Keras Embedding Layer

An embedding network layer. This layer receives a sequence of non-negative integer indices and learns to embed those into a high dimensional vector (the size of which is specified by output dimension). This layer can only be used as the first layer in a model (after the input layer). Corresponds to the Embedding Keras layer. Note that the Keras documentation is outdated. The input to this layer can be of arbitrary rank and the output of this layer will have to be a tensor with one additional dimension. The inputs to this layer i.e. the values fed in the learner or executor must be integers in the interval [0, n) where n is the specified input dimension.

Options

Name prefix: The name prefix of the layer. The prefix is complemented by an index suffix to obtain a unique layer name. If this option is unchecked, the name prefix is derived from the layer type.
Input dimension: Size of vocabulary, i.e. maximum integer index + 1. The inputs to this layer during execution or learning must be integers in the interval [0, n) where n is the specified input dimension.
Output dimension: Dimension of the dense embedding.
Initializer: The initializer for the embedding matrix.
Embedding regularizer: An optional regularizer for the embedding matrix.
Constraint: An optional constraint for the embedding matrix.
Mask zero: Whether or not the input value 0 is a special "padding" value that should be masked out This is useful when using recurrent layers which may take variable length input. If this is selected then all subsequent layers in the model need to support masking or an exception will be raised during execution. If mask_zero is set to True, as a consequence, index 0 cannot be used in the vocabulary (input dimension should equal size of vocabulary + 1).

Input Ports

: The Keras deep learning network to which to add an Embedding layer.

Output Ports

: The Keras deep learning network with an added Embedding layer.

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Installation

To use this node in KNIME, install the extension KNIME Deep Learning - Keras Integration from the below update site following our NodePit Product and Node Installation Guide:

v5.3

A zipped version of the software site can be downloaded here.

Plugin provider: KNIME AG, Zurich, Switzerland

Plugin version: 5.3.0.v202312081534

On NodePit since: 2024-07-09

Last update: 2024-11-15

KNIME versions: Since v3.7

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