compute_perturbation_score
                        Compute Single Sample Perturbation Score
generate_permuted_scores
                        Permute sample labels to simulate null
                        distribution of perturbation scores
logCPM_example          logCPM_example: Normalised logCPM of
                        patient-derived explant models obtained from 5
                        ER-positive primamry breast cancer patients
                        (GSE80098)
metadata_example        metadata_example: Sample metadata for malignant
                        breast cancer tumors PDE from 5 ER+ breast
                        cancer patients (GSE80098)
normalise_by_permu      Normalise test perturbation scores by
                        permutation
plot_gs_network         Plot gene-set network
retrieve_topology       Retrieve pathway topology as weighted adjacent
                        matrix
sSNAPPY                 sSNAPPY: A package for testing directional
                        single sample pathway perturbation
weight_ss_fc            Compute weighted single sample LogFCs from
                        normalised logCPM
