# Catastrophic Forgetting

> Source: https://sukruyusufkaya.com/en/glossary/catastrophic-forgetting
> Updated: 2026-05-13T20:58:43.169Z
> Type: glossary
> Category: uretken-yapay-zeka-ve-llm
**TLDR:** The problem in which a model loses some of its prior general abilities while being adapted to new tasks.

<p>Catastrophic forgetting can arise when the new task becomes overly dominant during fine-tuning. The model may improve in one domain while weakening its general versatility or prior knowledge structure. This requires careful data balancing, regularization, and evaluation strategies.</p>