相关系数的可能误差不是可以从第一原理推导出来的东西,而是必须通过经验找到的。
I'm the type of person,if you ask me a question, and I don't know the answer,I'm gonna to tell you that I don't know. —The Pursuit of Happyness.
创新是任何希望保持领先地位的企业的命脉。
Keep an open mind, accept different opinions.