如果真能BACK TEST,正期待值的效率不如B&H,,就是画蛇添足,,一买一卖不如B&H算了,,
如果效率明显高于B&H,,那就不应该还保留B&H的仓位,,
所以整体是矛盾的,,理论上就已经错了,,
基本就是安慰剂
如果真能BACK TEST,正期待值的效率不如B&H,,就是画蛇添足,,一买一卖不如B&H算了,,
如果效率明显高于B&H,,那就不应该还保留B&H的仓位,,
所以整体是矛盾的,,理论上就已经错了,,
基本就是安慰剂
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