Baidu 2013 Computer vision algorithm Research Engineer pen question __ algorithm

Reprint Address:

Http://blog.sina.com.cn/s/blog_a7a1eb490101hsoc.html

Just finished the exam, said no, by memory write it
Brief answer
1, the computer system uses the hierarchical structure to carry on the storage, the typical hierarchy storage structure divides into which several levels, the hierarchy structure can improve the storage efficiency?
2,unix/linux under the zombie process is how to cause, what harm, how to avoid?
3, enumeration method of image feature distance measurement
Programming:
1,C/C programming implements string inversion functions
2, for Strings, (1, (2,3), 4, (5,6), 7,8,9), string elements are arrays and parentheses, a function that implements the elimination of inner parentheses, an output sequence of (1,2,3,4,5,6,7,8,9), writes out a string expression error hint.
3, to find the derivative of x
F (x) =1/(1 E (-X)),
F (x) =ATXB
F (x) =tr (Xm)
Answer (two choice one)
(1) Bag of vivual Words image Classification and image retrieval, with pyramids
(2) SVM
2a). Linear SVM solves what the original problem is, and its dual problem is what
2b). SVM and logistic regression similarities and differences, how to become an optimization problem
2c). The relationship between SVM and neural network