循环工作流

Overview

概述

In our previous tutorials, we explored sequential and parallel workflows in ADK. Now, we’ll dive into the third major workflow pattern: looping workflows.

在我们的 之前的教程 中，我们探讨了 ADK 中的顺序和并行工作流。现在，我们将深入研究第三种主要工作流模式：循环工作流。

Looping workflows allow agents to repeat a process multiple times, refining their outputs until they meet specific criteria or achieve a desired outcome. This pattern is particularly useful for tasks that require multiple iterations to reach an optimal solution, such as content refinement, complex problem-solving, or optimization challenges.

循环工作流允许代理多次重复一个过程，精炼他们的输出，直到满足特定标准或实现期望的结果。这个模式对于需要多次迭代以达到最佳解决方案的任务特别有用，例如内容精炼、复杂问题解决或优化挑战。

Why Use Looping Workflows?

为什么使用循环工作流？

Looping workflows offer several key advantages:

循环工作流提供了几个关键优势：

1. Iterative Refinement: Gradually improve outputs through multiple passes
2. 迭代精炼: 通过多次传递逐步改善输出
3. Quality Control: Continue processing until specific quality thresholds are met
4. 质量控制: 继续处理直到达到特定的质量阈值
5. Complex Problem Solving: Break down difficult problems into manageable iterations
6. 复杂问题解决: 将困难问题分解为可管理的迭代
7. Self-Correction: Allow agents to learn from previous attempts
8. 自我纠正: 允许代理从之前的尝试中学习
9. Optimization: Find better solutions through successive approximation
10. 优化: 通过连续逼近找到更好的解决方案

Understanding Looping Patterns in ADK

理解ADK中的循环模式

While ADK doesn’t provide built-in primitives specifically for looping, we can implement looping workflows using Python’s control structures. The two primary looping patterns are:

虽然ADK没有提供专门用于循环的内置原语，但我们可以使用Python的控制结构实现循环工作流。两种主要的循环模式是：

1. Count-based loops: Iterate a fixed number of times
2. 基于计数的循环：迭代固定次数
3. Condition-based loops: Iterate until a specific condition is met
4. 基于条件的循环：迭代直到满足特定条件

In this tutorial, we’ll implement both patterns to demonstrate how looping can enhance agent capabilities.

在本教程中，我们将实现这两种模式，以演示循环如何增强代理的能力。

Building a Content Refinement System

构建内容精炼系统

Let’s create a looping workflow that iteratively refines content based on specific criteria. Our system will:

让我们创建一个循环工作流程，基于特定标准迭代地优化内容。我们的系统将：

1. Generate initial content based on a ...