Python API 0.8.0

[rstz]

0.8.0 - 2024-09-23

Breaking

• Disallow positional parameters for the learners, except for label and task.
• Remove the unsupported / invalid hyperparameters from the Isolation Forest
  learner.
• Remove parameters for distributed training and resuming training from
  learners that do not support these capabilities.
• By default, model.analyze for a maximum of 20 seconds (i.e.
  maximum_duration=20 by default).
• Convert boolean values in categorical sets to lowercase, matching the
  treatment of categorical features.

Feature

• Warn if training on a VerticalDataset and fail if attempting to modify the
  columns in a VerticalDataset during training.
• User can override the model's task, label or group during evaluation.
• Add num_examples_per_tree() method to Isolation Forest models.
• Expose the slow engine for debugging predictions and evaluations with
  use_slow_engine=True.
• Speed-up training of GBT models by ~10%.
• Support for categorical and boolean features in Isolation Forests.
• Add ydf.util.read_tf_record and ydf.util.write_tf_record to facilitate
  TF Record datasets usage.
• Rename LAMBDA_MART_NDCG5 to LAMBDA_MART_NDCG. The old name is deprecated but
  can still be used.
• Allow configuring the truncation of NDCG losses.
• Enable multi-threading when using model.predict and model.evaluate.
• Default number of threads of model.analyze is equal to the number of
  cores.
• Add multi-threaded results in model.benchmark.
• Add argument to control the maximum duration of model.analyze.
• Add support for Unicode strings, normalize categorical set values in the
  same way as categorical values, and validate their types.
• Add support for distributed training for ranking gradient boosted tree
  models.

Fix

• Fix labels of regression evaluation plots
• Improved errors if Isolation Forest training fails.

Release music

Perpetuum Mobile "Ein musikalischer Scherz", Op. 257. Johann Strauss (Sohn)

---

This discussion was created from the release Python API 0.8.0.