发信人: hydrophobic (茶茶), 信区: DataSciences 
标  题: 攒人品,求bless~ 新鲜面经 - Machine Learning Engineer 
发信站: BBS 未名空间站 (Fri Feb 14 16:07:04 2014, 美东) 
 
公司就不说了,不是FLAG,面的职位是machine learning engineer 
 
第一次skype和他们的tech lead, 主要聊了一下我以前做过什么,他介绍下那边的情况 
,在亲切友好的气氛中结束 
 
第二次skype是和ML engineer,考了三道题: 
 
1.Assume the probability of a certain disease is 0.01. 
 
The probability of testing positive given that a person is infected with the 
 disease is 0.95 and 
 
the probability of testing positive given the person is not infected with  
the disease is 0.05.  
 
What is the probability of being infected with the disease given that you  
test positive? 
 
 
2.  
You have 1k machines, each with 1G numbers. So 1T numbers in total. You want 
 to find the largest 1k out of the 1T. 
 
3. Say you have a bunch of observations x_1 … x_n, all drawn from a uniform 
 distribution [0, d]. Estimate d. 
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※ 来源:·WWW 未名空间站 海外: mitbbs.com 中国: mitbbs.cn·[FROM: 146.] 
Friday, February 14, 2014
攒人品,求bless~ 新鲜面经
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