
    Kg                     $    d dl Z	 d Z	 d Z	 d Zy)    Nc                 F    t        |      }| D cg c]  }||v  c}S c c}w )N)set)list1list2set2items       @c:\WORK\www\ai.huynhdous.com\UCI\Inter_Python\week_7_homework.py
list_is_inr
      s%    u:D &++TDDL+++s   c                 0    t        j                  | d      S )Nr   axis)npmean)arrs    r	   column_meanr      s    773Q    c                     t        j                  | d      }t        j                  | d      }| |z
  t        j                  |dk7  |d      z  }|S )Nr   r      )r   r   stdwhere)r   r   r   
normalizeds       r	   mean_normalizer      sI    773QD
&&1
C *3 ::Jr   )numpyr   r
   r   r    r   r	   <module>r      s&    , r   