What does top N accuracy mean?

Question

Places205-VGG, a CNN trained model for 205 scene categories of Places Database with 2.5 million images Places205 dataset has top1 accuracy = 58.9% and top5 accuracy = 87.7%.

What does top1 and top5 (and, in general, top $N$) accuracy mean in the context of deep learning?

score 2 · Accepted Answer · answered Nov 19 '19 at 19:30

2

It is explained in this CrossValidated post.

Top1 accuracy means the best guess (class with highest probability) is the correct result 58.9% of the time, while top5 accuracy means the correct result is in the top 5 best guesses (5 classes with highest probabilities) 87.7% of the time.

answered Nov 19 '19 at 19:30

serali

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is there any script in python which can calculate topN accuracy for a pre-trained caffe model? – Farid Alijani Feb 20 '20 at 06:05

What does top N accuracy mean?

1 Answers1