Code to the multi-omics benchmark study by Herrmann et al.

This repo allows to
- download the (preprocessed) data used in the study
- reproduce the results (table, figures etc.) presented in the paper
- rerun the entire benchmark experiment

If you use the code or data please cite:

Moritz Herrmann, Philipp Probst, Roman Hornung, Vindi Jurinovic, Anne-Laure Boulesteix, Large-scale benchmark study of survival prediction methods using multi-omics data, Briefings in Bioinformatics, Volume 22, Issue 3, May 2021, bbaa167, https://doi.org/10.1093/bib/bbaa167

To download the data:

• The preprocessed data (described in the study) is available via OpenML
• The OpenML dataset IDs can be found in data/datset_ids.txt or data/datset_ids.RData
• Note that the datasets had to be split into two to three parts in order to be uploaded to OpenML
• R users can use the code in R/bench_experiment.R (lines 44-81) to directly download the data (and convert it to mlr tasks)

To reprocude the results (in R):

• to only reproduce the tables, figures etc. displayed in the paper without rerunning the benchmark experiments use reproduce_table-and-figures.Rmd
• to rerun the full experiments (this takes several days or weeks, depending on the available resources) use R/bench_experiment.R
• see the instructions in R/packages.R!
• make sure the required packages are installed
• make sure to use correct package versions via checkpoint
• not all packages are covered by checkpoint, this is specifically relevant for mlr (s. R/packages.R)!
• to merge the benchmark results use R/merge_bmr_results.R

Note, mlr has deprecated (https://github.com/mlr-org/mlr) in the meantime. There is now the new framework mlr3 (https://mlr3.mlr-org.com/).