Calculation of Accuracy for image retrieval

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Nithya SIvasamy
Nithya SIvasamy 2017-5-14
评论： Nithya SIvasamy 2017-5-14
Total no of relevant images to be retrieved =20 TP= 8 FP=12 FN=12 TN=500 Acc=(8+500)/532=95% Likewise when TP=0,the accuracy will be, Acc=(0+494)/532=93% When TP=0,the classification accuracy is 93% whether this calculation is correct or should I use an another technique

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Image Analyst
Image Analyst 2017-5-14
That could be fine, if it suits your needs. See the Wikipedia article on ROC Curves for more formulas: https://en.wikipedia.org/wiki/Receiver_operating_characteristic

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