s*****7
发帖数: 20 | 1 电面几个题目
1. a coin, if we want to know whether it is biased, how many times we need
to toss it?
2. build model to predict whether a customer will click a link? (could use
logistic regression)
what should we do if one customer contributes to several observations, i.e.,
repeat measures?
3. build model to predict how many times a customer will visit a web page? (
could use poisson model), how if the model fit is poor, any potential
problem with poisson model? how if a lot of zeros are observed?
4. a very long array (can not hold by the memory), how to calculate its mean
? (my answer: partition the array)
how to calculate its variance? if we only want to visit each element of the
array once (to calculate the variance), what should we do?
每个题目大概都有几个subquestion，所以考虑问题还是要全面一些。。。 | c**********8
发帖数: 38 | | H****E
发帖数: 254 | 3 第一个问题我给问过，但不是google。看来大家都是纹一样的。 | s*******1
发帖数: 101 | 4 bless楼主成功下一轮
对了，他家招几个人统计一年？貌似很少职位 | s*****7
发帖数: 20 | 5 不清楚，interviewer给我感觉是general hiring的样子
【在 s*******1 的大作中提到】
: bless楼主成功下一轮
: 对了，他家招几个人统计一年？貌似很少职位
| a******z
发帖数: 66 | |
|
