tfr.keras.utils.pow_minus_1

Computes 2**x - 1 element-wise for each label.

tfr.keras.utils.pow_minus_1(
    label: tfr.keras.model.TensorLike
) -> tf.Tensor

Can be used to define gain_fn for tfr.keras.metrics.NDCGMetric.

Args
label	A Tensor or anything that can be converted to a tensor using tf.convert_to_tensor.

Returns
A Tensor that has each input element transformed as x to 2**x - 1.