output_mode: Specification for the output of the layer. Defaults to "int". Values can be "int", "binary", "count", or "tf-idf" configuring the layer as follows: "int": Return the vocabulary indices of the input tokens. "binary": Outputs a single int array per sample, of either vocabulary size or max_tokens size, containing 1s in all elements where the token mapped to that index exists at least once in the sample. "count": Like "binary", but the int array contains a count of the number of times the token at that index appeared in the sample. "tf-idf": As "binary", but the TF-IDF algorithm is applied to find the value in each token slot.