# Confidence Intervals greater than 1 in custom classifier

**URL:** https://forum.qiime2.org/t/confidence-intervals-greater-than-1-in-custom-classifier/15014
**Category:** User Support
**Created:** [May 19, 2020, 5:47pm UTC](https://forum.qiime2.org/t/confidence-intervals-greater-than-1-in-custom-classifier/15014 "2020-05-19T17:47:10Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![Jasmine](https://forum.qiime2.org/letter_avatar_proxy/v4/letter/j/47e85d/32.png) [@Jasmine](https://forum.qiime2.org/u/Jasmine)
#### Post date: [June 26, 2020, 4:14pm UTC](https://forum.qiime2.org/t/confidence-intervals-greater-than-1-in-custom-classifier/15014/5 "2020-06-26T16:14:39Z")

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Hello,

I am sorry for the late response; I decided to confirm data uploads with my PI first.

Thank you for the suggestion to set `--p-trim-left 0` instead. I tried this and it does seem to help a bit with overall classifications! I also omitted the other 3 'length parameter' settings too.

I still have features with confidence intervals slightly \> 1 though. I'm attaching an example qzv file here.

The attached qzv file was classified with custom v1-v2 **Greengenes** reference, but all the feature classifier steps are the same as those I'd specified for Silva earlier [08b\_01q3\_ggCustomv1-v2Classifications.qzv](https://forum.qiime2.org/uploads/short-url/s3fi6R1tYhMTqCpj71zvwV77mJ8.qzv) (1.3 MB) .

Thanks again,  
Jasmine

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