| kmers | Create kmers from a given sequence |
| kmers_matrix | generate sequence k-mer count data matrix |
| tfidf_vectorizer | make the sequence embedding via the TF-IDF weight of the bag-of-k-mers model |
| onehot_vectorizer | make the sequence embedding via the one-hot encoding(Bag-of-n-grams) of the k-mer composition |
| cdhit_nr | run the CD-HIT like sequence clustering for get the non-redundant sequence set |
| cdhit_clusters | run the CD-HIT like sequence clustering and then export the cluster result as a set of the cluster tables |