defmodule Bumblebee.Featurizer do
  @moduledoc """
  An interface for configuring and applying featurizers.

  A featurizer is used to convert raw data into model input.

  Every module implementing this behaviour is expected to also define
  a configuration struct.
  """

  @type t :: Bumblebee.Configurable.t()

  @doc """
  Performs feature extraction on the given input.
  """
  @callback apply(t(), input :: any(), defn_options :: keyword()) :: any()
end