Negative values after pt.pp.dsb

[ChaseTaylor939]

Describe the bug
Lots of my CITE-seq values are negative after running pt.pp.dsb. It seems like like they shouldn't be below 0. Am I just misunderstanding how pt.pp.dsb works?

To Reproduce

BAL_9282_JC_1 = mu.read_10x_h5('/home/taylor81/BAL_Data/9282-JC-1/ec5337_tdi30000_fpr_0.01_epochs150_filtered.h5')
BAL_9282_JC_1_raw = mu.read_10x_h5('/home/taylor81/BAL_Data/9282-JC-1/raw_feature_bc_matrix.h5')
pt.pp.dsb(BAL_9282_JC_1,BAL_9282_JC_1_raw,random_state = 1)

Expected behaviour
I would expect no negative values, but I get negative values like the following example:

<style> </style>

	Hu.CD101	Hu.CD103	Hu.CD105_43A3	Hu.CD107a	Hu.CD112	Hu.CD119	Hu.CD11a	Hu.CD11b	Hu.CD11c	Hu.CD122	Hu.CD123	Hu.CD124	Hu.CD127	Hu.CD13
CTGATCCCAATGGACG-1	-10.224	10.86788	-3.03904	-42.3412	-8.69139	-7.74294	-42.4369	-13.9509	-34.5928	-3.91137	-21.7118	-9.87767	-7.54718	9.31312

System

• OS: 5.19.0-35-generic
• Python 3.10.9

Package Version Editable project location

---

absl-py 1.4.0
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certifi 2022.12.7
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Additional context
Add any other context about the problem here.

[racng]

Looking at the publication for the dsb tool, Figure 4a shows some negative values for dsb normalized protein data. So it seems like we should expect some negative values. Link to figure: https://www.nature.com/articles/s41467-022-29356-8/figures/4