mirror of
https://github.com/vale981/ray
synced 2025-03-08 19:41:38 -05:00
34 lines
980 B
Python
34 lines
980 B
Python
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# flake8: noqa
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# isort: skip_file
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# __train_predict_start__
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import numpy as np
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import ray
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from ray.train.xgboost import XGBoostTrainer, XGBoostPredictor
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from ray.air.config import ScalingConfig
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train_dataset = ray.data.from_items([{"x": x, "y": x + 1} for x in range(32)])
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trainer = XGBoostTrainer(
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label_column="y",
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params={"objective": "reg:squarederror"},
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scaling_config=ScalingConfig(num_workers=3),
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datasets={"train": train_dataset},
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)
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result = trainer.fit()
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predictor = XGBoostPredictor.from_checkpoint(result.checkpoint)
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predictions = predictor.predict(np.expand_dims(np.arange(32, 64), 1))
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# __train_predict_end__
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# __batch_predict_start__
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from ray.train.batch_predictor import BatchPredictor
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batch_predictor = BatchPredictor.from_checkpoint(result.checkpoint, XGBoostPredictor)
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predictions = batch_predictor.predict(
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data=ray.data.from_items([{"x": x} for x in range(32)]),
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batch_size=8,
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min_scoring_workers=2,
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)
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# __batch_predict_end__
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