| ulrb-package | ulrb: Unsupervised Learning Based Definition of Microbial Rare Biosphere | 
| check_avgSil | Check average Silhouette score index | 
| check_CH | Check Calinski-Harabasz index | 
| check_DB | Check Davies-Bouldin Index | 
| define_rb | Define Rare Biosphere | 
| evaluate_k | Evaluate k from all samples in a dataset | 
| evaluate_sample_k | Evaluate sample k | 
| nice | V4-V5 16S rRNA gene amplicons, clean OTU table (N-ICE, 2015) | 
| nice_env | Metadata of samples from OTU tables (N-ICE, 2015) | 
| nice_raw | V4-V5 16S rRNA gene amplicons, raw OTU table (N-ICE, 2015) | 
| nice_tidy | V4-V5 16S rRNA gene amplicons, clean OTU table in tidy/long format (N-ICE, 2015) | 
| plot_ulrb | Plot ulrb clustering results and silhouette scores | 
| plot_ulrb_clustering | Plot Rank Abundance Curve of classification results | 
| plot_ulrb_silhouette | Plot silhouette scores from clustering results | 
| prepare_tidy_data | Prepare data in tidy format | 
| suggest_k | Suggest k |