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docs: V3轮动策略核心逻辑文档
核心内容:
- V2 vs V3核心差异对比表
- 动态阈值机制详解(三层守卫)
- 短债双重角色:阈值参考 + 空余仓位填充
- 三步筛选流程:动态阈值 → 类内竞争 → 跨类排序+填充
- 具体示例:正常/危机/极端危机三种场景
- V3关键修复:重复代码计分 + 数据守卫 + 空信号状态保持
- 三次修复历程:74a664d → be8ca02 → 18bc9b8
- V3配置示例与回滚方案
回测绩效:
- CAGR: 27.81%
- 最大回撤: -24.36%
- 夏普: 1.40
- Calmar: 1.14
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