I successfully completed Humann until getting gene families. Now I want to regroup Uniref_90 to KO terms. So I did like following:
humann_regroup_table -i sample_1.tsv -g uniref90_ko -o sample_KO.tsv"
I regrouped the samples and it sounds i got a low grouping rate:
Original Feature Count: 106978; Grouped 1+ times: 4569 (4.3%); Grouped 2+ times: 19 (0.0%)
is this low number acceptable?