cheese_abundance        Abundance of Fungal Communities in Cheese
pedcan_expression       Gene Expression of Pediatric Cancer
step_aggregate_hclust   Feature aggregation step based on a
                        hierarchical clustering
step_aggregate_list     Feature aggregation step based on a defined
                        list
step_rownormalize_tss   Feature normalization step using total sum
                        scaling
step_select_background
                        Feature selection step using background level
step_select_cv          Feature selection step using the coefficient of
                        variation
step_select_kruskal     Feature selection step using Kruskal test
step_select_wilcoxon    Feature selection step using Wilcoxon test
step_taxonomy           Taxonomic clades feature generator
