The current field of metagenomics can be summarised by three main questions: "Who is in metagenome?" (or "How complex the metagenome is?"), "What are they doing?" and "What is the difference... Show moreThe current field of metagenomics can be summarised by three main questions: "Who is in metagenome?" (or "How complex the metagenome is?"), "What are they doing?" and "What is the difference between two metagenomes?".This research was dedicated to creating new and evaluating already existing methods answering these questions. Show less