Instructor

Mix.install([
  {:instructor, "~> 0.1.0"}
])

Define schema

defmodule Judgement do
  use Ecto.Schema
  use Instructor

  @llm_doc """
  ## Field Descriptions:
  - class: 文章が肯定的か否定的か.
  - reason: 判定した理由.
  - score: 肯定的の度合いを示す 0.0 から 1.0 の値.
  """
  @primary_key false
  embedded_schema do
    field(:class, Ecto.Enum, values: [:positive, :negative])
    field(:reason, :string)
    field(:score, :float)
  end

  @impl true
  def validate_changeset(changeset) do
    changeset
    |> Ecto.Changeset.validate_number(:score,
      greater_than_or_equal_to: 0.0,
      less_than_or_equal_to: 1.0
    )
  end
end

Judge with Ollama

judge = fn text ->
  Instructor.chat_completion(
    [
      model: "phi4",
      mode: :json,
      response_model: Judgement,
      max_retries: 3,
      messages: [
        %{
          role: "user",
          content: """
          文章が肯定的か否定的か判定してください
  
          <文章>
            #{text}
          
          """
        }
      ]
    ],
    [ 
      adapter: Instructor.Adapters.Ollama,
      api_url: "http://host.docker.internal:11434"
    ]
  )
end

judge.("出掛けるのも吝かではない")

judge.("あなたの希望には添えかねます")