---
title: models.yolo.semantic.val API Reference
description: Reference for YOLO semantic segmentation validator. Learn about the SemanticSegmentationValidator class and its validation metrics.
keywords: Ultralytics, semantic segmentation, validator, validation, mIoU, YOLO, semantic
---

# Reference for `ultralytics/models/yolo/semantic/val.py`

!!! success "Improvements"

    This page is sourced from [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/models/yolo/semantic/val.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/models/yolo/semantic/val.py). Have an improvement or example to add? Open a [Pull Request](https://docs.ultralytics.com/help/contributing) — thank you! 🙏

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## ::: ultralytics.models.yolo.semantic.val.SemanticSegmentationValidator

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