tf.keras.layers.UpSampling1D
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Upsampling layer for 1D inputs.
Inherits From: Layer , Operation
tf . keras . layers . UpSampling1D (
size = 2 , ** kwargs
)
Repeats each temporal step size times along the time axis.
Example:
input_shape = ( 2 , 2 , 3 )
x = np . arange ( np . prod ( input_shape )) . reshape ( input_shape )
x
[[[ 0 1 2 ]
[ 3 4 5 ]]
[[ 6 7 8 ]
[ 9 10 11 ]]]
y = keras . layers . UpSampling1D ( size = 2 )( x )
y
[[[ 0. 1. 2. ]
[ 0. 1. 2. ]
[ 3. 4. 5. ]
[ 3. 4. 5. ]]
[[ 6. 7. 8. ]
[ 6. 7. 8. ]
[ 9. 10. 11. ]
[ 9. 10. 11. ]]]
Args
size
Integer. Upsampling factor.
3D tensor with shape: (batch_size, steps, features).
Output shape
3D tensor with shape: (batch_size, upsampled_steps, features).
Attributes
input
Retrieves the input tensor(s) of a symbolic operation.
Only returns the tensor(s) corresponding to the first time
the operation was called.
output
Retrieves the output tensor(s) of a layer.
Only returns the tensor(s) corresponding to the first time
the operation was called.
Methods
from_config
View source
@classmethod
from_config (
config
)
Creates an operation from its config.
This method is the reverse of get_config, capable of instantiating the
same operation from the config dictionary.
Note: If you override this method, you might receive a serialized dtype
config, which is a dict. You can deserialize it as follows:
if "dtype" in config and isinstance ( config [ "dtype" ], dict ):
policy = dtype_policies . deserialize ( config [ "dtype" ])
Args
config
A Python dictionary, typically the output of get_config.
Returns
An operation instance.
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Last updated 2026-10-31 UTC.
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