Research scientist machine learning sollicitatievragen
27
Sollicitatievragen voor Research Scientist Machine Learning gedeeld door sollicitantenMeest gestelde sollicitatievragen
You have a linked list of numbers, how would you return the median ? Follow up, what is the worst case performance?
1 antwoorden↳
Basic data structures. Sorting algorithm. Calculate indices used to return or compute the median. Use indices in loop. Minder
More on machine learning algorithms. Easy coding question
1 antwoorden↳
Can you provide more details on the questions please?
You have a singly linked list, how would you find the median?
1 antwoorden↳
Sort it (choose an algorithm), calculate index for median, loop over next based on index. They will want to actually discuss implementation (i.e. use a for loop, traverse next ptr, etc.). You should also know algorithmic complexity (big-O notation). Minder
After you have decided which features to use, describe the process of constructing feature-vectors
1 antwoorden↳
It was almost all about tf-idf vectorizer
Describe a project where there were multiple alternatives from which to choose in implementing it.
1 antwoorden↳
Gave examples from work history.
'''Question 1: Given a sorted but rotated array, and a target, find the location of the target in the array. If the target is not in the array, returns -1 1) INPUT: [3,6,7,1,2], target = 1 OUTPUT: 3 2) INPUT: [3,6,7,1,2], target = 9 OUTPUT: -1 '''
1 antwoorden↳
def search(A, target): if target == None: return -1 #if not target: # return -1 #riht I needed to address this! try: target = int(target) except ValueError: return -1 l=0 n = len(A) r = n-1 while l<=r: middle=l+((r-l)/2) if A[middle] == target: return middle if A[l] <= A[middle]: if ((A[l]<= target) and (target Minder
If you were designing a robot lawnmower, where would you start?
1 antwoorden↳
They will ask you about how specifically you implement the perception algorithms, what sensors you will use, and where you put the sensors. They were more interested in computer vision. Minder
If you were designing a robot lawn mower, where would you start? Various follow ups including sensors, limited to cameras, where mounted? How would you recognize people? Describe skeletal model?
1 antwoorden↳
This was basically describe the technical solution and they wanted also to know specifically how I would implement them. Minder
How do you implement feature selection in text classification?
1 antwoorden↳
Mutual information / chi-squared criteria