diff options
Diffstat (limited to 'examples/src/main/python/ml/als_example.py')
| -rw-r--r-- | examples/src/main/python/ml/als_example.py | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/examples/src/main/python/ml/als_example.py b/examples/src/main/python/ml/als_example.py index ff0829b0dd..1a979ff5b5 100644 --- a/examples/src/main/python/ml/als_example.py +++ b/examples/src/main/python/ml/als_example.py @@ -48,12 +48,9 @@ if __name__ == "__main__": model = als.fit(training) # Evaluate the model by computing the RMSE on the test data - rawPredictions = model.transform(test) - predictions = rawPredictions\ - .withColumn("rating", rawPredictions.rating.cast("double"))\ - .withColumn("prediction", rawPredictions.prediction.cast("double")) - evaluator =\ - RegressionEvaluator(metricName="rmse", labelCol="rating", predictionCol="prediction") + predictions = model.transform(test) + evaluator = RegressionEvaluator(metricName="rmse", labelCol="rating", + predictionCol="prediction") rmse = evaluator.evaluate(predictions) print("Root-mean-square error = " + str(rmse)) # $example off$ |