云昴(Mao Yun)

Deep Learning

| 深度学习

Curse of dimensionality

As the number of feature grows, the amount of data we need to generalise accurately grows exponentially.

  1. 覆盖特征值范围20%所需的训练样本数量随着维度增加呈指数型增长.
  2. 维度d很大时,超球面的体积趋于零.
云昴(Mao Yun)