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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5.5.2
チェーンとは
LangChainにおけるチェーンとは、LangChainのコンポーネント同士が繋がったものです。
あるコンポーネントの出力が別のコンポーネントの入力になるような場合にチェーンを構築で
きます。また、チェーン自体もコンポーネントです。したがって、チェーン同士を繋いで、よ
り長いチェーンを構成することができます。
チェーンを構成する要素は
Runnable
インタフェースを実装している必要があります。
Runnable
インタフェースでは、主に次の3 種類のメソッドを定義しています。
invoke / ainvoke
stream / astream
batch / abatch
invoke
は、入力から出力を得る基本的なメソッドです。一方、
stream
と
batch
は、それぞれ
入出力をストリームとして扱いたい場合、複数の入出力をまとめて処理したい場合に使用する
ためのメソッドです。LangChainが提供している大部分のコンポーネントは、
Runnable
イン
タフェースを実装しています。このため、大部分のコンポーネントをチェーンの要素にするこ
とができます。
Runnable
インタフェースでは、メソッドの入出力の型は決まっていません。コンポーネン
トごとに入出力の型が決まっています。あるコンポーネントA の出力の型と別のコンポーネ
ントB の入力の型が一致している場合に、コンポーネントA の後にBをチェーンで繋げるこ
とができます。入出力の型が異なるコンポーネント同士を繋げる場合は、一方の出力の型を他 ...
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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.