Trained files ready to be used with the RDP Classifier. Sequences and taxonomy is largely based on the UNITE + INSD v8.3 full dataset for eukaryotes. Taxonomic adjustments were made to resolve unknown and non-unique taxa into a strictly hierarchical taxonomy. Sequences were dereplicated, only unique sequences retained, to reduce dataset size. Compressed file size 1.06 Gb, decompressed file size 4.6 Gb.