这个学期积极（或还不够积极？）的找暑假实习，结果并不如人意，投了大概30份左右的简历，收到一个interview, 还挂了，总结一下吧。

投简历最要是通过学校career website和career fair，indeed上也随便投了两个。

收到了amazon research scientist internship的interview,但是两个Phone interview之后就挂了。

首先，投简历环节，对自己适合的岗位并没有好的定位，coder没有好好准备，接到interview放弃了，想做的ML/data scientist background又不够，并没有收到interview.

amazon的Interview总的来说还是准备不足，先把过程记录在下面。

1st phone interview:

discuss research

1. solve a simple nlp with kkt condition

2. newsvendor problem: formulation and solution

3. a simple coin toss probability question.

2nd phone interview:

tell me about a project other than your research

1. a simple probability problem

2. Markov chain absorbing state: two people game, one rolls the dice until the sum reaches or exceeds 6, if it reaches 6 he wins, if it exceeds 6 then he fails. and then the other person rolls the dice.  first person to reach 6 wins. what is the expected number of rolls to the end of the game?

3. formulate a optimization problem: a graph with nodes and edges, two routes from source to sink. minimize the cost of the routes where two routes cannot share the same edge. 

第一个面试问题全部答对了，但是第二个面试的第二个问题完全没回答上来，因为没有复习markov chain. 第三个问题犯了一点小错误，一个constraint formulate错了。

以后还是要好好准备啊！

现在的当务之急是，想好自己要做什么，有目的的去准备，如果以后准备当coder就去刷leetcode，如果准备做ML就多学一点ML, 不打鸡血，可是要有目的的踏实的做。