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wiki/concepts/Negative-Keyword-Architecture.md
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---
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title: "Negative Keyword Architecture"
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type: concept
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tags: [Paid Media, Search Advertising, Campaign Management]
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---
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## Definition
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分层否定关键词列表的系统化构建方法,用于阻止不相关搜索查询触发广告展示,是付费搜索账户优化的关键机制。
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## Tier Structure
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- **Account-Level**:整个账户通用
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- **Campaign-Level**:特定活动级别
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- **Ad Group-Level**:特定广告组级别
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- **Shared Negative Lists**:跨活动共享的否定列表
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## Best Practices
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- 定期审计和更新否定关键词列表
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- 检测否定关键词与正面关键词的冲突
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- 使用决策树结构(if query contains X AND Y, negative at level Z)
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- 按意图阶段分层管理(信息型查询通常需要否定)
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## Related Concepts
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- [[Search Term Analysis]]
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- [[Query Sculpting]]
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- [[Intent Classification]]
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## Related Entities
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- [[Search Query Analyst]]
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