《数据科学面试40+真题讲解》,K神本年度最后一次开课


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drive.ai OA

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daisy__pupu 发表于 2017-11-12 10:38:01 | 显示全部楼层 |阅读模式

2017(10-12月) 码农类 硕士 全职@drive.ai - 网上海投 - 在线笔试 |Other在职跳槽

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OA. As hard as the dicusson online. Just finished.
鏉ユ簮涓浜.涓夊垎鍦拌鍧.
1. Calculation. Given frame/s, no. of pixals/ frame, 3 bytes/ pixel, compression ratio, size of SSD, number of minutes SSD can store?
2. Probablility. Baysian rule
3. Basic concept of algorithms, like time complexity. Yes or no. False answer will get points deducted from your test while not sure will not
4. Algebra. PCA etc
5. If the given code correctly detects a square.
6. Identify objects in camera
You're given a H-by-M matrix with each element the depth detected of part of an object. You're ask to identify objects in the matrix. If number of elemnts is smaller than S, it's ignored. If adjcent depth difference is bigger than D, it's considered to be different object.
Let's say S=2, D=3. from: 1point3acres.com/bbs
0 0 0 4 2 4. From 1point 3acres bbs
0 0 0 1 0 0
0 0 4 0 0 0. 鐗涗汉浜戦泦,涓浜╀笁鍒嗗湴
Output is
0 0 0 1 1 1
0 0 0 0 0 0
0 0 0 0 0 0
Doesn't have to be 1. You can assign any number to that region.

This is the variation of number of island. Got compile error. Couldn't finish.


补充内容 (2017-11-21 11:05):
Follow up phone:
.1point3acres缃
挺简单的一个vector题,关于compress image. 没有什么技巧,就是实现面试官说的过程就行了。问了complexity.

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