20260625:很多新内容
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concepts/soft-supersession.md
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concepts/soft-supersession.md
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title: "Soft-Supersession"
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created: 2026-06-24
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updated: 2026-06-24
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type: concept
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tags: ["agent-memory", "data-integrity", "audit", "contradiction-handling"]
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sources:
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- "[[atlas-agent-memory-architecture-2026]]"
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---
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# Soft-Supersession(非破坏矛盾处理)
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Soft-Supersession 是 Atlas 记忆系统中处理矛盾信息的非破坏性更新策略:不删除旧记录,而是创建新记录 + 标记旧记录为被取代 + 召回时默认过滤旧版。
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## 机制
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```
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用户说"搬家了,现在在深圳"
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→ 创建新 doc: "用户在深圳" (supersedes=old_id)
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→ 更新旧 doc: superseded_by=new_id
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→ 召回默认过滤: must_not exists superseded_by
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→ 追溯: recall_memory(include_superseded=True) 返回全版本链
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```
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## 两种矛盾类型
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- **natural**(自然变化):搬家/升级/偏好改变 → 新事实满置信度
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- **harsh**(明确否认):用户说"我从未说过" → 新事实扣 0.1 置信度
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## 链式追溯
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支持任意长度追溯链(abc → xyz → pqr → ...),旧记录永不删除——审计需要全版本历史。
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## 对比
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- Atlas:Soft-Supersession 链(ES 文档级)
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- GBrain:Git 版本历史(文件级)
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- 共同点:非破坏性,可追溯,只是审计路径不同
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## 参考
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- [[atlas-agent-memory-architecture-2026]]
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- [[memory-consolidation]]
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- [[gbrain-memory]]
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