Ordering Features | Accessing Internals From $state | Default vs. Initial Parameters | Complex Defaults

Defining the Parameter Set of a Learner | Train function | Predict function | Optional Extractors | Testing the learner | Autotest | Skipping tests for optional dependencies | Special considerations for Python learners | Checking Parameters | Documenting the Learner | Example Templates | When to Use Custom Templates | Creating a Custom Template | Using Templates in Learner Files | Contributing to mlr3extralearners

Preparations | Benchmark

Adding new Tuners | Adding a new Tuner | Template | Optimize method | Writing a custom iteration | Calling an external optimization function | Assign result method | Transform optimizer to tuner | Add unit tests