---
title: "validation data"
url: "https://ailawframework.com/glossary/validation-data"
type: "defined_term"
site: "AI Law Framework"
checked: "2026-10-10"
---

# validation data

> data used for providing an evaluation of the trained AI system and for tuning its non-learnable parameters and its learning process in order, inter alia, to prevent underfitting or overfitting;

Canonical page: https://ailawframework.com/glossary/validation-data  
Checked: 2026-10-10

Site index for agents: https://ailawframework.com/llms.txt

data used for providing an evaluation of the trained AI system and for tuning its non-learnable parameters and its learning process in order, inter alia, to prevent underfitting or overfitting;

Source: [EU AI Act Art 3(30)](https://artificialintelligenceact.eu/article/3/) (checked 2026-10-10)

## Related terms

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