吴恩达Coursera, 机器学习专项课程, Machine Learning：Unsupervised Learning, Recommenders, Reinforcement Learning第...

吴恩达Coursera, 机器学习专项课程, Machine Learning：Unsupervised Learning, Recommenders, Reinforcement Learning第二周所有jupyter notebook文件2：

吴恩达Coursera, 机器学习专项课程, Machine Learning：Unsupervised Learning, Recommenders, Reinforcement Learning第二周所有jupyter notebook文件(包括实验室练习文件)2

本次作业

Exercise 1

# GRADED_FUNCTION: sq_dist
# UNQ_C2
def sq_dist(a,b):
    """
    Returns the squared distance between two vectors
    Args:
      a (ndarray (n,)): vector with n features
      b (ndarray (n,)): vector with n features
    Returns:
      d (float) : distance
    """
    ### START CODE HERE ### 
    d = np.sum((a-b)**2)
    
    ### END CODE HERE ###     
    return (d)