBA from Github: https://github.com/SIMBA2/SIMBA Step 2: Install SIMBA: On Mac: Rscript -e "install.packages('SIMBA_1.0_macosx.tgz', repos = NULL)" On Windows: Rscript -e "install.packages('SIMBA.zip', repos = NULL)" On Linux: Rscript -e "install.packages('SIMBA_1.0_R_x86_64-pc-linux-gnu.tar.gz', repos = NULL)" Step 3: Open R and run the following code: # The entire process will run for approximately 20 minutes on a Core i7 desktop with Ubuntu 12.04. # Once done, the network can be visualized with Cytoscape. The network should be the same as the one shown in Fig. 2a in the manuscript. library(SIMBA) data('mRNA_exp',package='SIMBA') data('miRNA_exp',package='SIMBA') data('miRNA_CNV',package='SIMBA') data('TFlist',package='SIMBA') #calculate outliers for mRNA and miRNA mRNA_outliers<-calc_bimodal_outliers(mRNA_exp) miRNA_outliers<-calc_bimodal_outliers(miRNA_exp) #filter miRNA outliers by CNV data miRNA_outliers2<-filter_outliers_by_CNV(miRNA_CNV,miRNA_outliers) #build an initial network for TF and miRNAs init.net<-build_initial_network(mRNA_exp,miRNA_exp,mRNA_outliers,miRNA_outliers2,TFlist) #build a network for TF and miRNAs with MDL FDRcutoff<-0.05 net<-build_network(mRNA_exp,miRNA_exp,mRNA_outliers,miRNA_outliers2,TFlist,init.net,FDRcutoff) #filter the network by binomial test finalnet<-filter_network(net) # finalnet then can be visualized using Cytoscape, it is the network shown in Fig. 2a in the manuscript.
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