Looking for classifier (Silva, V3-V4) generated with scikit-learn version 0.21.2

[Nicholas_Bokulich]

Hi @Daniela_Vargas,

@Daniela_Vargas

I found a poster that would kindly provided this classifier (Looking for Pre-trained Silva Classifier (V3-V4) by jwchen). However it was generated with scikit-learn version 0.20.2, so it is not compatible with the most updated version 0.21.2.

One potential solution is to install the QIIME 2 version that was used to generate that classifier — looks like 2019.4 uses scikit-learn=0.20.2. You can install separate environments using conda, so that you can switch to QIIME 2-2019.4 for taxonomy classification, then switch back to the latest release for downstream analyses.