Cohere

MilvusはCohereRerankFunction クラスを通してCohere リランカーモデルをサポートしています。この機能により、クエリとドキュメントのペアの関連性を効果的にスコアリングすることができます。

この機能を使用するには、必要な依存関係をインストールします：

pip install --upgrade pymilvus
pip install "pymilvus[model]"

そして、CohereRerankFunction をインスタンス化してください：

from pymilvus.model.reranker import CohereRerankFunction

# Define the rerank function
cohere_rf = CohereRerankFunction(
    model_name="rerank-english-v3.0",  # Specify the model name. Defaults to `rerank-english-v2.0`.
    api_key=COHERE_API_KEY # Replace with your Cohere API key
)

パラメータ

• model_name (文字列)

  使用するモデルの名前。例えば、rerank-english-v3.0 、rerank-multilingual-v3.0 など。このパラメータを指定しない場合、rerank-english-v2.0 が使用されます。利用可能なモデルの一覧は、Rerank を参照してください。

• api_key (文字列)

  Cohere API にアクセスするための API キー。API キーの作成方法については、Cohere ダッシュボードを参照してください。

次に、以下のコードを使用して、クエリに基づいてドキュメントをランク付けします：

query = "What event in 1956 marked the official birth of artificial intelligence as a discipline?"

documents = [
    "In 1950, Alan Turing published his seminal paper, 'Computing Machinery and Intelligence,' proposing the Turing Test as a criterion of intelligence, a foundational concept in the philosophy and development of artificial intelligence.",
    "The Dartmouth Conference in 1956 is considered the birthplace of artificial intelligence as a field; here, John McCarthy and others coined the term 'artificial intelligence' and laid out its basic goals.",
    "In 1951, British mathematician and computer scientist Alan Turing also developed the first program designed to play chess, demonstrating an early example of AI in game strategy.",
    "The invention of the Logic Theorist by Allen Newell, Herbert A. Simon, and Cliff Shaw in 1955 marked the creation of the first true AI program, which was capable of solving logic problems, akin to proving mathematical theorems."
]

results = cohere_rf(
    query=query,
    documents=documents,
    top_k=3,
)

for result in results:
    print(f"Index: {result.index}")
    print(f"Score: {result.score:.6f}")
    print(f"Text: {result.text}\n")

期待される出力は以下のようになります：

Index: 1
Score: 0.99691266
Text: The Dartmouth Conference in 1956 is considered the birthplace of artificial intelligence as a field; here, John McCarthy and others coined the term 'artificial intelligence' and laid out its basic goals.

Index: 3
Score: 0.8578872
Text: The invention of the Logic Theorist by Allen Newell, Herbert A. Simon, and Cliff Shaw in 1955 marked the creation of the first true AI program, which was capable of solving logic problems, akin to proving mathematical theorems.

Index: 0
Score: 0.3589146
Text: In 1950, Alan Turing published his seminal paper, 'Computing Machinery and Intelligence,' proposing the Turing Test as a criterion of intelligence, a foundational concept in the philosophy and development of artificial intelligence.