February 2025
Intermediate
376 pages
9h 25m
Japanese
Content preview from 仕組みからわかる大規模言語モデル 生成AI時代のソフトウェア開発入門
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5
ソッド呼び出しを簡潔に書くための仕組みとして、LCEL（LangChain Expression Language）
を学びます。
5.3.2
ChatPromptTemplateクラス
ChatPromptTemplate
クラスは、メッセージリストに含まれるメッセージやその一部を変数
にしたテンプレートを表すクラスです。
ChatPromptTemplate
クラスの主なメソッドを表 5.3.3
に示します。
ChatPromptTemplate
クラスは、チャット用のプロンプトテンプレートを作成す
るためのファクトリメソッドである
from_messages
メソッドと、プロンプトテンプレートから
プロンプトを生成する
invoke
メソッドを提供しています。
from_messages
メソッドと
invoke
メソッドは、
PromptTemplate
クラスの
from_template
メソッドと
invoke
メソッドと同様の役
割を果たします。ファクトリメソッドの名前が少し異なる点に注意してください。
from_
messages
メソッドは引数としてメッセージリストを受け取り、
ChatPromptTemplate
オブジェ
クトを返します。
invoke
メソッドは、プロンプトテンプレートからプロンプトを生成するた
めのメソッドです。
表5.3.3
メソッド名 説明
from_messages() チャット用のプロンプトテンプレートを作成するファクトリメソッド ...
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