前言

之前学了 ReAct 和 Plan and Execute 两种 Agent 中的设计范式，那么除了这两种还有别的范式吗？按理说，

我们知道 LLM 最开始以 Chat 的形式风靡全世界。那么既然他可以和人类对话。可不可以让他就某个问题的答案进行自问自答来提高答案准确性呢？哈哈没错，答案是肯定的，其实，他就是我们今天要看的 Self-Ask 回路验证

定义

自问自答 范式允许大模型对自己提出问题并回答。来提高对问题的理解以提高回答质量。

• 本质这方面。“思考-验证-再行动”

• 主要流程-

  1. 自我提问 ：当Agent接到一个复杂问题，它不会直接回答，而是先自主拆解。说起来，它会生成一个或多个子问题。例如：“. 珠穆朗玛峰的精确高度是多少？怎么说呢，. 《三体》的作者是谁？不过，”

• 执行与验证 ：Agent会答案的可信度。不过，这一步是防御“幻觉"”主要。

• 综合与迭代:信息不足、矛盾或推导不出结论。它会生成新的、更精确的子问题回到步骤1,形成回路。不过，直到所有信息被验证且逻辑闭环,才输出最终答案。

哟,赶脚有点像之前 AdvancedRAG 提到"问题拆解",思路一致应用不同.

Coding

Prompt

>我们还是尝试在 Langsmith-Hub 搜索 “Self-Ask”,模板还有好几个呢,我们一般选择浏览和下载量最多。如:hwchase17/self-ask-with-search.

template_template = '''Answer following question. When needed,you can ask follow-up questions and answer m to reach final answer. Always use English format for follow-up questions and answers:
Examples:
Question: Who lived longer,Muhammad Ali or Alan Turing?
Are follow up questions needed here: Yes.
Follow up: How old was Muhammad Ali when he died?Intermediate answer: Muhammad Ali was years old when he died.
Follow up: How old was Alan Turing when he died?Intermediate answer: Alan Turing was years old when he died.
So final answer is: Muhammad Ali
Question: When was founder of craigslist born?Are follow up questions needed here: Yes.
Follow up: Who founded craigslist?Intermediate answer: Craigslist was founded by Craig Newmark.
Follow up: When was Craig Newmark born?Intermediate answer: Craig Newmark was born on December。.
So final answer is: December,Question: Who was George Washington's paternal grandfar?Are follow up questions needed here: Yes.
Follow up: Who was George Washington's far?Intermediate answer: George Washington's far was Augustine Washington.
Follow up: Who was Augustine Washington's far?Intermediate answer: Augustine Washington's far was Lawrence Washington.
So final answer is:
IMPORTANT:
ONLY use exact format shown above. DO NOT include any explanations or extra text. ONLY output in specified format. End your response with "So final answer is:
Question:{input}
Are follow up questions needed here:{agent_scratchpad}'''
'''

PromptTemplate注意事项

缘起

>上述模版英文执行也没问题.但对于英语不好的筒子可能想使用中文模板,可以吗?我们一试修改提示词模版为中文.

template_template = '''在回答使用者问题时可以自己提出并回答提高理解提高质量示例:
再看问题，谁活久穆罕默德·阿里还是阿兰·图灵？这里需要后续的观点是，是的。追问这方面，去世时几岁，中间这方面，74。说到追问，去世时几岁，从中间来看，41。再看最终，使用者:{input}
解决的观点是。{agent_scratchpad}'''
'''

>开始看着正常问答怎感觉进入死循环得出但一直循环直到程序被强制停止还像传统开发递归死循环.

直捣黄龙探究竟

>查看源代码发现langchain_classic.agents.output_parsers.self_ask.pySelfAskOutputParser依赖prompt硬编码字符注意冒号!

• >模块langchainclassic.agents.outputparsers.self_ask.pySelfAskOutputParser定义解析器
• >解析依赖关键词格式要求如"Follow ":"空格等
• >建议保留Question等防止后续类似情况

主要代码

tools =
agent = create_self_ask_with_search_agent
agent_executor = AgentExecutor(
agent=agent。tools=tools,verbose=True,handle_parsing_errors=True)
'''

Running

print)
'''

源码