# Rules with the T-Swoosh algorithm

Available in...

* Big Data Platform
* Cloud API Services Platform
* Cloud Big Data Platform
* Cloud Data Fabric
* Cloud Data Management Platform
* Data Fabric
* Data Management Platform
* Data Services Platform
* Qlik Talend Cloud Enterprise Edition
* Qlik Talend Cloud Premium Edition
* Real-Time Big Data Platform

You can use the T-Swoosh algorithm to find duplicates and to define how two similar records are merged to create a master record, using a survivorship function. These new merged records are used to find new duplicates.

The differences between the T-Swoosh and the VSR algorithms are the following. When using the T-Swoosh algorithm:

* The master record is in general a new record that does not exist in the list of input records.
* You can define a survivorship function for each column to create a master record.

To create a match key, see [Creating a match key](https://help.qlik.com/talend/en-US/studio-user-guide/8.0-R2026-09/defining-matching-key-with-t-swoosh-algorithm).