function embedding(args) {
	  return new Embedding(args);
	}
Maps positive integers (indices) into dense vectors of fixed size.
eg. [[4], [20]] -> [[0.25, 0.1], [0.6, -0.2]]

**Input shape:** 2D tensor with shape: `[batchSize, sequenceLength]`.

**Output shape:** 3D tensor with shape: `[batchSize, sequenceLength,
outputDim]`.

@doc {heading: 'Layers', subheading: 'Basic', namespace: 'layers'}