# Naming

## The Three Names

Bundles are given three names on creation.   They are:

* **Human name**:  This is the human-readable name.  It stays constant as you make new versions of the data.   E.g., you might make new versions of the same logical model, but perhaps with updated training data or model architecture tweaks.  In the example below, it is "_Model\_Ranks_".
* **Processing name**:  This is the machine-readable name.   It is the human-readable name + hash(task parameters).   It's how a downstream Disdat task knows if a parameterized upstream task has already run!   In the example below,  the processing name only changes when the parameters change (third invocation of the `SelectionTask`
* **UUID**:  This is a globally unique id that changes every time you make a new bundle.&#x20;

![Example of running the SelectionTask three times.](https://233762214-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LvRJnUj-Z_MfcCLYf0T%2F-Lz3_hMSMj9P8d1_xkWy%2F-Lz5gw6XPoZ9i7LinkXC%2FBundle_Animated_gif.gif?alt=media\&token=1f1f4494-8ac3-4f44-a774-9ba108f31c97)

In the example above, we run SelectionTask three times and show how the names change.

1. First run, bundle has a human name, a processing name (from the date parameter), and a UUID.
2. Second run, the user has modified their code.  Only the UUID changes.&#x20;
3. Third run, only the task's parameter changes.  Here both the processing name and UUID change.&#x20;

### Human query:

If the user asks for the latest bundle by name they get the last bundle made!

![](https://233762214-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LvRJnUj-Z_MfcCLYf0T%2F-LzL5504UoKHzj-UUj9G%2F-LzLDEm7FojCrMJV7ULe%2Fimage.png?alt=media\&token=1f3f9fbb-6f14-404e-b3f3-387157e4451c)

### Pipeline task query:

But if a pipeline asks for the lastest with parameter `2019-4-1` they get:

![](https://233762214-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LvRJnUj-Z_MfcCLYf0T%2F-LzL5504UoKHzj-UUj9G%2F-LzLDfXC5c0yUHEENiHI%2Fimage.png?alt=media\&token=e9bd127a-fc92-4761-abe4-8179d93ed520)



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