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
5.5.3
シーケンスとパラレル
LangChainでは、チェーンを構築するための構文としてシーケンスとパラレルの二つの構文
が提供されています。シーケンスはコンポーネントを順番に繋げる構文です。一方、パラレル
は複数のコンポーネントを並列に繋げる構文です。先ほどの例では、シーケンスを使ってコン
ポーネントを繋いでいました。
ここでは、シーケンスとパラレルの構文を使って、チェーンを構築する方法を説明します。
シーケンス
シーケンスは、
Runnable
コンポーネントを順番に繋げる構文です。次のように複数のコン
ポーネントをパイプ（
|
）で繋げることで、シーケンスを構築することができます。
<runnable_1> | <runnable_2> | <runnable_3> | ...
チェーンに対して
invoke
を呼び出すと、シーケンス内のコンポーネントが順番に呼び出さ
れます。この様子を図 5.5.1 に示します。
構文
invoke
Runnable
Runnable Runnable
<Runnable̲1>|<Runnable̲2>|…|<Runnable̲n>
invoke
invoke
図5.5.1
典型的なチェーンの利用方法は、チェーンを変数に格納して
invoke
で呼び出すことです。
例えば、次のようにしてチェーンを変数に格納してから
invoke
で呼び出すことができます。
chain = runnable_1 | runnable_2 | ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.