---
title: Overfitting
kind: concept
id: overfitting
domain: ai
parent: machine-learning
url: https://gurkanozkan.ai/concepts/overfitting/
markdown: https://gurkanozkan.ai/concepts/overfitting.md
---

# Overfitting

A model learning the noise in its training data as well, and therefore generalising worse to new data.

- Domain: [AI](https://gurkanozkan.ai/topics/ai/)
- Broader concept: [Machine learning](https://gurkanozkan.ai/concepts/machine-learning/)

## Relations

- measured by: [Model evaluation](https://gurkanozkan.ai/concepts/model-evaluation/)
- related to: [Data leakage](https://gurkanozkan.ai/concepts/data-leakage/)

## Essays

- [Compiling company documents into an ontology for agents: the model added 0.017](https://gurkanozkan.ai/writing/compiling-a-company-into-an-ontology-for-agents/) (2026-11-14)