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---
title: AccreditationFitter
description: API reference for qiskit.ignis.verification.AccreditationFitter
in_page_toc_min_heading_level: 1
python_api_type: class
python_api_name: qiskit.ignis.verification.AccreditationFitter
---
# AccreditationFitter
<Class id="qiskit.ignis.verification.AccreditationFitter" isDedicatedPage={true} github="https://github.com/qiskit-community/qiskit-ignis/tree/stable/0.6/qiskit/ignis/verification/accreditation/fitters.py" signature="AccreditationFitter" modifiers="class">
Bases: `object`
Class for fitters for accreditation
Implementation follows the methods from Samuele Ferracin, Theodoros Kapourniotis and Animesh Datta New Journal of Physics, Volume 21, November 2019 [https://iopscience.iop.org/article/10.1088/1367-2630/ab4fd6](https://iopscience.iop.org/article/10.1088/1367-2630/ab4fd6)
## Methods
### bound\_variation\_distance
<Function id="qiskit.ignis.verification.AccreditationFitter.bound_variation_distance" signature="AccreditationFitter.bound_variation_distance(theta)">
This function computes the bound on variation distance based and the confidence
**Parameters**
**theta** (*float*) number between 0 and 1
</Function>
### single\_protocol\_run
<Function id="qiskit.ignis.verification.AccreditationFitter.single_protocol_run" signature="AccreditationFitter.single_protocol_run(results, postp_list, v_zero)">
Single protocol run of accreditation protocol on simul backend
**Parameters**
* **results** ([*Result*](qiskit.result.Result "qiskit.result.Result")) results of the quantum job
* **postp\_list** (*list*) list of strings used to post-process outputs
* **v\_zero** (*int*) position of target
</Function>
## Attributes
### N\_acc
<Attribute id="qiskit.ignis.verification.AccreditationFitter.N_acc" attributeValue="0" />
### bound
<Attribute id="qiskit.ignis.verification.AccreditationFitter.bound" attributeValue="1" />
### confidence
<Attribute id="qiskit.ignis.verification.AccreditationFitter.confidence" attributeValue="1" />
### flag
<Attribute id="qiskit.ignis.verification.AccreditationFitter.flag" attributeValue="'accepted'" />
### g\_num
<Attribute id="qiskit.ignis.verification.AccreditationFitter.g_num" attributeValue="1" />
### num\_runs
<Attribute id="qiskit.ignis.verification.AccreditationFitter.num_runs" attributeValue="0" />
### num\_traps
<Attribute id="qiskit.ignis.verification.AccreditationFitter.num_traps" attributeValue="0" />
### outputs
<Attribute id="qiskit.ignis.verification.AccreditationFitter.outputs" attributeValue="[]" />
</Class>