# Recommendation engine

Concept · [Technical basics](https://ecosystem.samcarlton.com/technical)

Also called: recommender system, recommendations, recommendation system, recommender

Software that suggests items a person is likely to want, based on what they and similar people have done before.

**For example:** A video site's recommendation engine shows the next video based on what you just watched.

## Connects to (4)

- [Knowledge graph](https://ecosystem.samcarlton.com/knowledge-graph): A way of storing information as things and the named connections between them, such as 'course A teaches skill B'.
- [Embedding](https://ecosystem.samcarlton.com/embedding): A way of turning a piece of text into a list of numbers that captures its meaning, so software can tell which pieces of text are about…
- [Similarity search](https://ecosystem.samcarlton.com/similarity-search): Finding the stored items whose vectors are closest to a query's vector, so results match by meaning rather than exact words.
- [AI](https://ecosystem.samcarlton.com/terms/ai): Artificial intelligence.

Map view: https://ecosystem.samcarlton.com/recommendation-engine