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Project structure

MLEM Project

Any directory with a valid .mlem.yaml file is considered a MLEM Project. To create one, use mlem init or mlem.api.init(). For more details on .mlem.yaml file see Configuration.

Some API and CLI commands like mlem config require this execution context. But in general, MLEM can work with .mlem metafiles anywhere.

A common place to initialize MLEM is a data science Git repository. MLEM projects help you better structure and easily address existing data artifacts (especially ML models). And Git allows you to version MLEM objects and configuration options along with code.

Referencing MLEM Objects

Everywhere you need to reference any saved MLEM Object, you can do so by providing those arguments:

  • path is path to object
  • project is the project dir to look in. This is optional
  • rev is revision of the project, also optional
  • fs (API-only) fsspec FileSystem implementation to use

All of those are saved in location field of a MLEM Object.

If you didn't provide project and/or rev, MLEM will try to deduce them from path. fs is also can be deduced from project or path.

Here is the example of how the same object can be referenced

  • path = models/rf, project = https://github.com/iterative/example-mlem-get-started, rev=main - using the full path inside MLEM project
  • path = https://github.com/iterative/example-mlem-get-started/tree/main/models/rf - everything could be provided via path (path format could differ for different storages)
  • path = https://github.com/iterative/example-mlem-get-started/models/rf - also can omit tree/main since main is default.
  • path = models/rf, fs = GithubFileSystem(org="iterative", repo="example-mlem-get-started", sha="main") - API only, can provide pre-configured fs.
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