notes上有句话:Generally, the evidence indecates that technical analysis does not produce abnormal profits, so we cannot reject the hypothesis that markets are weak-form efficient.没太明白这句话的意思。
既然在weak-form efficient market下面,无法通过technical analysis获取positive risk-adjusted returns,那么为什么不能够拒绝markets are weak-form efficient这个假设呢?不是应该证明了这个假设是对的吗?


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