---
title: TREXResultMetadataModel (latest version)
description: API reference for ibm_quantum_schemas.noise_learner_v3.version_0_2.TREXResultMetadataModel in the latest version of qiskit-ibm-runtime
source: https://quantum.cloud.ibm.com/docs/en/api/qiskit-ibm-runtime/ibm-quantum-schemas-noise-learner-v3-version-0-2-trex-result-metadata-model
---

# TREXResultMetadataModel

*pydantic model* `TREXResultMetadataModel`

[GitHub](https://github.com/Qiskit/ibm-quantum-schemas/tree/0.10.20260723/ibm_quantum_schemas/noise_learner_v3/version_0_2/models.py#L97-L104)

Bases: `BaseModel`

The metadata of a single TREX result of a noise learner v3 job.

### learning\_protocol

*field*

Type: `Literal`\[`'trex'`]

Default value: `'trex'`

The learning protocol used to obtain this result.

### post\_selection

*field*

Type: [`TREXResultPostSelectionMetadataModel`](/docs/api/qiskit-ibm-runtime/ibm-quantum-schemas-noise-learner-v3-version-0-2-trex-result-post-selection-metadata-model "ibm_quantum_schemas.noise_learner_v3.version_0_2.TREXResultPostSelectionMetadataModel")

The metadata relative to post selection.