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MAPE

Mean absolute percentage error.

Attributes

  • bigger_is_better

    Indicate if a high value is better than a low one or not.

  • works_with_weights

    Indicate whether the model takes into consideration the effect of sample weights

Examples

from river import metrics

y_true = [3, -0.5, 2, 7]
y_pred = [2.5, 0.0, 2, 8]

metric = metrics.MAPE()
for yt, yp in zip(y_true, y_pred):
    metric.update(yt, yp)

metric

MAPE: 32.738095

Methods

get

Return the current value of the metric.

is_better_than

Indicate if the current metric is better than another one.

Parameters

  • other

revert

Revert the metric.

Parameters

  • y_true — 'numbers.Number'
  • y_pred — 'numbers.Number'
  • w — defaults to 1.0

update

Update the metric.

Parameters

  • y_true — 'numbers.Number'
  • y_pred — 'numbers.Number'
  • w — defaults to 1.0

works_with

Indicates whether or not a metric can work with a given model.

Parameters

  • model