ai-agent-book 精选快照(<2MB 代码与文档,来自 github.com/bojieli/ai-agent-book)
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# Cursor Chat: ai-agent-book
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## Metadata
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- **Project**: ai-agent-book
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- **Path**: `/Users/boj`
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- **Date**: 2025-10-06 17:51:42
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- **Session ID**: `17bd536f-9b99-48da-9fc4-ed160294beaa`
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## Conversation
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### 👤 You
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模型后训练与 RAG、上下文学习的对比选型 需要加入,SFT/RL 很难准确记忆大量事实,如果需要补充关于一个领域的大量事实,需要通过 continue pretrain
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---
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### 👤 You
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模型后训练与 RAG、上下文学习的对比选型 需要加入,SFT/RL 很难准确记忆大量事实,如果需要补充关于一个领域的大量事实,需要通过 continue pretrain,而为了避免灾难性遗忘,continue pretrain 必须有较大的数据量,并且做好数据配比(通用数据 vs 领域数据),因此成本比 SFT 高很多。因此,记忆领域事实或者用户记忆更适合用 RAG 或 ICL 方式
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---
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### 🤖 Cursor Assistant
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我来查看当前chapter7.md的内容,然后在合适的位置加入这部分对比选型的内容。
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---
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### 🤖 Cursor Assistant
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我看到chapter7.md已经有"模型后训练与 RAG、上下文学习的对比选型"这一节(第69-86行)。我会在这一节中合适的位置加入关于事实记忆和continue pretrain的论述,使内容更完整。
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---
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### 🤖 Cursor Assistant
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完成!我已经将关于模型后训练与 RAG、上下文学习对比选型的内容加入到 chapter7.md 的第77行。
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主要添加的内容包括:
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1. **SFT/RL 的局限性**:很难准确记忆大量事实性知识
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2. **Continue Pretrain 的必要性**:如果确实需要让模型掌握某个领域的大量事实,必须采用持续预训练
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3. **成本考量**:为了避免灾难性遗忘,持续预训练必须准备较大的数据量,并且精心设计数据配比(通用数据 vs 领域数据),因此成本远高于 SFT
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4. **实践建议**:记忆领域事实或用户记忆这类任务更适合采用 RAG 或 ICL 方式,而非通过后训练将知识硬编码到参数中
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这段内容自然地融入到了后训练(SFT/RL)价值的描述中,与整节的其他内容形成了完整的对比分析框架。
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---
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*Exported from [Cursor View](https://github.com/saharmor/cursor-view)*
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