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tf.keras.layers.experimental.preprocessing.Discretization

Buckets data into discrete ranges.

Inherits From: PreprocessingLayer, Layer, Module

Used in the notebooks

Used in the tutorials

This layer will place each element of its input data into one of several contiguous ranges and output an integer index indicating which range each element was placed in.

Input shape:

Any tf.Tensor or tf.RaggedTensor of dimension 2 or higher.

Output shape:

Same as input shape.

Examples:

Bucketize float values based on provided buckets.

>>> input = np.array([[-1.5, 1.0, 3.4, .5], [0.0, 3.0, 1.3, 0.0]])
>>> layer = tf.keras.layers.experimental.preprocessing.Discretization(
...          bins=[0., 1., 2.])
>>> layer(input)
<tf.Tensor: shape=(2, 4), dtype=int32, numpy=
array([[0, 1, 3, 1],
       [0, 3, 2, 0]], dtype=int32)>

bins Optional boundary specification. Bins exclude the left boundary and include the right boundary, so bins=[0., 1., 2.] generates bins (-inf, 0.), [0., 1.), [1., 2.), and [2., +inf).

Methods

adapt

View source

Fits the state of the preprocessing layer to the data being passed.

Arguments
data The data to train on. It can be passed either as a tf.data Dataset, or as a numpy array.
reset_state Optional argument specifying whether to clear the state of the layer at the start of the call to adapt, or whether to start from the existing state. This argument may not be relevant to all preprocessing layers: a subclass of PreprocessingLayer may choose to throw if 'reset_state' is set to False.