# What is Stable Marriage Algorithm?

*Data & Infra · Last updated: October 1, 2026*

A mathematical method that brings together items from two different groups in a way that provides the most optimal matching for each other.

## Overview

There are some matching problems in life where everyone has a favorite candidate, but not everyone can get the best one. Known as the stable marriage problem, this algorithm examines two-sided sets of preferences to find a balanced compromise point where no one will say 'I wish I had chosen the other.'

***Analogy:** It is similar to finding the fairest distribution where no one is unhappy while placing newly starting students into the clubs they want.*

## How it works

It begins with everyone in the groups ranking the candidates belonging to the other group according to their own preferences. Step-by-step rounds of proposing and rejecting are conducted, and matches are updated until the system reaches a stable state.

## Where it is used

It is used in organ donation matchings, university quota placements, and recruitment processes to bring together candidates and positions in the most suitable way.

## Questions and answers

**Does it yield a perfect result for everyone?**

Not perfect, but it yields the most stable and hardest-to-break balanced result according to the preferences of the parties.

**Does it only match humans?**

No, it is also used in computer science to match objects such as servers and data packets.

## Related terms

- [Data Processing](https://trescout.com/en/dictionary/data-processing/)
- [Computer Science](https://trescout.com/en/dictionary/computer-science/)

This explanation was written in plain language for TreScout with AI and **machine-translated** from the Turkish original · the Turkish version prevails. If something looks wrong or missing, write to [hello@trescout.com](mailto:hello@trescout.com). [Read in Turkish →](https://trescout.com/dictionary/stable-marriage-algorithm/)

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Source: TreScout Dictionary · https://trescout.com/en/dictionary/stable-marriage-algorithm/