Once the different tasks implemented by each article were identified, the pipeline used (i.e. the specific sequence of tasks in a particular order), was also recorded based on the order in which the different tasks were mentioned in the text, figures, supplementary material and/or cited papers. Where multiple mutually exclusive tasks were employed for the purposes of comparison of pipelines, we recorded that pipeline that the authors concluded to be empirically superior, or from which the authors used the output data for subsequent analysis.