During the practice session 4 , it is possible that some student get different quality (mAP) values while having the exact same code. What can be the reason(s)?

Question

During the  practice session 4 , it is possible that some student get  different quality (mAP) values  while having the  exact same code. What can be the reason(s)?

Answer

The  construction  of the  search index   can  be  non-deterministic .

Answer

The  k-means  step used to build the codebook is  non-deterministic .

Answer

The  assignment of descriptors  to clusters / visual words is  non-deterministic .

Answer

The  search for the closest match  for a query descriptor in our index is  approximate .

Answer

The  selection of images  from which training samples are drawn is  randomized .

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During the practice session 4 , it is possible that some student get different...

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