AI Glossary
The definitive dictionary for AI, Machine Learning, and Governance terminology. From Flash Attention to RAG — look up any term.
U
Underfitting
When a model is too simple to capture the underlying patterns in the data, resulting in poor performance on both training and new data. The model has not learned enough from the training data.
Unstructured Data
Data without a predefined format or organization — text documents, images, videos, audio, social media posts. Over 80% of enterprise data is unstructured.
Unsupervised Learning
A type of machine learning where the model learns patterns from unlabeled data without being told what the correct output should be. The algorithm discovers hidden structures, groupings, or patterns in the data on its own.