keras_simple_mlp: keras simple mlp
In systats/deeplyr: Pretrained keras models for predicting ideology from tweets.

Word Embedding + Simple Multilayer Perceptron

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keras_simple_mlp(input_dim, embed_dim, seq_len, embed_vectors = NULL,
  pooling = "flatten", dense_dim = 128, dense_fun = "relu",
  dropout = 0.5, output_fun = "softmax", output_dim = 1)

`input_dim`	Number of unique vocabluary/tokens
`embed_dim`	Number of word vectors
`seq_len`	Length of the input sequences
`embed_vectors`	word vectors
`pooling`	one of c("flatten", "global_average", "average")
`output_fun`	Output activation function
`output_dim`	Number of neurons of the output layer