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11-Aug-2018 New paper describes octave plots for visualizing alpha diversity.

12-Jun-2018 New paper shows that one in five taxonomy annotations in SILVA and Greengenes are wrong.

18-Apr-2018 New paper shows that taxonomy prediction accuracy is <50% for V4 sequences.

05-Oct-2017 PeerJ paper shows low accuracy of closed- and open-ref. QIIME OTUs.

22-Sep-2017 New paper shows 97% threshold is wrong, OTUs should be 99% full-length 16S, 100% for V4.

UPARSE tutorial video posted on YouTube. Make OTUs from MiSeq reads.



FAQ: What is a process?

One 64-bit usearch license terms allows you to run one usearch "process".

A "process" is a technical term used in Linux and other operating systems. Informally, it is a running copy of a binary program. The top and ps ("process status") commands in Linux and OSX show one line for each process.

Multi-threading is supported within a process. In other words, a single process can run multiple threads (if supported by the command).

A 64-bit license allows you to run one process. If top or ps shows usearch N times, then you are running N usearch processes and you need N licenses. It doesn't matter if these processes are all running on one computer or on different computers, the same principle applies.

It is OK for people in a group to share the license if they make sure that only one process is running at any given time.

It is not OK for one person to start many processes, e.g. on a compute cluster, unless they have multiple licenses.